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Preprint ARTICLE | doi:10.20944/preprints201905.0364.v1

Laser-Plasma and Self-Absorption Measurements with Applications to Analysis of Atomic and Molecular Stellar Astrophysics Spectra

Christian Parigger, Christopher M Helstern, Ghaneshwar Gautam

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: atomic and molecular spectroscopy; time-resolved spectroscopy; laser plasma; laser-induced optical breakdown; stellar astrophysics spectra; white dwarf stars; hydrogen; carbon Swan spectra

Online: 30 May 2019 (08:53:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0115.v2

Science Pipelines for the Square Kilometre Array

Jamie Farnes, Ben Mort, Fred Dulwich, Stef Salvini, Wes Armour

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: radio astronomy; interferometry; square kilometre array; big data; faraday tomography

Online: 21 November 2018 (07:19:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints201905.0371.v1

Thermodynamic, non-extensive, or turbulent quasi equilibrium for space plasma environment

Peter Yoon

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: non-extensive entropic principle; plasma turbulence; quasi equilibrium

Online: 31 May 2019 (06:12:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201905.0351.v1

Effects of a Time Varying Moment on a Large Tethered Satellite in Circular or Elliptical Orbit

Narayan Iyer

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Time varying moment; tethered satellite; elliptical orbit; flight management

Online: 29 May 2019 (11:48:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0355.v1

The Energetics of the an ExB Propulsor That Avoids the Hidden Momentum Pitfall

Remi Cornwall

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: momenergy; static Poynting vector flow; zeropoint; ion propulsion

Online: 28 November 2019 (09:31:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints202001.0126.v2

Weak Deflection Angle by Casimir Wormhole Using Gauss-Bonnet Theorem and Its Shadow

Wajiha Javed, Ali Hamza, Ali Övgün

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: relativity and gravitation; wormhole; gravitational lensing; weak deflection angle; Gauss-Bonnet theorem; plasma medium; shadow

Online: 23 March 2020 (03:48:02 CET)

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Preprint ARTICLE | doi:10.20944/preprints202009.0452.v1

Theoretical Value of Hubble’s constant is a Salient Feature of Experimental Results- New Insight in to Origin of Universe

Siva Prasad Kodukula

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Hubble’s constant ‘H’; space time; velocity of light; parsec; expanding universe; Siva’s constant ‘K’

Online: 19 September 2020 (08:31:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0084.v1

Combining Faraday Tomography and Wavelet Analysis

Dmitry Sokoloff, Rainer Beck, Anton Chupin, Peter Frick, George Heald, Rodion Stepanov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: galactic magnetic field; RM-synthesis; Faraday depolarization; wavelet analysis

Online: 4 October 2018 (15:27:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201912.0370.v1

Lorentz Symmetry Group, Retardation, and Galactic Rotation Curves

Asher Yahalom

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: spacetime symmetry; Relativity of space-time; Lorentz Symmetry Group; retardation; Galactic Rotation Curves

Online: 29 December 2019 (04:57:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0407.v3

On the Eternal Role of Planck Scale in Machian Cosmology

Satya Seshavatharam U.V, S. Lakshminarayana

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Planck scale; Mach’s relation; quantum cosmology; critical density; ordinary matter; dark matter; thermal redshift; expansion velocity; rotational kinetic energy; dark energy; Hubble’s law

Online: 2 November 2018 (02:30:57 CET)

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With reference to Planck scale, Mach's relation and by introducing two new parameters Gamma and Beta, right from the beginning of Planck scale, we make an attempt to estimate ordinary matter density ratio, dark matter density ratio, mass, radius, temperature, age and expansion velocity (from and about the Planck mass in all directions). In analogy with currently believed cosmic acceleration, with a decreasing trend of total matter density ratio, cosmic expansion velocity can be shown to be increasing. By considering

H_{0} ≅ 70

km/sec/Mpc, estimated current cosmic mass, radius, total matter density, expansion velocity, temperature and age are:

4.3352 \times 10^{53} kg,

3.207 \times 10^{26} m,

3.138 \times 10^{- 27} kg {. m}^{- 3},

2.43 c,

2.721 K

and

19.78 Billion years

respectively. Point to be noted is that, with reference to Planck scale, cosmic temperature seems to be redshifted by a factor

{(Z_{T})}_{t} ≅ \sqrt{1 + \ln (H_{p l} / H_{t})} - 1

where

(H_{p l}, H_{t})

represent Planck scale and time dependent Hubble parameters respectively. As a peculiar case, considering the equality of current Hubble parameter and current angular velocity, current cosmic rotational kinetic energy can be estimated to be 0.667 times the current critical energy. It needs further study.

Preprint ARTICLE | doi:10.20944/preprints202202.0026.v1

Dark Energy is Dark Matter below Absolute Zero in Black Holes

Roumen Tsekov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Neutrino, Dark Matter, Dark Energy, Black Holes, Negative Temperature

Online: 2 February 2022 (09:35:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0208.v1

Verification of photometric parallaxes with Gaia DR2 data

Oleg Malkov, Sergey Karpov, Dana Kovaleva, Sergey Sichevsky, Dmitry Chulkov, Olga Dluzhnevskaya, Alexey Kniazev, Areg Mickaelian, Alexey Mironov, Jayant Murthy, Alexey Sytov, Gang Zhao, Aleksandr Zhukov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: parallax; photometry; interstellar extinction; surveys; Gaia

Online: 8 November 2018 (11:08:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202008.0274.v1

Intrinsic Nature of Dark Matter in the Galactic Halo

UGUR CAMCI

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: galaxies: modified gravity; dark matter; halos; flat rotation curves

Online: 12 August 2020 (08:05:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0056.v1

Strange Stars Models in the Color-Flavor Locked State

Manuel Malaver, Hamed Daei Kasmaei

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: color-flavor-locked phase; gravitational potential; adjustable parameter; anisotropy; strange matter

Online: 6 November 2019 (06:56:23 CET)

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Preprint ARTICLE | doi:10.20944/preprints202305.2246.v3

Rlc Electrical Modelling of Black Hole and Early Universe. Generalization of Boltzmann’s Constant in Curved Space-Time

Hector Gerardo Flores

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: RLC electrical model; RC electrical model; cosmology; astronomy; astrophysics; background radiation; Hubble’s law; Boltzmann´s constant; dark energy; dark matter; black hole; Big Bang; cosmic inflation; early universe; quantum gravity; CERN; LHC; Fermilab; general relativity; particle physics; condensed matter physics; M theory; super string theory; extra dimensions

Online: 8 August 2023 (13:53:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0357.v1

A Thermodynamic Approach towards Understanding the Dark Universe

Carlos A. Melendres

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: composition and expansion of the universe; thermodynamics; phase diagram; quantum space; spaceons; dark energy; dark matter; cosmological constant; cosmic fluid; quintessence

Online: 29 December 2018 (08:45:26 CET)

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We present a thermodynamic approach in modeling the evolution of the universe based on a theory that space consists of energy quanta and is the cosmic fluid component of the universe. It provides an insight on the nature of dark energy and dark matter, as well as a rationale for the accelerated expansion of the universe. The universe started from an atomic size volume of an ideal gas at very high temperature and pressure. Upon expansion and cooling, phase transitions occurred resulting in the formation of fundamental particles, and matter. These nucleate and grow into stars, galaxies, and clusters with the aid of gravity. From the cooling curve of the universe we constructed a thermodynamic phase diagram of cosmic composition, from which we obtained a correlation between dark energy and the energy of space. Using Friedmann’s equations, our model fits well the WMAP data on cosmic composition with an equation of state parameter, w = −0.7. The dominance of dark energy started at 7.25 × 10⁹ years, in good agreement with BOSS measurements. The expansion of space is attributed to Quintessence associated with a quantum space field. Dark Matter is identified as a plasma form of matter similar to that which existed during the photon epoch, prior to recombination. The thermodynamics of expansion of the universe was adiabatic and decelerating during the first 7 billion years after the Big Bang; it became non-adiabatic and accelerating thereafter. The latter maybe due to an influx of energy from a source outside the universe, if it is open. If it is closed, thermodynamics requires that the pressure of space be negative. Said pressure would cause the accelerated expansion of the universe in accordance with the theory of General Relativity, and the law of conservation of energy. We provide a mechanism to explain this. The acceleration should not be interpreted as due to a repulsive form of gravity. Our Quantum Space model fits well the behavior of the observable universe.

Preprint REVIEW | doi:10.20944/preprints202007.0200.v2

Light Speed Expansion and Rotation of a Very Dark Machian Universe Having Internal Acceleration

U.V.S. Seshavatharam, S. Lakshminarayana

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Planck scale; Machian universe; Speed of light; Galactic dark matter; Galactic visible mass; Galactic visible mass density; Cosmic anisotropy; Galactic internal acceleration; Cosmic graviton wavelength

Online: 12 July 2020 (14:20:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0105.v1

Weighing Cosmological Models with SNe Ia and GRB Redshift Data

Rajendra P. Gupta

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: galaxies; supernovae; GRB; distances and redshifts; cosmic microwave background radiation; distance scale; cosmology theory; cosmological constant; Hubble constant; general relativity; TMT

Online: 9 April 2019 (11:38:12 CEST)

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Many models have been proposed to explain the intergalactic redshift using different observational data and different criteria for the goodness-of-fit of a model to the data. The purpose of this paper is to examine several suggested models using the same supernovae Ia data and gamma-ray burst (GRB) data with the same goodness-of-fit criterion and weigh them against the standard

Λ

CDM model. We have used the redshift – distance modulus (

z - μ

) data for 580 supernovae Ia with

0.015 \leq z \leq 1.414

to determine the parameters for each model, and then use these model parameter to see how each model fits the sole SNe Ia data at

z = 1.914

and the GRB data up to

z = 8.1

. For the goodness-of-fit criterion, we have used the chi-square probability determined from the weighted least square sum through non-linear regression fit to the data relative to the values predicted by each model. We find that the standard ΛCDM model gives the highest chi-square probability in all cases albeit with a rather small margin over the next best model - the recently introduced nonadiabatic Einstein de Sitter model. We have made (

z - μ

) projections up to

z = 1096

for the best four models. The best two models differ in

μ

only by 0.328 at

z = 1096

, a tiny fraction of the measurement errors that are in the high redshift datasets.

Preprint REVIEW | doi:10.20944/preprints202109.0508.v2

How Fast Is the Distance between Earth and the Sun Changing in the Solar System?

Jim Henry, Mesut Yurukcu, George Nnanna

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Solar System; Earth; Sun; Expansion; Universe

Online: 12 October 2021 (14:27:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0253.v1

Total Electron Content Variation Over HALY (Al-Jouf), Saudi Arabia and Comparison with IRI-2012 and IRI-2016 Models

Sunil Sharma

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: GPS; IRI-2012; IRI-2016; Saudi Arabia

Online: 18 February 2020 (03:01:49 CET)

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Preprint REVIEW | doi:10.20944/preprints201811.0374.v2

Relativistic Jet Simulations of the Weibel Instability in the Slab Model to Cylindrical Jets with Helical Magnetic Fields

Ken-Ichi Nishikawa, Yosuke Mizuno, Jose l. Gomez, Ioana Dutan, Athina Meli, Jacek Niemiec, Oleh Kobzar, Martin Pohl, Helen Sol, Nicholas MacDonald, Dieter H. Hartmann

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: particle-in-cell simulations; relativistic jets; the Weibel instability; kink-like instability; mushroom instability; global jets; helical magnetic fields; recollimation shocks

Online: 25 December 2018 (09:01:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints201812.0002.v2

Reasons in favor of a Hubble-Lemaître-Slipher's (HLS) Law

Emilio Elizalde

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: universe expansion; cosmological distances; cosmological velocities; the concept of physical law

Online: 4 January 2019 (11:21:55 CET)

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Preprint ARTICLE | doi:10.20944/preprints202110.0275.v2

Cosmological Expansion Rate–Various Measurement Results and Interpretation

Volkmar Müller

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Cosmological expansion; Earth expansion; common expansion rates; recession velocity / relative velocity; examples

Online: 21 February 2023 (02:28:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints202005.0400.v1

What is the Real Shape of the Hubble Diagram, z = H₀*D or z+1= e^H0*t? Analysis of the SN1a Supernovae and Gamma Ray Burst Redshift/Magnitude Data including the High Redshift Range up to z = 8.1

Laszlo Marosi

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: galaxies; distances and redshift; high redshift; stars; Gamma ray bursts; individual; supernovae; individual; cosmology; distance scale; observations

Online: 24 May 2020 (19:07:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0113.v2

A Rough Calculation Relating the Extremely Small Cosmological Constant to the Extremely Large QFT Vacuum Energy Density

Remi Cornwall

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Cosmological constant, QFT vacuum, Perturbation expansion, Einstein tensor

Online: 14 January 2019 (12:23:21 CET)

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Working Paper ARTICLE

Cosmic Random Walks Underlying an Infinite-Genus Universe

Arturo Tozzi, Alexander Yurkin, James F. Peters

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: arithmetic figures, black hole, deterministic model, geometrization of physics, random walk

Online: 26 March 2019 (10:23:11 CET)

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Preprint REVIEW | doi:10.20944/preprints201811.0030.v1

Radio Galaxies - The TeV Challenge

Bindu Rani

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: active galactic nuclei; radio galaxies; gamma-rays; jets

Online: 2 November 2018 (07:07:11 CET)

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Preprint HYPOTHESIS | doi:10.20944/preprints202106.0421.v2

ANYONS - One Key to Unlock Gravitational-Electromagnetic Union, the Topological Universe, Space-time Travel, Future Computers, Dark Matter/Dark Energy

Rodney Bartlett

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Anyon, Gravitational-Electromagnetic Unification, Topological Universe, Intergalactic Travel, Future Computers, Dark Matter/Dark Energy

Online: 28 June 2021 (16:26:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202006.0239.v1

Non-Detection of Dark Matter Particles: A Case for Alternate Theories of Gravity

Arun Kenath, C Sivaram, Avijeet Prasad, Louise Rebecca

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: dark matter; dark energy; alternate theories of gravity; MOND; Hubble tension

Online: 19 June 2020 (10:57:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0637.v1

Untangling Cosmic Magnetic Fields: Faraday Tomography at MetreWavelengths with LOFAR

Shane O'Sullivan, Marcus Brüggen, Cameron Van Eck, Martin Hardcastle, Marijke Haverkorn, Timothy Shimwell, Cyril Tasse, Valentina Vacca, Cathy Horellou, George Heald

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: magnetic fields; Faraday tomography; large-scale structure; AGN; Milky Way

Online: 26 October 2018 (15:35:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0323.v6

The Morphology of the Active Galactic Nucleus and its Impact on Accretion Flows and Relativistic Jets

Mohammed Al-Fadhli

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Relativistic Jets; Conformal Space-time Background.

Online: 12 January 2023 (13:50:25 CET)

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The G2 gas cloud motion data and the scarcity of observations on the event horizon-scale distances have challenged the comprehensiveness of the central supermassive black hole model. In addition, the Planck Legacy 2018 release has preferred a positively curved early Universe with a confidence level higher than 99%. This study investigates the impact of the background curvature and its evolution over the conformal time on the formation and morphological evolution of central compact objects and the consequent effect on their host galaxies. The formation of a galaxy from the collapse of a supermassive gas cloud in the early Universe is modeled based on interaction field equations as a 4D relativistic cloud-world that flows and spins through a 4D conformal bulk of a primordial positive curvature considering the preference of the Planck release. Owing to the curved background, this scenario of galaxy formation reveals that the core of the galaxy undergoes a forced vortex formation with a central event horizon leading to opposite vortices (traversable wormholes) that spatially shrink while evolving in the conformal time. It indicates that the galaxy and its core are formed in the same process whereas the surrounding gas clouds form the spiral arms due to the frame-dragging induced by the fast-rotating core. It demonstrates that the accretion flow onto the central supermassive compact object only occurs at the central event horizon of the two opposite vortices while their other ends eject the relativistic jets. This can elucidate the relativistic jet formation and explain the G2 gas cloud motion if its orbit is around one of the vortices but at a distance from the central event horizon. The gravitational potential of the early curved bulk could contribute to galaxy formation while the present spatial flatness deprives the potential of bulk which could lead to galaxy quenching. The formation of a galaxy and its core simultaneously could explain the growth of the supermassive compact galaxy core to a mass of ~10⁹ M_⊙ at just 6% of the current Universe age.

Preprint HYPOTHESIS | doi:10.20944/preprints202009.0233.v1

Gravitational Waves Carry Information about the Infalling Matter out of Black Holes: a Resolution of the Black Hole Information Paradox

Xueyi Tian

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: black holes; information paradox; Hawking radiation; information loss; gravitational waves; entropy

Online: 10 September 2020 (10:04:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0337.v2

No Need for Dark-Matter, Dark-Energy or Inflation, Once Ordinary Matter is Properly Represented?

Yehonatan Knoll

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: dark matter; dark energy; inflation; scale covariance; foundations of general relativity

Online: 25 July 2018 (10:49:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202104.0184.v1

Stochastic Cosmology and the Vacuum Energy Parameter

Ervin Goldfain

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: FRW model; accelerated expansion; Vacuum Energy parameter; stochastic cosmology; Langevin equation

Online: 6 April 2021 (18:25:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202110.0082.v6

Information Theory of Gravity

Jeffrey Alloy Abanto

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: emergent gravity; MOND; modified newtonian gravity; dark matter

Online: 20 October 2023 (11:53:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0609.v1

PyAtomDB: Extending the AtomDB Atomic Database to Model New Plasma Processes and Uncertainties

Adam R. Foster, Keri Heuer

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: X-ray Spectroscopy; Atomic Data; Spectral Analysis; Error Analysis

Online: 25 July 2020 (15:29:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201909.0196.v3

Linearized Stability of Bardeen de-Sitter Thin-Shell Wormholes

Hassan Alshal

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Bardeen; black hole; de-Sitter; thin-shell; wormhole

Online: 7 October 2019 (12:35:21 CEST)

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Preprint ESSAY | doi:10.20944/preprints202005.0320.v1

Huge Filaments as Regions of Space-Time Deformation

Irina Rozgacheva

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmology; large scale structure; huge filaments; space-time deformation

Online: 20 May 2020 (06:52:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0550.v1

On the Jupiter's influence on the measurement of the gravitational constant

Zhi Cheng

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: gravitational constant; measurement of gravitational constant; Jupiter

Online: 25 August 2020 (11:34:46 CEST)

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Working Paper ARTICLE

Baryon Physics and Tight Coupling Approximation in Boltzmann Code

Masroor Chandhanapparambil Pookkillath, Shinji Mukohyama, Antonio De Felice

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmological perturbation theory

Online: 26 November 2019 (10:48:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints202010.0298.v1

Cosmic Ray Extremely Distributed Observatory

Piotr Homola, Dmitriy Beznosko, Gopal Bhatta, Łukasz Bibrzycki, Łukasz Bratek, Michalina Borczyńska, Nikolay M. Budnev, Dariusz Burakowski, David Edwin Alvarez-Castillo, Kevin Almeida Cheminant, Aleksander Ćwikła, Punsiri Dam-o, Niraj Dhital, Alan Duffy, Piotr Głownia, Krzysztof Gorzkiewicz, Dariusz Góra, Alok C. Gupta, Zuzana Hlávková, Martin Homola, Joanna Jałocha, Robert Kamiński, Michał Karbowiak, Marcin Kasztelan, Renata Kierepko, Marek Knap, Péter Kovács, Szymon Kuliński, Bartosz Łozowski, Marek Magryś, Mikhail V. Medvedev, Justyna Mędrala, Jerzy W. Mietelski, Justyna Miszczyk, Alona Mozgova, Antonio Napolitano, Vahab Nazari, Y. Jack Ng, Michał Niedźwiecki, Cristina Oancea, Bogusław Ogan, Gabriela Opiła, Krzysztof Oziomek, Maciej Pawlik, Marcin Piekarczyk, Bożena Poncyljusz, Jerzy Pryga, Matías Rosas, Krzysztof Rzecki, Jilberto Zamora-Saa, Katarzyna Smelcerz, Karel Smolek, Weronika Stanek, Jarosław Stasielak, Slawomir Stuglik, Jolanta Sulma, Oleksandr Sushchov, Manana Svanidze, Kyle Tam, Arman Tursunov, José-M. Vaquero, Tadeusz Wibig, Krzysztof W. Woźniak

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmic rays; cosmic ray ensembles; extensive air showers; large scale cosmic ray correlations; CREDO Collaboration

Online: 14 October 2020 (10:34:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0033.v1

Density Profiles of 51 Galaxies from Parameter-Free Inverse Models of their Measured Differential Rotation

Robert Criss, Anne Hofmeister

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: inverse models; rotation curves; galactic density; galactic mass; galactic luminosity; Newtonian gravitation; dark matter

Online: 3 February 2020 (15:27:49 CET)

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Preprint COMMUNICATION | doi:10.20944/preprints202110.0147.v1

Jeans Instability, Jeans Entropy and the Entropy Origin of Gravity

Edward Bormashenko

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: gravity; entropic force; Jeans instability; isothermal self-gravitating cloud.

Online: 8 October 2021 (16:42:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0436.v1

Did a Complex Carbon Cycle Operate in the Inner Solar System?

Joseph A. Nuth, Frank Ferguson, Hugh Hill, Natasha Johnson

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Carbon depletion; Solar Nebula; Surface Mediated Reactions; Planetesimal Accretion

Online: 19 July 2020 (20:34:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0147.v2

Modelling the Rising Tails of Galaxy Rotation Curves

Fan Zhang

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Dark matter; galaxies; gravitation; rotation curves; galaxy rotation period

Online: 29 January 2019 (09:24:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints201908.0091.v1

The Flatness Problem and the Varying Physical Constants

Rajendra P. Gupta

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: flatness problem; variable physical constants; inflation; cosmology theory; dark energy

Online: 7 August 2019 (09:55:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.2017.v1

RC Electrical Modelling of Black Hole. New Method to Calculate the Amount of Dark Matter and the Rotation Speed Curves in Galaxies

Hector Gerardo Flores, Maria Isabel Gonçalves de Souza

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: RLC electrical model; RC electrical model; cosmology; background radiation; Hubble’s law; Boltzmann´s constant; dark energy; dark matter; black hole; Big Bang and cosmic inflation.

Online: 29 September 2023 (13:28:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202107.0408.v1

Analysis of Tidal Accelerations in the Solar System and in Extrasolar Planetary Systems

Klaus Paschek, Arthur Roßmann, Michael Hausmann, Georg Hildenbrand

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: tidal forces, numeric simulation, acceleration vectors, multi-planetary system, extrasolar planets/planet systems

Online: 19 July 2021 (11:50:17 CEST)

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Working Paper ARTICLE

Subhorizon Linear Nash Perturbations with Joint Analysis of Cosmic Growth and Expansion with Constrains on H(z) and the Deceleration Parameter q(z)

Abraao Capistrano, Paola T. Z. Seidel, Hemerson R. Duarte

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: modified Friedman equations; modified gravity; dark energy

Online: 18 June 2020 (09:25:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0188.v1

Evolution of Primordial Dark Matter Planets in the Early Universe

Arun Kenath, Kiren O. V., Sivaram C

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: dark matter; DM planets; early universe

Online: 7 August 2020 (11:34:09 CEST)

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Working Paper ARTICLE

Constraints on $\sigma_8$ Degeneracies from Linear Nash-Greene Perturbations in Subhorizon Scale

Abraao Capistrano

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: modified Friedman equations; modified gravity; dark energy

Online: 19 June 2020 (08:38:18 CEST)

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Preprint HYPOTHESIS | doi:10.20944/preprints202105.0239.v2

Hypothesis of Quantum Gravity - Resulting from a Static, Topological Universe Resulting from the Positives and Negatives of the Steady State and Big Bang Theories

Rodney Bartlett

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Gravitation, Electromagnetic-gravitational union, Dark energy, Dark matter, Cosmology, Geometry, Topology

Online: 24 May 2021 (11:58:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202005.0233.v2

Supernova Plasma Effects on Extragalactic Light Fields

Paul Marko

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Supernova; Plasma; Gravitational Lens; Einstein Cross; Hubble Constant; Hubble Tension

Online: 24 May 2022 (13:24:51 CEST)

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Preprint REVIEW | doi:10.20944/preprints201811.0081.v1

Halo Concentrations and the Fundamental Plane of Galaxy Clusters

Yutaka Fujita, Stefano Ettori, Megan Donahue, Keiichi Umetsu, Elena Rasia, Massimo Meneghetti, Elinor Medezinski, Nobuhiro Okabe, Marc Postman

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: galaxies; clusters; general—cosmology; theory—darkmatter—large-scale structure of universe

Online: 5 November 2018 (03:43:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints201904.0064.v1

Varying Physical Constants, Astrometric Anomalies, Redshift and Hubble Units

Rajendra P. Gupta

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Astroparticle physics; astrometric anomaly; supernovae redshift; cosmology theory; variable physical constants; VSL

Online: 5 April 2019 (12:07:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201910.0375.v3

A Unified Electro-Gravity Theory to Model Spiral Galaxies without Dark Matter

Nirod K. Das

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Unified Electro-Gravity (UEG) Theory; Spiral Galaxy; Galaxy Cluster; Dark Matter; Modified Newtonian Dynamics (MOND)

Online: 20 July 2023 (10:50:24 CEST)

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Preprint HYPOTHESIS | doi:10.20944/preprints202105.0437.v1

The Topological Universe’s Topological Materials

Rodney Bartlett

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Binary digits, Mobius strips, Figure-8 Klein bottles, Dark matter, Dark energy, Topological insulators, Topological superconductors, Topological universe, Weyl fermion, Majorana fermion, Vector-tensor-scalar geometry, Higgs-like body/consciousness

Online: 19 May 2021 (08:23:47 CEST)

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Working Paper HYPOTHESIS

Hypothesis and Feasible Mechanism for Appearance of Post-Post-Fe Nuclei in Solar System

Elizabeth Pavlova-Tito, Vadim I. Pavlov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Hypothesis, Fission, Heavy Post-Post-Fe Elements, Solar System

Online: 23 July 2019 (11:17:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0713.v1

A Quantum Mechanical Relationship between Milgrom’s Acceleration Constant and the Bekenstein-Hawking Entropy Expression

Engel Roza

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Milgrom’s acceleration constant; Bekenstein-Hawking entropy; gravitational dipole; dark matter

Online: 30 October 2018 (08:34:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints202309.2086.v1

Photon Interactions in Gravity and Antigravity: Conservation, Dark Energy, and Redshift Effects

Soumendra Nath Thakur, Deep Bhattacharjee, Onwuka Frederick

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: photon; gravity; antigravity; dark energy; redshift

Online: 29 September 2023 (08:37:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0259.v1

Dark Matter in a Galaxy as Vacuum Polarization

Sergey L. Cherkas, Vladimir L. Kalashnikov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: vacuum energy; dark matter; vacuum polarization; active galaxy nuclei

Online: 19 May 2022 (09:28:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0052.v1

A Study of McVittie Spacetime in Stationary and Dynamical Regime

Indranath Bhattacharyya, Saibal Ray, Riju Nag, Samudra Sundar Nag

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Einstein equations; McVittie solution; black hole; dark energy; embedded spacetime

Online: 6 June 2022 (03:17:36 CEST)

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Working Paper ARTICLE

Information Energy Mimics Ʌ and CDM

Michael Paul Gough

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: dark energy; dark matter; ʌcdm model

Online: 28 February 2020 (13:28:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202006.0217.v1

Universality of Mass to Area Ratio: from Biological to Astronomical Structures

Arun Kenath

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Mass per area; biological structures; gravitational self-energy; dark energy

Online: 17 June 2020 (13:11:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0396.v1

Asymmetry in Galaxy Spin Directions -- Analysis of Data from DES and Comparison to Four Other Sky Surveys

Lior Shamir

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Galaxies; Large-scale structure of Universe; Cosmic anisotropy

Online: 26 July 2022 (08:08:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0239.v1

Fundamental Constants in Time from the Big-Bang

Heikki Sipilä, Ari Lehto

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Fine structure constant; period doubling; alpha; natural constants

Online: 11 July 2020 (10:23:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0727.v1

Is there a Depolarization Horizon?

A. S. Hill

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Techniques: radio polarization; ISM: turbulence; ISM: magnetic fields

Online: 30 October 2018 (14:31:00 CET)

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Working Paper ARTICLE

Features of Structure and Absorption in the Jet-launching Region of M87

Wei Zhao, Xiaoyu Hong, Tao An, Xiaofeng Li, Xiaopeng Cheng, Fang Wu

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: galaxies: individual (m87); galaxies: jets; galaxies: active; radio continuum: galaxies

Online: 1 October 2019 (16:01:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202112.0239.v1

The Mach's Principle and Large-scale Modification of Newtonian Gravitation as Alternative Approach to Cold Dark Matter and Dark Energy

Nelson Falcon

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Mach's Principle; Dark Matter; Dark Energy; gravity; graviton mass; FRW cosmology; Hubble-Lemaitre Law.

Online: 14 December 2021 (13:51:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0743.v1

MONG: An extension to Galaxy Clusters

Louise Rebecca, Arun Kenath, C Sivaram

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: dark matter; dark energy; modified Newtonian gravity; flat rotation curve; velocity-distance curve

Online: 30 December 2020 (07:52:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints202208.0046.v2

Solar Activity Cycles Recur Epidemic and Pandemic Viruses: Space Weather Alerts

Ramy Mawad, Hanafy M. Madbouly, Ehab M. B. Mahdy

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Space weather; Solar terrestrial connection; Climate change; Solar cycle; Environment; Epidemiology

Online: 12 January 2023 (02:36:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0039.v1

New Derivation of Redshift Distance without Using Power Expansions

Steffen Haase

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: relativistic astrophysics; theoretical and observational cosmology; redshift; Hubble parameter; quasar

Online: 2 December 2021 (12:54:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202303.0327.v1

Inference of Dynamic Geophysical Conditions and Probability of Advanced Life in Potentially Habitable Rocky Exo Planets

Varnana M. Kumar, Girish T. E., Eapen P. E., Thara N. Sathyan, Biju Longhinos, Sony K. S., Binoy J.

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: habitable planets; exo planets; advanced life; M stars; geophysical conditions

Online: 17 March 2023 (13:48:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202104.0663.v1

Everything Is A Circle: A New Universal Orbital Model

AslıPınar Tan

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Solar System, Planetary System, Planet, Satellite, Sun, Earth, Moon, Topology, Circle, Ellipse, Orbit, Trajectory, Orbital Mechanics

Online: 26 April 2021 (12:14:51 CEST)

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Based on measured astronomical position data of heavenly objects in the Solar System and other planetary systems, all bodies in space seem to move in some kind of elliptical motion with respect to each other. According to Kepler’s 1^st Law, “orbit of a planet with respect to the Sun is an ellipse, with the Sun at one of the two foci.” Orbit of the Moon with respect to Earth is also distinctly elliptical, but this ellipse has a varying eccentricity as the Moon comes closer to and goes farther away from the Earth in a harmonic style along a full cycle of this ellipse. In this paper, our research results are summarized, where it is first mathematically shown that the “distance between points around any two different circles in three dimensional space” is equivalent to the “distance of points around a vector ellipse to another fixed or moving point, as in two dimensional space”. What is done is equivalent to showing that bodies moving on two different circular orbits in space vector wise behave as if moving on an elliptical path with respect to each other, and virtually seeing each other as positioned at an instantaneously stationary point in space on their relative ecliptic plane, whether they are moving with the same angular velocity, or different but fixed angular velocities, or even with different and changing angular velocities with respect to their own centers of revolution. This mathematical revelation has the potential to lead to far reaching discoveries in physics, enabling more insight into forces of nature, with a formulation of a new fundamental model regarding the motions of bodies in the Universe, including the Sun, Planets, and Satellites in the Solar System and elsewhere, as well as at particle and subatomic level. Based on the demonstrated mathematical analysis, as they exhibit almost fixed elliptic orbits relative to one another over time, the assertion is made that the Sun, the Earth, and the Moon must each be revolving in their individual circular orbits of revolution in space. With this expectation, individual orbital parameters of the Sun, the Earth, and the Moon are calculated based on observed Earth to Sun and Earth to Moon distance data, also using analytical methods developed as part of this research to an approximation. This calculation and analysis process have revealed additional results aligned with observation, and this also supports our assertion that the Sun, the Earth, and the Moon must actually be revolving in individual circular orbits.

Preprint REVIEW | doi:10.20944/preprints202109.0519.v1

Review on Dark Matter Searches with Neutrino Telescopes

Juan de Dios Zornoza

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: dark matter; neutrino telescopes; icecube; antares; km3net; superk

Online: 30 September 2021 (14:15:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202110.0330.v1

First Observations of SN 1604 (Kepler's Supernova)

Alessandro De Angelis, selenia broccio

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Supernova remnants; Stellar evolution; High-energy astrophysics

Online: 22 October 2021 (12:11:22 CEST)

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Preprint REVIEW | doi:10.20944/preprints202104.0156.v2

White Hole Cosmology - One Best Alternative for Standard Cosmology

U V Satya Seshavatharam, S Lakshminarayana

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: new definition of cosmic red shift; Planck mass; quantum model of cosmology; light speed expansion; galactic dark matter; flat rotation speed; cosmic rotation; galactic acceleration

Online: 12 July 2021 (13:48:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202101.0146.v1

Hamiltonian Formalism of Bianchi Type I Model for Fluid Bulk and Shearing Viscosity

Shouvik Sadhukhan, Alokananda Kar

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: General theory of relativity; Bianchi type 1; Hamiltonian formalism; bulk viscosity; cosmology; Fluid dynamics; Isotropic and Anisotropic cosmology; shearing viscosity

Online: 8 January 2021 (11:21:41 CET)

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Preprint ARTICLE | doi:10.20944/preprints202207.0134.v1

Effect of Various Parameter on Perihelion Shift and Deflection Angle in Reissner-Nordstrom Spacetime

Surajit Mandal

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: perihelion shift; bending of light; Reissner-Nordstrom Black Hole

Online: 8 July 2022 (06:44:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0142.v1

Effect of Non-Linear Electrodynamics on Weak Field Deflection Angle by Black Hole

Wajiha Javed, Ali Hamza, Ali Övgün

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: weak gravitational lensing; asymptotically flat black hole; deflection angle; non-linear electrodynamics; Gauss-Bonnet theorem

Online: 13 November 2019 (06:41:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints202110.0388.v1

Different Explanations for the Cosmic Microwave Background Radiation

Ting-Hang Pei

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmic microwave background; cosmic infrared background; cosmic background detector; Planck Surveyor; Baryon Oscillation Spectroscopic Survey

Online: 26 October 2021 (13:53:29 CEST)

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Working Paper REVIEW

Lorentz Invariance Violation Tests in Astroparticle Physics

Humberto Martínez-Huerta, Rodrigo Guedes Lang, Vitor de Souza

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Gamma rays; UHECR; Lorentz invariance violation

Online: 15 May 2020 (15:25:49 CEST)

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Working Paper ARTICLE

A Resolution of the Trans-Planckian Problem in the R_h=ct Universe

Fulvio Melia

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Cosmology; Early Universe; Quantum Fluctuations

Online: 12 February 2020 (12:30:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints201907.0133.v1

A Theory of Inertia Based on Mach's Principle

Volkmar Putz

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: inertia; Mach's principle; history of physics

Online: 9 July 2019 (14:21:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0512.v1

Weak Deflection Angle of Black-bounce Traversable Wormholes Using Gauss-Bonnet Theorem in the Dark Matter Medium

Ali Övgün

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: relativity and gravitation; gravitational lensing; deflection angle; wormholes; Gauss-Bonnet theorem

Online: 24 August 2020 (08:14:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202102.0052.v2

Information Dark Energy can resolve Hubble tension and is falsifiable by experiment.

Michael Paul Gough

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Dark Energy; LambdaCDM; Cosmological Constant; Hubble Tension

Online: 7 February 2022 (16:10:09 CET)

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Working Paper REVIEW

Photon-photon Interactions and the Opacity of the Universe in Gamma-Rays

Alberto Franceschini

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: High energy astrophysics; Background radiation; Photon-photon interaction; Pair production

Online: 30 March 2021 (13:10:22 CEST)

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Working Paper ARTICLE

Study of Periodic Signals from Blazars

Gopal Bhatta

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: supermassive black holes: non-thermal radiation; active galactic nuclei: BL Lacertae objects; galaxies: jets; method: time series analysis

Online: 4 December 2019 (04:32:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0741.v2

A New Cosmological Model Based on Quantization of the Zero-point Field

Biswaranjan Dikshit

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Cosmological constant problem; Cosmic coincidence problem; Energy conservation; Dark energy; Flatness problem; Horizon problem; Multiverse

Online: 20 September 2021 (15:14:45 CEST)

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Working Paper ARTICLE

The Advance of Planets' Perihelion Between Newton and Einstein

Christian Corda

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: General relativity; Newtonian gravity; advance of planets' perihelion; time dilation

Online: 5 January 2021 (11:08:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints202011.0581.v1

The Quantum Mechanism of AGNs’ Jets

Amrit Šorli, Štefan Čelan

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: space-time singularities; energy density of quantum vacuum; AGN; jets

Online: 23 November 2020 (11:15:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0560.v1

New Evidence of the Azimuthal Alignment of Quasars Spin Vector in the LQG U1.28, U1.27, U1.11, Cosmologically Explained

Reinoud Jan Slagter

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: quasar groups; alignment spin vectors; host galaxy; cosmic strings; symmetry breaking; scalar gauge field

Online: 23 March 2021 (09:54:21 CET)

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Preprint REVIEW | doi:10.20944/preprints202110.0025.v1

Multimessenger Astronomy with Neutrinos

Francisco Salesa Greus, Agustín Sánchez Losa

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: multimessenger astronomy; astroparticle physics; neutrinos

Online: 1 October 2021 (14:43:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0193.v1

Holographic Dendrogramic Theory: Predictability of Relational Dynamics of the Event Universe and the Emergence of Time Arrow

Oded Shor, Felix Benninger, Andrei Khrennikov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: event-universe; dendrograms; hierarchic relational representation; dendrogramic dynamics; shape dynamics; stability of event-universe; arrow of time

Online: 21 April 2022 (07:56:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0140.v1

Hubble Expansion as an Einstein Curvature

John Herbert Marr

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmology; theory; cosmology; observations; Hubble flow; dark energy; dark matter

Online: 8 September 2021 (11:08:46 CEST)

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Working Paper ARTICLE

Cold Dark Matter: A Gluonic Bose-Einstein Condensate in Anti-de Sitter Space Time

Gilles Cohen-Tannoudji, Jean-Pierre Gazeau

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmological constant; dark matter; dark energy; de Sitter; Anti de Sitter; quark gluon plasma; gluon Bose Einstein condensate

Online: 27 September 2021 (11:54:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202108.0538.v1

Can Hubble Tension Be Eased by Invoking a Finite Range for Gravity?

Louise Rebecca, Arun Kenath, C Sivaram

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Hubble constant; Hubble tension; early Universe; modified gravity; finite gravity

Online: 30 August 2021 (10:25:23 CEST)

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Preprint SHORT NOTE | doi:10.20944/preprints202301.0337.v1

The Mass of Our Observable Universe

Enrique Gaztanaga

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Cosmology; Dark Energy; General Relativity; Black Holes

Online: 18 January 2023 (10:32:09 CET)

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Preprint REVIEW | doi:10.20944/preprints202201.0459.v2

How the Big Bang End Up Inside a Black Hole

Enrique Gaztanaga

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Cosmology; Dark Energy; General Relativity; Black Holes; neutron stars

Online: 8 February 2022 (13:30:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints202203.0280.v1

Galaxies in Timeline Order

Sándor Buglyó

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Dark matter; dark energy; galaxy evolution; gamma rays

Online: 21 March 2022 (09:06:08 CET)

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