Search | Preprints.org

Preprint ARTICLE | doi:10.20944/preprints202209.0070.v1

Density and Velocity Analysis of the Planetary Nebula NGC 6853

Robert Hrubý

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Nebula; NGC 6853; Stellar; Planetary nebula; Deep space; remnant

Online: 5 September 2022 (14:08:07 CEST)

Show abstract| Download PDF| Share

Preprint BRIEF REPORT | doi:10.20944/preprints202208.0464.v2

SMBH Relativistic Gravity and Dark Matter

Štefan Čelan, Amrit Sorli, Niko Gorjup

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: kinetic energy of rotating SMBH; gravity; dark matter

Online: 29 August 2022 (15:42:06 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202208.0173.v1

Weak Interaction Dependent Super Gravity of Galactic Baryon Mass

Satya Seshavatharam U.V, S Lakshminarayana

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Dark matter; Weak interaction; Super gravity of baryonic matter; flat rotation speed; Hubble mass; Hubble radius

Online: 9 August 2022 (04:58:06 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202208.0164.v1

Was Cosmic Inflation Driven by Quantum Field or Its Product ?

Biping Gong

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: magnetic monopole; inflation, scalar field; Grand Unification theories

Online: 9 August 2022 (03:14:03 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202208.0136.v1

Nonsingular phantom cosmology in Five Dimensional f(R,T) Gravity

Rakesh Ranjan Sahoo, Kamal Lochan Mahanta, Saibal Ray

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Phantom energy; LRS Bianchi type-I; $f(R,T)$ theory; $5d$ spacetimes

Online: 8 August 2022 (08:11:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202208.0085.v2

The Inner and Backside Solar Flares

Ramy Mawad

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: The Sun; Solar Flare; Solar Core; Solar Interior layers; Radiative Zone; Convection Zone

Online: 5 August 2022 (14:59:45 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0390.v1

Weak Gravitational Lensing in Dark Matter and Plasma Mediums for Wormhole-like Static Aether Solution

Wajiha Javed, Sibgha Riaz, Reggie C. Pantig, Ali Övgün

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: general relativity; gravitational lensing; wormhole-like static aether solution; Gauss-Bonnet theorem; plasma and non-plasma mediums; dark matter; modified gravity

Online: 26 July 2022 (06:12:06 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0343.v1

Trajectory of Massive Particles around a Static Black Hole in f(R) Gravity

Surajit Mandal

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Massive particle; Static black hole; f(R) gravity; Pseudo-Newtonian Potential

Online: 22 July 2022 (14:14:20 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202202.0311.v3

The Stochastic Gravitational-Wave Background Exists Permanently and Has Time-Domain Asymmetry

Andrey Kramarenko, Alexander Kramarenko

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Gravitational background; Gravitational waves; correlation analysis; digital filters

Online: 19 July 2022 (10:33:36 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0273.v1

Identification of Source of Energy for Creation of Universe and Prediction of Minimum Possible Length by New Cosmological Model

Biswaranjan Dikshit

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Law of conservation of Energy; Minimum length; Planck length; Dark energy

Online: 19 July 2022 (02:38:37 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0266.v2

Before the Big Bang: the Apollonian Universe

Enrique Gaztanaga

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmology; dark energy; general relativity; black holes

Online: 14 July 2022 (03:50:34 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0194.v1

AdS Black Holes in the Framework of Nonlinear Electrodynamics, Thermodynamics and Joule–Thomson Expansion

Sergey I. Kruglov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: black holes; thermodynamics; extended phase space; nonlinear electrodynamics; Joule--Thomson expansion

Online: 13 July 2022 (09:06:03 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202206.0375.v1

Dark Energy from Virtual Gravitons (GCDM Model vs ΛCDM Model)

Leonid Marochnik, Daniel Usikov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: dark energy; virtual gravitons; supernova observations

Online: 28 June 2022 (04:22:26 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0262.v1

The Dark Energy Sector of Generalised Proper Time

David Jackson

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Dark energy; dark matter; Standard Model; unification; proper time; extra dimensions

Online: 19 May 2022 (13:38:48 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0192.v1

Interpretation of Time-Varying Radio Emissions of SgrＡ* Observed by 1.3 Millimeter-Wavelength VLBI ---with Parameters of The Super-Massive Black Hole Binary at SgrＡ* Based on Decameter Radio Wave Pulse Observations

Hiroshi Oya

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: galaxy center; supermassive black hole; black hole binary; VLBI; submillimeter radio wave; decameter radio wave; event horizon

Online: 13 May 2022 (11:01:08 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202204.0305.v1

Local Dynamical Effects of Scale Invariance: the Lunar Recession

Andre Maeder, Vesselin Gueorguiev

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmology; dark energy; Earth-Moon system; PACS: 98.80.-k; 96.25.De; 96.90.+c

Online: 29 April 2022 (13:11:42 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202204.0249.v1

The Effect of Elemental Abundances on Fitting Supernova Remnant Models to Data

Denis Alan Leahy

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: supernova remnants; supernova energetics; interstellar medium density

Online: 27 April 2022 (05:17:30 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202204.0197.v2

The Primordial Particle Accelerator of the Cosmos

Asher Yahalom

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: General Relativity; Euclidian Metric; Superluminality; Cosmological Inflation

Online: 26 April 2022 (09:53:07 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202204.0019.v1

A Quantum Space Model of Cosmic Evolution: Dark Energy and the Fate of the Universe

Carlos Melendres

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Quantum Space; spaceons; cosmic evolution; Friedmann equation; cyclic eternal universe; gravitational force; space force

Online: 4 April 2022 (14:39:11 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202203.0061.v1

A Beacon in the Galaxy: Updated Arecibo Message for Potential FAST and SETI Projects

Jonathan H. Jiang, Hanjie Li, Matthew Chong, Qitian Jin, Philip E. Rosen, Xiaoming Jiang, Kristen A. Fahy, Stuart F. Taylor, Zhihui Kong, Jamilah Hah, Zonghong Zhu

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Galaxy; Interstellar; Radio Message; Civilization; Earth; Binary; Radio Telescope

Online: 3 March 2022 (10:24:20 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202202.0229.v1

The Scale Invariant Vacuum Paradigm: Main Results and Current Progress

Vesselin Gueorguiev, Andre Maeder

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmology: theory - dark matter - dark energy - inflation; galaxies: formation - rotation; Weyl Integrable Geometry; Dirac co-calculus

Online: 18 February 2022 (09:22:34 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202201.0347.v1

Statistical Tools for Imaging Atmospheric Cherenkov Telescopes

Giacomo D’Amico

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Statistical analysis; gamma-rays; IACTs; likelihood; Bayes.

Online: 24 January 2022 (11:30:19 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202201.0238.v1

New Derivation of Redshift Distance Without Using Power Expansions. II. Additional Redshift Distances, Analyzing the Data of More Quasars, of Some SNIa, of the One Black Hole in Galaxy M87 as Well as a Newer Estimation of H₀

Steffen Haase

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: relativistic astrophysics; theoretical and observational cosmology; redshift; Hubble parameter; quasar; black hole; SNIa; galaxy; M87

Online: 17 January 2022 (15:28:25 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202201.0237.v1

Graviton Detection

Valeriy Kizka

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: gravitational redshift; gravitational waves; graviton

Online: 17 January 2022 (15:25:11 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202201.0203.v1

Occams Razor-No Dark Matter in Galactic Halos

Holger Döring

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Dark matter; no dark matter; halo-curves; gravity-forces; galactic core; third Kepler-law; centripetal force; stellar halo- velocity

Online: 14 January 2022 (11:20:04 CET)

Show abstract| Download PDF| Share

Preprint HYPOTHESIS | doi:10.20944/preprints202109.0200.v2

An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System

Michal Křížek, Vesselin G. Gueorguiev, André Maeder

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: local Hubble expansion; Solar system; Titan; laws of conservation of energy and angular momentum

Online: 13 January 2022 (12:58:55 CET)

Show abstract| Download PDF| Share

Preprint CONCEPT PAPER | doi:10.20944/preprints202201.0168.v1

Dark Matter - Are They Insulators to Electromagnetic Radiation?

Sayan Bag, Arijit Bag

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Dark matter; Bose-Einstein Condensation; Electromagnetic insulator

Online: 12 January 2022 (13:45:21 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202201.0106.v1

HU - The Big Pop Cosmogenesis Equation of State

Marco Pereira

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Cosmology, Cosmogenesis, Relativity, Spacetime, Hypergeometrical Universe Theory, Dark Matter, Dark Energy, L-CDM, Big Bang, Big Pop

Online: 10 January 2022 (12:14:01 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202109.0379.v9

Gravitational Fields and Gravitational Waves

Tony Yuan

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: law of gravitation; Doppler eﬀect; gravitational wave; gravitational ﬁeld; LIGO; gravitational constant; precession of the planets

Online: 4 January 2022 (11:10:13 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202012.0703.v2

On the Fundamental Particles and Reactions of Nature

Jian-Bin Bao, Nicholas P. Bao

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: aether; hypoatom; neutrino; inflation; gravity; negative pressure; dark energy; dark matter; black hole; quantum mechanics; matter-antimatter asymmetry; baryogenesis-through-leptogenesis; fabric of space; center of the universe; fate of the universe; general theory of relativity

Online: 23 December 2021 (15:15:13 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202112.0165.v1

One-Point Statistics Matter in Extended Cosmologies

Alex Gough, Cora Uhlemann

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: cosmology; theory; large scale structure of the Universe; analytical methods

Online: 10 December 2021 (07:31:46 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202103.0575.v3

Black Holes or an Objects without Event Horizon?

Leonid Verozub

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: alternative theory of gravitation; astrophysics; black Holes

Online: 9 December 2021 (15:49:47 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202110.0452.v2

Covariant Space-Time Line Elements in the Friedmann-Lemaitre-Robertson-Walker Geometry

David Escors, Grazyna Kochan

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Lorentz invariance violation; FRW metric; general relativity; quantum mechanics; uncertainty principle; quantum gravity

Online: 7 December 2021 (11:37:55 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202111.0318.v1

Effective Potentials and Orbits in Weyl Conformastatic Slender Disk

Abraao Capistrano, Monica C. Kalb, Carlos H. Coimbra-Araújo

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Nearly newtonian limit; gravitation; stars; clusters

Online: 18 November 2021 (08:07:10 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202106.0521.v2

The Epoch of Reionization in Warm Dark Matter Scenarios

M. Romanello, N. Menci, M. Castellano

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Reionization; Warm Dark Matter; sterile neutrinos; escape fraction;

Online: 8 November 2021 (15:55:37 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202109.0004.v2

Spirals and Rings in Barred Galaxies by the ROTASE Model

Hongjun Pan

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: ROTASE model; formation of spiral arms; X-matter; black hole; matter conversion; hydrogen generation; chain-link; single ring; double rings; ring crossing

Online: 2 November 2021 (17:48:35 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202110.0402.v1

Jim Henry, Mesut Yurukcu, George Nnanna

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Universe; galaxies; Milky Way Galaxy; spiral galaxies; hurricanes; pattern.

Online: 27 October 2021 (11:49:50 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202110.0290.v1

A Fast Data Processing Technique for Continuous Gravitational Wave Searches

Massimo Tinto

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Gravitational waves; Interferometers; Data Analysis; Continuous gravitational wave signals

Online: 20 October 2021 (12:31:00 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202110.0129.v1

How Are Red and Blue Quasars Different? The Radio Properties

Victoria Anne Fawcett, David Alexander, David Rosario, Lizelke Klindt

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Quasars; Galaxies; Radio; Supermassive Black-Holes

Online: 8 October 2021 (09:12:59 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Working Paper ARTICLE

The Spacetime and Finite-Size Nuclear Structure of The Black Hole

Ting-Hang Pei

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: black hole; Schwarzschild radius; Kerr-Newman metric; finite-size nucleus

Online: 21 September 2021 (09:45:58 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202101.0524.v4

Universe at Zero Second and The Creation Process of The First Particle from the Absolute Void

Shivan Jumaa

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: elementary dimensions; absolute void; early universe; universe at zero second; Void resistant

Online: 26 August 2021 (09:48:21 CEST)

Show abstract| Download PDF| Share

Working Paper ARTICLE

On the Role of Cosmic Mass in Understanding the Relationships among Galactic Dark Matter, Visible Matter and Flat Rotation Speeds

U.V.S. Seshavatharam, S. Lakshminarayana

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Planck mass; Mach’s principle; distance cosmic mass; galactic visible mass; galactic dark mass; galactic flat rotation speeds; time dependent reference mass;

Online: 9 August 2021 (09:16:42 CEST)

Show abstract| Download PDF| Share

Preprint HYPOTHESIS | doi:10.20944/preprints202010.0004.v10

The Carbon-Based Evolutionary Theory (CBET)

Ji-Ming Chen

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: carbon-based entity; driving force; energy; evolution; fitness; mechanism; natural selection; speciation; thermodynamics; theory

Online: 26 July 2021 (12:02:52 CEST)

Show abstract| Download PDF| Supplementary Files| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202106.0597.v1

Relativistic Cosmology with an Introduction to Inflation

Muhammad Zahid Mughal, Iftikhar Ahmad, Juan Luis GARCÍA GUIRAO

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: spacetime; relativistic cosmology; big bang model; inflation

Online: 24 June 2021 (09:33:15 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202105.0576.v1

A Vacuum of Quantum Gravity That is Ether.

Sergey L. Cherkas, Vladimir L. Kalashnikov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: quantum gravity; vacuum state; vacuum energy,; eicheon

Online: 24 May 2021 (15:06:43 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202010.0586.v2

The Effects of Inertial Forces on the Dynamics of Disk Galaxies

Tomer Zimmerman, Roy Gomel

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: reference systems; galaxies: kinematics and dynamics; cosmology: dark matter

Online: 24 May 2021 (10:15:05 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Working Paper ARTICLE

The Secret of Planets' Perihelion Between Newton and Einstein

Christian Corda

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Planets' perihelion; Newtonian gravity; general relativity; time dilation

Online: 7 May 2021 (09:14:24 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202105.0110.v1

Lensing Effects in Retarded Gravity

Asher Yahalom

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: spacetime symmetry; relativity of spacetime; retardation; lensing

Online: 6 May 2021 (15:28:22 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Supplementary Files| Share

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.

Working Paper ARTICLE

Mechanics of the Gyroscopic Precession and Calculation of the Galactic Mass

Jian Sun, Ting Xu, Zheng Jiao, Hui Wang

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: gyroscopic precession; solar system; galactic mass

Online: 9 April 2021 (14:59:34 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Our Peculiar Motion Inferred from Number Counts of Mid Infra Red AGNs and the Discordance Seen with the Cosmological Principle

Ashok K. Singal

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: active galactic nuclei surveys; cosmic background radiation; large-scale structure of universe; solar system peculiar motion; cosmological principle

Online: 22 March 2021 (11:58:59 CET)

Show abstract| Download PDF| Share

According to the Cosmological Principle the Universe is isotropic and no preferred direction would be seen by an observer that might be stationary with respect to the expanding cosmic fluid. However, because of observer’s partaking in the solar system peculiar motion, there would appear in some of the observed properties of the Cosmos a dipole anisotropy, which could in turn be exploited to determine the peculiar motion of the solar system. The dipole anisotropy in the Cosmic Microwave Background Radiation (CMBR) has given a peculiar velocity vector 370 km s−1 along l=264∘,b=48∘. However, some other dipoles, for instance, from the number counts, sky brightness or redshift distributions in large samples of distant Active Galactic Nuclei (AGNs), have yielded values of the peculiar velocity many times larger than that from the CMBR, though surprisingly, in all cases the directions agreed with the CMBR dipole. Here we determine our peculiar motion from a sample of 0.28 million AGNs, selected from the Mid Infra Red Active Galactic Nuclei (MIRAGN) sample comprising more than a million sources. From this, we find a peculiar velocity, which is more than four times the CMBR value, although the direction seems to be within ∼2σ of the CMBR dipole. A genuine value of the solar peculiar velocity should be the same irrespective of the data or the technique employed to estimate it. Therefore, such discordant dipole amplitudes, might mean that the explanation for these dipoles, including that of the CMBR, might in fact be something else. But, the observed fact that the direction in all cases, is the same, though obtained from completely independent surveys using different instruments and techniques, by different sets of people employing different computing routines, might nonetheless indicate that these dipoles are not merely due to some systematics, otherwise why would they all be pointing along the same direction. It might instead suggest a preferred direction in the Universe, implying a genuine anisotropy, which would violate the Cosmological Principle, the core of the modern cosmology.

Preprint ARTICLE | doi:10.20944/preprints202103.0279.v1

Resolution of the Faint Young Sun Paradox via the Expanding Earth and Radiation Balance Equilibrium Hypothesis

Golden Gadzirayi Nyambuya

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Expanding Earth; Exolife; Faint Young Sun Paradox; Radiation Balance Equation.

Online: 10 March 2021 (13:07:09 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202101.0612.v1

Variable Planck’s Constant: Treated As A Dynamical Field And Path Integral

Rand Dannenberg

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Modified Gravity; variable constants; fundamental constants

Online: 29 January 2021 (11:48:01 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint HYPOTHESIS | doi:10.20944/preprints202012.0680.v1

Is Dark Matter Light?

Lorne Hofstetter

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: dark matter; Milky Way dark mater halo; galaxy kinematics; rotation curves; cosmology; dark energy

Online: 28 December 2020 (11:02:57 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202010.0320.v3

Extended General Relativity for a Curved Universe

Mohammed B. Al-Fadhli

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: General Relativity; Curved Universe

Online: 6 November 2020 (13:11:37 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.3390/sci2030071

Lasers for Satellite Uplinks and Downlinks

Mark Dmytryszyn, Matthew Crook, Timothy Sands

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: telescopes; lightweight telescope mirrors; adaptive optics; better resolution; increased accuracy; more bandwidth; cluster of satellites; innovative platform; more capabilities into smaller packages; far-shorter time from click to customer

Online: 9 September 2020 (00:00:00 CEST)

Show abstract| Share

The use of Light Amplification by Stimulated Emission of Radiation (i.e., LASERs or lasers) by the U.S. Department of Defense is not new and includes laser weapons guidance, laser-aided measurements, even lasers as weapons (e.g., Airborne Laser). Lasers in support of telecommunications is also not new. The use of laser light in fiber optics shattered thoughts on communications bandwidth and throughput. Even the use of lasers in space is no longer new. Lasers are being used for satellite-to-satellite crosslinking. Laser communication can transmit orders-of-magnitude more data using orders-of-magnitude less power and can do so with minimal risk of exposure to the sending and receiving terminals. What is new is using lasers as the uplink and downlink between the terrestrial segment and the space segment of satellite systems. More so, the use of lasers to transmit and receive data between moving terrestrial segments (e.g., ships at sea, airplanes in flight) and geosynchronous satellites is burgeoning. This manuscript examines the technological maturation of employing lasers as the signal carrier for satellite communications linking terrestrial and space systems. The purpose of the manuscript is to develop key performance parameters (KPPs) to inform U.S. Department of Defense initial capabilities documents (ICDs) for near-future satellite acquisition and development. By appreciating the history and technological challenges of employing lasers rather than traditional radio frequency sources for satellite uplink and downlink signal carrier, this manuscript recommends ways for the U.S. Department of Defense to employ lasers to transmit and receive high bandwidth, large-throughput data from moving platforms that need to retain low probabilities of detection, intercept, and exploitation (e.g., carrier battle group transiting to a hostile area of operations, unmanned aerial vehicle collecting over adversary areas). The manuscript also intends to identify commercial sector early-adopter fields and those fields likely to adapt to laser employment for transmission and receipt.

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)

Show abstract| Download PDF| Share

Working Paper ARTICLE

The Shadow of M87* Black Hole within Rational Nonlinear Electrodynamics

Sergey Kruglov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: nonlinear electrodynamics; magnetic black holes; Event Horizon Telescope; M87* black hole

Online: 25 August 2020 (07:57:30 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Search Results

437 articles found