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

Arun Kenath; C Sivaram; Avijeet Prasad; Louise Rebecca

doi:10.20944/preprints202006.0239.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 17 June 2020 / Approved: 19 June 2020 / Online: 19 June 2020 (10:57:02 CEST)

While there is overwhelming evidence for dark matter (DM) in galaxies and galaxy clusters, all searches for DM particles have so far proved negative. It is not even clear whether only one particle is involved or a combination or particles, their masses not precisely predicted. This non-detectability raises the possible relevance of modified gravity theories – MOND, MONG, etc. Here we consider a specific modification of Newtonian gravity (MONG) which involves gravitational self-energy, leading to modified equations whose solutions imply flat rotation curves and limitations of sizes of clusters. The results are consistent with current observations including that involving large spirals. This modification could also explain the current Hubble tension. We also consider effects of dark energy (DE) in terms of a cosmological constant.

dark matter; dark energy; alternate theories of gravity; MOND; Hubble tension

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

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