Name: Louise Rebecca
Affiliation: CHRIST (Deemed to be University)
Conference ID : ASI2022_416
Title : Baryonic matter abundance and MONG
Authors : Louise Rebecca (CHRIST (Deemed to be University), Bangalore, 560 095, India) Kenath Arun (CHRIST (Deemed to be University), Bangalore, 560 095, India) C Sivaram (Indian Institute of Astrophysics, Bangalore, 560 034, India)
Abstract Type: Poster
Abstract Category : General Relativity and Cosmology
Abstract : Presence of dark matter is one of the biggest unresolved problems in cosmology as it remains undetected in various experiments. In view of these negative results, we had earlier proposed alternate models by postulating a minimal field strength and a minimal acceleration. These postulates lead to the modification of Newtonian and relativistic gravity (MONG and MORG). Here we discuss some of the physical implications that independently lead to the need for non-baryonic matter and conclude that it can be accounted for from the results of MONG. We show that for the universe with minimal gravitational field strength implies the need for an additional five times more mass. From maximal acceleration of the outward radiation pressure force (corresponding to maximum possible luminosity) we deduce the total baryonic mass in the universe. This maximum acceleration is an order of magnitude greater than the minimum gravitational acceleration, implying a total baryonic mass that is ~10 times lesser than the observed total mass of the universe. The upper limits of the balance between gravitational and radiation pressure force gives a baryonic density ~3-4% of the critical density, implying that baryonic matter constitutes <5% of the total energy density of the universe. In this work we suggests that MONG accounts for the above supposed need for non-baryonic matter without actually invoking it. For a typical galaxy like the Milky Way, beyond a distance of ~10kpc from the galactic center, the gravitational self-energy term (additional term in the Poisson’s equation introduced in MONG) begins to dominate, giving a force that increases logarithmically with distance thus accounting for the dynamics without dark matter. This argument can similarly be extended to larger cosmic scales.