preprints.org > physical sciences > astronomy and astrophysics > doi: 10.20944/preprints202201.0459.v1

Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 30 January 2022 / Approved: 31 January 2022 / Online: 31 January 2022 (12:54:41 CET)
Version 2 : Received: 7 February 2022 / Approved: 8 February 2022 / Online: 8 February 2022 (13:30:19 CET)

The standard model of cosmology assumes that our Universe began 14 Gyrs (billion years) ago with a hot Big Bang expansion out of nothing. It can explain a vast range of different astrophysical data from a handful of free cosmological parameters. However successful this model is, we have no direct evidence or fundamental understanding of some key assumptions: low entropy start, Inflation, Dark Matter and Dark Energy. Here we present a simpler and more physical explanation for the same observations that do not require such assumptions or new laws of Physics. It is based on the evidence that we live inside a Black Hole (BH) of mass $ M \simeq 5 \times 10^{22} M_{\odot}$, which we observed as cosmic acceleration. How did the Big Bang end up inside such a BH? We propose that 25 Gyrs ago, a very low density cloud with this mass collapsed and form a BH. The collapse continued inside until it reached neutron energy densities (GeV) over solar mass ($M_{\odot}$) causal regions that exploded, like supernovae, producing a bounce and the Big Bang expansion. During collapse, perturbations exit the horizon to re-enter during expansion, given rise to the observed universe. We review the theoretical and observational evidence for such BH Universe.

Cosmology; Dark Energy; General Relativity; Black Holes

Physical Sciences, Astronomy and Astrophysics

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