Does elasticity stabilize a magnetic neutron star?

Bera, Prasanta; Jones, D. I.; Andersson, Nils

doi:10.1093/mnras/staa3015

Cited by 15 publications

(9 citation statements)

References 49 publications

(49 reference statements)

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“…The Hubble radius at that time 𝑟 𝐻 ≃ 30Km corresponds to a solar mass, so the situation is similar to the interior of a collapsing star. We conjecture that this leads to Big Bounce, either because of supernova explosion or because of the elasticity of the neutron density [67]. This generates a hot Big Bang from the Big Crunch, similar to the bouncing of a ball.…”

Section: The Big Bouncementioning

confidence: 94%

How the Big Bang End Up Inside a Black Hole

Gaztañaga¹

2022

Preprint

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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.

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Section: The Big Bouncementioning

confidence: 94%

How the Big Bang End Up Inside a Black Hole

Gaztañaga¹

2022

Preprint

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“…The Hubble radius at that time corresponds to a solar mass, so the situation is similar to the interior of a collapsing star. We conjecture that this leads to Big Bounce, either because of supernova explosion or because of the elasticity of the neutron density [67,68]. This generates a hot Big Bang from the Big Crunch, similar to the bouncing of a ball.…”

Section: The Big Bouncementioning

confidence: 94%

How the Big Bang End Up Inside a Black Hole

Gaztañaga¹

2022

Preprint

View full text Add to dashboard Cite

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 dust cloud collapsed and form such BH. As there was no pressure support, the collapse continued inside until it reached neutron energy densities (GeV). Causal regions of solar mass size rebound by neutron degeneracy, like a supernovae, producing the Big Bang expansion and compact dark matter remnants. During collapse, perturbations exit the horizon to re-enter during expansion, given rise to the observed universe. We review the evidence for such BH Universe.

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“…The Hubble radius at that time corresponds to a solar mass, so the situation is similar to the interior of a collapsing star. This should lead to a bounce, either because of supernova explosion or because of the elasticity of the neutron density [17]. This Big Bounce generates a hot Big Bang, similar to the bouncing of a ball on the floor [16].…”

Section: How λ Emergesmentioning

confidence: 99%

The Cosmological Constant as Event Horizon

Gaztañaga

2022

Symmetry

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General Relativity allows for a cosmological constant (Λ) which has inspired models of cosmic Inflation and Dark Energy. We show instead that rΛ=3/Λ corresponds to an event horizon: a causal boundary term in the action. Our Universe is expanding inside its Schwarzschild radius rS=rΛ=2GM, which could have originated from a uniform free falling cloud of mass M that collapsed as a Black Hole (BH) 25 Gyrs ago. Such a BH Universe allows for large-scale structure formation without the need of Inflation or Dark Energy.

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Does elasticity stabilize a magnetic neutron star?

Cited by 15 publications

References 49 publications

How the Big Bang End Up Inside a Black Hole

How the Big Bang End Up Inside a Black Hole

How the Big Bang End Up Inside a Black Hole

The Cosmological Constant as Event Horizon

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