Black Holes, the Big Bang and the Habitable Universe: Are They Really Compatible?

Hujeirat, A.

doi:10.4236/jmp.2018.91005

Cited by 5 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the present scenario suggests that these objects must be the natural consequence of dying pulsars and neutron stars in an ever expanding universe [17] [18]. Unlike supermassive gravitational Bose-Einstein condensates (GBECs) which have been verified to be dynamically unstable [19], the present stellar-size SBs are stable, but end invisible due to their maximum compactness, which makes them excellent BH-candidates.…”

Section: Summary and Discussionmentioning

confidence: 85%

Glitches: The Exact Quantum Signatures of Pulsars Metamorphosis

Hujeirat¹

2018

JMP

Self Cite

View full text Add to dashboard Cite

The observed recurrence of glitches in pulsars and neutron stars carries rich information about the evolution of their internal structures. In this article, I show that the glitch-events observed in pulsars are exact quantum signatures for their metamorphosis into dark super-baryons (SBs), whose interiors are made of purely incompressible superconducting gluon-quark superfluids. Here the quantum nuclear shell model is adopted to describe the permitted energy levels of the SB, which are assumed to be identical to the discrete spinning rates SB Ω that SBs are allowed to rotate with. Accordingly, a glitch-event corresponds to a prompt spin-down of the superconducting SB from one energy level to the next, thereby expelling a certain number of vortices, which in turn spins up the ambient medium. The process is provoked mainly by the negative torque of the ambient dissipative nuclear fluid and by a universal scalar field φ at the background of a supranuclear dense matter. As dictated by the Onsager-Feynman equation, the prompt spin-down must be associated with increase of the dimensions of the embryonic SB to finally convert the entire pulsar into SB-Objects on the scale of Gyrs. Based on our calculations, a Vela-like pulsar should display billions of glitches during its lifetime, before it metamorphoses entirely into a maximally compact SB-object and disappears from our observational windows. The present model predicts the mass of SBs and ∆Ω Ω in young pulsars to be relatively lower than their older counterparts.

show abstract

Section: Summary and Discussionmentioning

confidence: 85%

Glitches: The Exact Quantum Signatures of Pulsars Metamorphosis

Hujeirat¹

2018

JMP

Self Cite

View full text Add to dashboard Cite

show abstract

“…Following the analysis and Eqs. (13,14,15) in [18], the correlation of the inertia of the ambient dissipative media, I AM , of the Crab and Vela pulsars reads: In (b) the rigid-body rotation and increasing size of the SuSu-core for four successive glitch-events are shown. The boundary layer here has the width δR, area δS and contains δN vortices.…”

Section: Summary and Discussionmentioning

confidence: 99%

“…Following the analysis and Eqs. (13,14,15) in [18], the correlation of the inertia of the ambient dissipative media, I AM , of the Crab and Vela pulsars reads: whereas the requirement that ejected rotational energy from the core of the Vela pulsar in the form of vortices should be observationally noticeable, implies that R now,V ela SB ≥ 10 −2 R V ela .…”

Section: Summary and Discussionmentioning

confidence: 99%

Glitching Pulsars: Unraveling the Interactions of General Relativistic and Quantum Fields in the Strong Field Regimes

Hujeirat

Samtaney

2019

JMP

Self Cite

View full text Add to dashboard Cite

We present a modification of our previous model for the mechanisms underlying the glitch phenomena in pulsars and young neutron stars. Accordingly, pulsars are born with embryonic cores comprising of purely incompressible superconducting gluon-quark superfluid (henceforth SuSu-cores). As the ambient medium cools and spins down due to emission of magnetic dipole radiation, the mass and size of SuSu-cores are set to grow discretely with time, in accordance with the Onsager-Feynmann analysis of superfluidity. Presently, we propose that the spacetime embedding glitching pulsars is dynamical and of bimetric nature: inside SuSu-cores the spacetime must be flat, whereas the surrounding region, where the matter is compressible and dissipative, the spacetime is Schwarzschild. It is further proposed that the topological change of spacetime is derived by the strong nuclear force, whose operating length scales is found to increase with time to reach O(1) cm at the end of the luminous lifetimes of pulsars. The model presented here model is in line with the recent radio and GW observations of pulsars and NSs. * Electronic address: AHujeirat@uni-hd.de † Electronic address: Ravi.Samtaney@kaust.edu.sa arXiv:1908.07986v1 [gr-qc]

show abstract

“…On the other hand, despite advanced BH theoretical research and the recent tremendous efforts by the EHT observations, which placed the existence of BHs beyond doubt, it is, however still unclear why the universe chose to adopt exponential inflation in the early universe rather than collapsing into a supermassive black hole [15,16,17] which is the preferable evolutionary track, when taking into account the short length and time-scales characterizing the system. Moreover, the ΛDCM-cosmologies failed to resolve other fundamental problems in astrophysics and cosmology, e.g.…”

Section: Introductionmentioning

confidence: 99%

Foundation of the unicentric model of the observable universe - UNIMOUN

Hujeirat¹

2023

Preprint

View full text Add to dashboard Cite

In view of the growing difficulties of $\Lambda$CDM-cosmologies to compete with recent highly accurate cosmological observations,I propose the alternative model: the \textbf{Uni}centric \textbf{M}odel of the \textbf{O}bservable \textbf{UN}iverse (UNIMOUN).The model relies on employing a new time-dependent $\mathcal{H}$-metric for the GR field equations, which enables reversible phase transitionsbetween normal compressible fluids and incompressible quantum superfluids, necessary for studying the cosmic evolution of the observable universe.\\The main properties of UNIMOUN read: 1) The observable universe was born in a flat spacetime environment, which is a tiny fraction of our infinitely large and flat parent universe, 2) Our big bang (BB) happened to occur in our neighbourhood, thereby endowing the universe the observed homogeneity and isotropy, 3) The energy density in the universe is upper-bounded by the universal critical density $\rho^{uni}_{cr},$ beyond which matter becomes purely incompressible, rendering formation of physical singulareties, and in partcular black holes, impossible, 4) Big bangs are neither singular events nor invoked by external forces, but rather, they are common self-sustaining events in our parent universe, 5) The progenitors of BBs are created through the merger of cosmically dead and inactive neutron stars and/or through "supermassive black holes" that are currently observed at the centres of most massive galaxies, 6) The progenitors are made up of purely incompressible entropy-free superconducting gluon-quark superfluids with $\rho=\rho^{uni}_{cr}$ (SuSu-matter), which endows these giant objects measurable sizes, 7) Spacetimes embedding SuSu-matter are conformally flat.\\ It is shown that UNIMOUN is capable of dealing with or providing answers to several fundamental open questions in astrophysics and cosmology without invoking inflation, dark matter or dark energy

show abstract

Black Holes, the Big Bang and the Habitable Universe: Are They Really Compatible?

Cited by 5 publications

References 13 publications

Glitches: The Exact Quantum Signatures of Pulsars Metamorphosis

Glitches: The Exact Quantum Signatures of Pulsars Metamorphosis

Glitching Pulsars: Unraveling the Interactions of General Relativistic and Quantum Fields in the Strong Field Regimes

Foundation of the unicentric model of the observable universe - UNIMOUN

Contact Info

Product

Resources

About