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General Relativity and Quantum Cosmology

arXiv:2411.12526 (gr-qc)
[Submitted on 19 Nov 2024]

Title:Properties of white dwarf with anisotropic pressure in Rainbow gravity

Authors:Takol Tangphati, Grigoris Panotopoulos, Ayan Banerjee, Anirudh Pradhan
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Abstract:We investigate the properties of anisotropic white dwarf stars within the rainbow gravity adopting for matter content the Chandrasekhar model based on an ideal Fermi gas at zero temperature. We study in detail the effects of the anisotropic factor on stellar mass and radius, the speed of sound, and the relativistic adiabatic index in both radial and tangential directions. We find that causality is never violated, whereas the stability criterion based on the relativistic adiabatic index is not met when the objects are characterized by a positive anisotropic factor close to the Chandrasekhar limit. We present this significant observation here for the first time, to the best of our knowledge.
Comments: 9 pages, 7 figures. Version accepted for publication in Physics of the Dark Universe
Subjects: General Relativity and Quantum Cosmology (gr-qc)
Cite as: arXiv:2411.12526 [gr-qc]
  (or arXiv:2411.12526v1 [gr-qc] for this version)
  https://doi.org/10.48550/arXiv.2411.12526

Submission history

From: Ayan Banerjee [view email]
[v1] Tue, 19 Nov 2024 14:18:40 UTC (910 KB)
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