Kalita, S and Sarmah, L (2022) Weak-field limit of f(R) gravity to unify peculiar white dwarfs. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 827 .
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Abstract
In recent years, the idea of sub- and super-Chandrasekhar limiting mass white dwarfs (WDs), which are potential candidates to produce under- and over-luminous type Ia supernovae, respectively, has been a key interest in the scientific community. Although researchers have proposed different models to explain these peculiar objects, modified theories of Einstein's gravity, particularly f(R) gravity with R being the scalar curvature, seem to be one of the finest choices to explain both the regimes of these peculiar WDs. It was already shown that considering higher-order corrections to the Starobinsky model with two parameters, the structure of sub- and super-Chandrasekhar progenitor WDs can be explained self consistently. It is also well-known that WDs can be considered Newtonian objects because of their large size. In this paper, we derive the weak-field limit of f(R) gravity, which turns out to be the higher-order correction to the Poisson equation. Later, we use this equation to obtain the structures of sub- and super-Chandrasekhar limiting mass WDs at various central densities incorporating just one model parameter. © 2022 The Author(s)
| Item Type: | Journal Article |
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| Publication: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Publisher: | Elsevier B.V. |
| Additional Information: | The copyright for this article belongs to Authors |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 17 Feb 2022 06:38 |
| Last Modified: | 17 Feb 2022 06:38 |
| URI: | http://eprints.iisc.ac.in/id/eprint/71311 |
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