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Title: Constraints on modified gravity models from white dwarfs

Abstract

Modified gravity theories can introduce modifications to the Poisson equation in the Newtonian limit. As a result, we expect to see interesting features of these modifications inside stellar objects. White dwarf stars are one of the most well studied stars in stellar astrophysics. We explore the effect of modified gravity theories inside white dwarfs. We derive the modified stellar structure equations and solve them to study the mass-radius relationships for various modified gravity theories. We also constrain the parameter space of these theories from observations.

Authors:
;  [1];  [2]
  1. Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai 400005, Maharashtra (India)
  2. Department of Physics, Centre for Excellence in Basic Sciences, Mumbai 400098, Maharashtra (India)
Publication Date:
OSTI Identifier:
22667664
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; GRAVITATION; MASS; MODIFICATIONS; POISSON EQUATION; SPACE; WHITE DWARF STARS

Citation Formats

Banerjee, Srimanta, Singh, Tejinder P., and Shankar, Swapnil, E-mail: srimanta.banerjee@tifr.res.in, E-mail: swapnil.shankar@cbs.ac.in, E-mail: tpsingh@tifr.res.in. Constraints on modified gravity models from white dwarfs. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/10/004.
Banerjee, Srimanta, Singh, Tejinder P., & Shankar, Swapnil, E-mail: srimanta.banerjee@tifr.res.in, E-mail: swapnil.shankar@cbs.ac.in, E-mail: tpsingh@tifr.res.in. Constraints on modified gravity models from white dwarfs. United States. doi:10.1088/1475-7516/2017/10/004.
Banerjee, Srimanta, Singh, Tejinder P., and Shankar, Swapnil, E-mail: srimanta.banerjee@tifr.res.in, E-mail: swapnil.shankar@cbs.ac.in, E-mail: tpsingh@tifr.res.in. Sun . "Constraints on modified gravity models from white dwarfs". United States. doi:10.1088/1475-7516/2017/10/004.
@article{osti_22667664,
title = {Constraints on modified gravity models from white dwarfs},
author = {Banerjee, Srimanta and Singh, Tejinder P. and Shankar, Swapnil, E-mail: srimanta.banerjee@tifr.res.in, E-mail: swapnil.shankar@cbs.ac.in, E-mail: tpsingh@tifr.res.in},
abstractNote = {Modified gravity theories can introduce modifications to the Poisson equation in the Newtonian limit. As a result, we expect to see interesting features of these modifications inside stellar objects. White dwarf stars are one of the most well studied stars in stellar astrophysics. We explore the effect of modified gravity theories inside white dwarfs. We derive the modified stellar structure equations and solve them to study the mass-radius relationships for various modified gravity theories. We also constrain the parameter space of these theories from observations.},
doi = {10.1088/1475-7516/2017/10/004},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 10,
volume = 2017,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 2017},
month = {Sun Oct 01 00:00:00 EDT 2017}
}