PreprintCC BY 4.0arXiv
Temperature effects on white dwarfs in modified gravity
Abstract
In this article we analyze the effects of a finite temperature equation of state on the equilibrium structure of white dwarfs in massive Brans-Dicke theory as well as the symmetron and dilaton screening mechanisms. We compute and present the numerically obtained mass-radius relation, effective gravitational constant as well as radial profiles of the scalar field, pressure and metric within the star. We show that assuming a non-zero temperature effectively results in a larger radius while leaving the total mass of the star essentially unchanged, and discuss the interplay between the effective gravitational constant, central density, and radius of the star.
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BibTeX
@misc{vidal2026temperature,
title = {{Temperature effects on white dwarfs in modified gravity}},
author = {Sofía Vidal and Aneta Wojnar and Laur Järv},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2608.12992},
eprint = {2608.12992},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.12992},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Temperature effects on white dwarfs in modified gravity
AU - Sofía Vidal
AU - Aneta Wojnar
AU - Laur Järv
PY - 2026
DA - 2026/10/15
PB - arXiv
DO - 10.48550/arxiv.2608.12992
UR - https://arxiv.org/abs/2608.12992
AB - In this article we analyze the effects of a finite temperature equation of state on the equilibrium structure of white dwarfs in massive Brans-Dicke theory as well as the symmetron and dilaton screening mechanisms. We compute and present the numerically obtained mass-radius relation, effective gravitational constant as well as radial profiles of the scalar field, pressure and metric within the star. We show that assuming a non-zero temperature effectively results in a larger radius while leaving the total mass of the star essentially unchanged, and discuss the interplay between the effective gravitational constant, central density, and radius of the star.
ER -