Year: 2026
Type: preprint
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.
Source: arXiv (Cornell University)
Authors: Vidal, Sofía, Wojnar, Aneta, Järv, Laur
Institutions: University of Tartu, University of Wrocław
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: Eesti Teadusagentuur
Awards: Space - Time - Matter, G5068097052
OpenAlex ID: W7203464649
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