Cooling Process of White Dwarf Stars in Palatini $f(R)$ Gravity
Surajit Kalita (UCT), Lupamudra Sarmah (IIA), Aneta Wojnar, (University of Tartu)
TL;DR
This paper investigates how Palatini $f(R)$ gravity influences white dwarf cooling, revealing that super-Chandrasekhar white dwarfs take longer to cool than sub-Chandrasekhar ones or Newtonian models.
Contribution
It provides a re-analysis of white dwarf cooling within Palatini $f(R)$ gravity, highlighting the impact on stellar structure and cooling times.
Findings
Super-Chandrasekhar white dwarfs cool more slowly than sub-Chandrasekhar ones.
Modified gravity alters white dwarf structures and their cooling behavior.
White dwarf ages are affected by the choice of gravity model.
Abstract
A simple cooling model of white dwarf stars is re-analyzed in Palatini gravity. Modified gravity affects the white dwarf structures and consequently their ages. We find that the resulting super-Chandrasekhar white dwarfs need more time to cool down than sub-Chandrasekhar ones, or when compared to the Newtonian models.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Geophysics and Gravity Measurements · Pulsars and Gravitational Waves Research