Sixteenth Marcel Grossmann Meeting

Static and rotating white dwarfs at finite temperatures

8 Jul 2021, 16:30

15m

Invited talk in the parallel session White Dwarfs, Magnetic Compact Stars and Nuclear Astrophysics White Dwarfs, Magnetic Compact Stars, and Nuclear Astrophysics

Speaker

Kuantay Boshkayev (Kazakh National University)

Description

Static and uniformly rotating, cold and hot white dwarfs are investigated both in Newtonian gravity and general theory of relativity, employing the well-known Chandrasekhar equation of state. The mass-radius, mass-central density, radius-central density etc relations of stable white dwarfs with $\mu =A/Z=2$ and $\mu =56/26$ (where $A$ is the average atomic weight and $Z$ is the atomic charge) are constructed for different temperatures. It is shown that near the maximum mass the mass of hot rotating white dwarfs is slightly less than for cold rotating white dwarfs, though for static white dwarfs the situation is opposite.