TY - JOUR
AU - B.A. Zhami,
AU - K.Boshkayev,
AU - H. Quevedo,
AU - Zh.A. Kalymova,
PY - 2019/12/12
Y2 - 2022/08/13
TI - ON SOME EFFECTS IN THE STRUCTURE OF WHITE DWARFS
JF - Известия НАН РК. Серия информатики
JA - СФМН
VL -
IS - 6
SE - Статьи
DO -
UR - https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1695
SP - 80-89
AB - <p>We review the effects of general relativity, finite temperatures, nuclear composition and rotation<br>which make a substantial contributionto the structure of white dwarfs.First, the mass-radius, mass-central density<br>relations and mass, density profiles of a white dwarf with total mass1.415 M⨀ are constructed both in Newtonian<br>gravity and general relativity, which clearly show that the general relativistic effects are significant for massive white<br>dwarfs close to the Chandrasekhar mass limit, consequently, in strong gravitational fields.Second, hot white dwarfs<br>are studied in the framework of general relativity. Basic parameters of white dwarfs such as the central density,<br>pressure, mass, radius and etc. are calculated. It is shown that the effects of finite temperatures play a key role in low<br>mass white dwarfs.Third, cold white dwarfs are investigated within general relativity employing the Salpeter<br>equation of state. Finally, we investigate the equilibrium configurations of uniformly rotating white dwarfs, using<br>Chandrasekhar and Salpeter equations of state in Newtonian gravity and plot mass-radius, mass-central density<br>relations. It is demonstrated that the effects of rotation are essential in the structure of white dwarfs in allmass range.</p>
ER -