白矮星[White Dwarf] - 达人(其实～我是卧底，来自外星)

2004/10/05 | 白矮星[White Dwarf]
类别(Ω〖物理〗) | 评论(0) | 阅读(34) | 发表于 13:19: White dwarfs are supported by electron degeneracy pressure.Because is small for the electrons in a compact white dwarf, must be large (by the uncertainty principle).This means that electrons gain a large momentum which exerts a pressure and supports the star. This leads to the paradoxical result that the more massive a white dwarf, the smaller its radius. The Chandrasekhar limit is the maximum mass a white dwarf may have, where is the solar mass.Shu (1982, p. 128) gives . The most massive white dwarf observed is RE J0317-853, with a mass of where is the solar mass (Barstow et al.1995). Most white dwarfs have masses and radii , where is the Earth radius.A white dwarf shines by radiating internal heat, eventually cooling to a black dwarf.; 0