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2004/09/30 | 钱德拉塞卡极限[Chandrasekhar Limit]
类别(Ω〖物理〗)
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发表于 12:59
Around 1930,
S. Chandrasekhar
studied astrophysical models of
white dwarf
stars and came to the conclusion that no
white dwarf
can be more massive than about 1.2
solar masses
(
)
This became known as the Chandrasekhar limit. Chandrasekhar was awarded the Nobel Prize for these studies, and went on to study stellar structure, resulting in the concept of
black holes
.
A simple treatment of the problem for a relativistic white dwarf gives
where
is the mean number of
nucleons
per
electron
. For iron, which has the highest
binding fraction
,
and
A more careful treatment gives
(Weinberg 1972, p. 306). A more modern value is
Shu (1982, p. 128) gives
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