Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...298..474m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 298, Nov. 15, 1985, p. 474-479. Research supported by the Ministero della P
Astronomy and Astrophysics
Astronomy
18
Black Holes (Astronomy), Gravitational Collapse, Stellar Mass, Stellar Rotation, Angular Momentum, Astronomical Models, Magnetic Fields, Relativistic Theory, Stellar Mass Ejection
Scientific paper
The material contained within a stationary black hole event horizon must satisfy the condition a/m is less than 1, where a is the specific angular momentum and m is the gravitational mass, both quantities being measured in geometrized units. For most astrophysical objects which might undergo gravitational collapse leading to black hole formation, the ratio a/m is greater than 1, and so the question arises of how it could be reduced. Mass shedding is one possible mechanism. It is shown here that mass shedding will very frequently occur, but that a/m cannot, in general, be reduced to less than above 40 percent of its initial value by this means unless there is significant redistribution of angular momentum during the collapse.
de Felice Fernando
Miller Christopher J.
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