Self-similar gravitational collapse in the case of volume energy losses

Details Self-similar gravitational collapse in the case of volume energy losses Self-similar gravitational collapse in the case of volume energy losses

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991azh....68..574m&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 68, May-June 1991, p. 574-589. In Russian.

Astronomy and Astrophysics

Astronomy

5

Energy Dissipation, Gravitational Collapse, Interstellar Matter, Stellar Mass Accretion, Stellar Radiation, Stellar Cores, Stellar Evolution, Stellar Models

Scientific paper

A self-similar regime of gravitational collapse is investigated for the case of volume energy losses. The first stage of the collapse occurs cumulatively: at a certain point in time, the density in the center turns to infinity. At the second stage, a point mass originates in the center; this mass increases with time due to the accretion of the matter distributed in space. The applicability limits of the self-similar solution are established in connection with the onset of the opacity of the collapsing matter with respect to the radiation carrying away the energy. The self-similar solutions are applied to the collapse of evolved stellar cores as well as to that of interstellar clouds of molecular hydrogen.

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