Computer Science
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.296...48o&link_type=abstract
Nature, vol. 296, Mar. 4, 1982, p. 48, 49.
Computer Science
Galactic Nuclei, Gravitational Collapse, Magnetic Stars, Stellar Evolution, Stellar Rotation, Supermassive Stars, Active Galactic Nuclei, Main Sequence Stars, Seyfert Galaxies, Stellar Mass
Scientific paper
Consideration is given to the influence of interactions with surrounding stars on the lifetime of a magnetoid - a supermassive rotating highly magnetized star at the center of a compact galactic nucleus. Calculations are presented for the critical mass at which the supermassive star formed from captured stars at the center of the magnetoid will collapse, and it is shown that the presence of an external pressure on the surface of the supermassive star acts to greatly increase the critical mass. In particular, for a supermassive star embedded in a magnetoid of mass 10 to the 8th solar masses and radius 10 to the 16th cm, the critical mass is increased from 100,000 solar masses to 0.67 x 10 to the 7th solar masses, implying a main sequence lifetime as long as 1 million years. For a magnetoid of lower mass, expected in active galactic nuclei, it is proposed that the total mass of stars accumulated within the magnetoid should be considerably less than the critical value, and slow stellar evolution would occur.
Ozernoi L. M.
Usov Vladimir V.
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