Self-gravitating and rotating hot toroids

Details Self-gravitating and rotating hot toroids Self-gravitating and rotating hot toroids

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...268..131h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 268, no. 1, p. 131-136.

Astronomy and Astrophysics

Astrophysics

12

Accretion Disks, Gravitational Effects, Hot Stars, Nuclear Astrophysics, Stellar Rotation, Toroids, Stellar Luminosity, Stellar Models, Stellar Structure, Stellar Temperature

Scientific paper

We solved structures of self-gravitating toroidal stars, in which the temperature is high enough for nuclear burnings to occur. For a pseudobarotropic toroidal star, we found that the maximum temperature can exceed 10 exp 9 K for some models, although there is a critical value for it within the toroid beyond which no equilibrium states exist. The maximum luminosity is found to exceed the Eddington luminosity considerably. Since the maximum temperature is the key quantity to judge which kind of nuclear burning can occur, the high temperature inside toroidal stars suggests the occurrence of significant amounts of nuclear reactions. Because essential features of toroidal stars seem to be common to accretion disks, one can also expect the possibility of appreciable nucleosynthesis inside thick accretion disks.

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