“School of Astronomy”
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| Paper IPM / Astronomy / 12529 |
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| Abstract: | |||||||
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We investigate the effect of self-gravity on the equilibrium structure of a thick non-rotating disk
around a central object by the self-similar method. We introduce three dimensionless variables
Csg, Ct
and Ck that indicate the relative importance of self-gravity, thermal energy and kinetic
energy, respectively. We study the effect of each of them on the structure of the disk. Our selfsimilar solutions show that the self-gravity modifies the structure of the disk. We find out by
increasing the ratio of disk mass to the central object mass, the disk becomes thinner. Our results
show that increasing kinetic and thermal energies have similar effects on the structure of the disk
and make it thicker.
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