Astrophysics and Space Science, ( ISI ), Volume (358), No (11), Year (2015-6) , Pages (1-11)
Title : ( Local stability of self-gravitating disks in f (R) gravity )
Authors: Mahmood Roshan , Shahram Abbassi ,File: 
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Full TextAbstract
In the framework of metric f (R) gravity, we find the dispersion relation for the propagation of tightly wound spiral density waves in the surface of rotating, selfgravitating disks. Also, new Toomre-like stability criteria for differentially rotating disks has been derived for both fluid and stellar disks.
