Mahmood Roshan, Shahram Abbassi
Published 2015-06-02Version 1
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, self-gravitating disks. Also, new Toomre-like stability criteria for differentially rotating disks has been derived for both fluid and stellar disks.
Comments: To appear in Astrophysics and Space Science
Local Stability of Galactic Discs in Modified Dynamics
Re-growth of stellar disks in mature galaxies: The two component nature of NGC 7217 revisited with VIRUS-W
Local stability criterion for self-gravitating disks in modified gravity
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