Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-09-03
Astrophys.J. 582 (2003) 347
Astronomy and Astrophysics
Astrophysics
9 Latex pages including 5 figures and 1 table; Accepted for publication in Astrophysical Journal
Scientific paper
10.1086/344574
Two pseudo-Newtonian potentials, which approximate the angular and epicyclic frequencies of the relativistic accretion disk around rotating (and counter rotating) compact objects, are presented. One of them, the Logarithmically Modified Potential, is a better approximation for the frequencies while the other, the Second-order Expanded potential, also reproduces the specific energy for circular orbits in close agreement with the General Relativistic values. These potentials may be included in time dependent hydrodynamical simulations to study the temporal behavior of such accretion disks.
Misra Ranjeev
Mukhopadhyay Banibrata
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