Pseudo‐Newtonian Potentials to Describe the Temporal Effects on Relativistic Accretion Disks around Rotating Black Holes and Neutron Stars | Zendy

Banibrata Mukhopadhyay | Zendy; Ranjeev Misra | Zendy

Open Access

Pseudo‐Newtonian Potentials to Describe the Temporal Effects on Relativistic Accretion Disks around Rotating Black Holes and Neutron Stars

Author(s) -

Banibrata Mukhopadhyay,

Ranjeev Misra

Publication year - 2003

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/344574

Subject(s) - physics , neutron star , accretion (finance) , accretion disc , angular velocity , astrophysics , classical mechanics , newtonian fluid , relativistic quantum chemistry , nuclear physics

Two pseudo-Newtonian potentials, which approximate the angular and epicyclicfrequencies of the relativistic accretion disk around rotating (and counterrotating) compact objects, are presented. One of them, the LogarithmicallyModified Potential, is a better approximation for the frequencies while theother, the Second-order Expanded potential, also reproduces the specific energyfor circular orbits in close agreement with the General Relativistic values.These potentials may be included in time dependent hydrodynamical simulationsto study the temporal behavior of such accretion disks.Comment: 9 Latex pages including 5 figures and 1 table; Accepted for publication in Astrophysical Journa

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