Estimation of spin of the black hole from QPO frequency

Details Estimation of spin of the black hole from QPO frequency Estimation of spin of the black hole from QPO frequency

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1053..349m&link_type=abstract

OBSERVATIONAL EVIDENCE FOR BLACK HOLES IN THE UNIVERSE: Proceedings of the 2nd Kolkata Conference on Observational Evidence for

Physics

Galactic Nuclei, Circumnuclear Matter, And Bulges, Hydrodynamics, Infall, Accretion, And Accretion Disks

Scientific paper

In the present study, we have considered viscosous accretion flow around a rotating black hole. We have used Pseudo-Kerr geometry in this case for simplicity and to incorporate effect of rotation of the black hole. We have studied parameters space representing shocks waves for various Kerr and viscosity parameters.
The extreme possibilities of the shocks and its oscillations with time give the higher frequency QPOs. We have showed that the viscosity of the flow and spin of the black hole enhances QPO frequency while increasing mass reduces it down. An estimation of the spin of the black hole is presented from extreme possibilities of QPO fequencies.

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