Where do Accretion Disks Around Black Holes End?

Details Where do Accretion Disks Around Black Holes End? Where do Accretion Disks Around Black Holes End?

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..427..104a&link_type=abstract

Accretion and Ejection in AGN: a Global View. Proceedings of a conference held June 22-26, 2009 in Como, Italy. Edited by Laura

Physics

Scientific paper

Accretion disks around (supermassive) black holes act as "machines" which extract gravitational energy. In fact, the observed radiation allows to sample the physical conditions very close to the event horizon. For a test particle, the innermost stable circular orbit (ISCO) is located at 3 rS for a non-rotating hole (Schwarzschild metrics; at smaller radii for a rotating black hole). This ISCO is usually identified with the inner edge of the accretion disk. For a given black hole mass, it allows, in principle, to determine the Kerr parameter. In "real life," however, we deal not with test particles but with a viscous flow, which introduces additional forces. We have calculated the location of the inner edge in a more realistic environment. The results show that the true inner edge of the disk is no longer located at the ISCO, when radial advection of energy is taken into account with a careful treatment of the transonic nature of the flow.

Affiliated with

Also associated with

No associations

Rating

Where do Accretion Disks Around Black Holes End? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Where do Accretion Disks Around Black Holes End?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Where do Accretion Disks Around Black Holes End? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1116837