Jet-driven disk accretion in low luminosity AGN?*

Details Jet-driven disk accretion in low luminosity AGN?* Jet-driven disk accretion in low luminosity AGN?*

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.311..257j&link_type=abstract

Astrophysics and Space Science, Volume 311, Issue 1-3, pp. 257-262

Physics

5

Accretion, Accretion Disks, Black Hole Physics, (Magnetohydrodynamics:) Mhd, Radiation Mechanisms: Thermal, Nonthermal, Galaxies: Individual (M87), Galaxies: Jets

Scientific paper

We explore an accretion model for low luminosity AGN (LLAGN) that attributes the low radiative output to a low mass accretion rate, dot{M}a , rather than a low radiative efficiency. In this model, electrons are assumed to drain energy from the ions as a result of collisionless plasma microinstabilities. Consequently, the accreting gas collapses to form a geometrically thin disk at small radii and is able to cool before reaching the black hole. The accretion disk is not a standard disk, however, because the radial disk structure is modified by a magnetic torque which drives a jet and which is primarily responsible for angular momentum transport. We also include relativistic effects. We apply this model to the well known LLAGN M87 and calculate the combined disk-jet steady-state broadband spectrum. A comparison between predicted and observed spectra indicates that M87 may be a maximally spinning black hole accreting at a rate of ˜10-3 M &sun; yr-1. This is about 6 orders of magnitude below the Eddington rate for the same radiative efficiency. Furthermore, the total jet power inferred by our model is in remarkably good agreement with the value independently deduced from observations of the M87 jet on kiloparsec scales.

Affiliated with

Also associated with

No associations

Rating

Jet-driven disk accretion in low luminosity AGN?* 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 Jet-driven disk accretion in low luminosity AGN?*, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Jet-driven disk accretion in low luminosity AGN?* will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-825089