Spectral Signature of Advective Accretion Flows

Details Spectral Signature of Advective Accretion Flows Spectral Signature of Advective Accretion Flows

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005tmgm.meet.1379z&link_type=abstract

The Tenth Marcel Grossmann Meeting. Proceedings of the MG10 Meeting held at Brazilian Center for Research in Physics (CBPF), Rio

Physics

Scientific paper

The effects of bulk motion comptonization on the spectral formation in a converging flow onto a black hole are discussed and new results are presented. The problem has been tackled by means of both a fully relativistic, angle-dependent trasfer code and a semi-analytical, diffusion-approximation method.
We find that a power-law high-energy tail is a ubiquitous feature in converging flows and that the two approaches produce consistent results at large enough accretion rates, when photon diffusion holds. The photon index in the tail is found to be largely independent on the spatial distribution of soft seed photons when the accretion rate is either quite low (< 5 in Eddington units) or sufficiently high (> 10). Our analysis confirms that a hard tail with photon index Γ < 3 is produced by the up-scattering of primary photons onto infalling electrons if the central object is a black hole.

Affiliated with

Also associated with

No associations

Rating

Spectral Signature of Advective Accretion Flows 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 Spectral Signature of Advective Accretion Flows, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral Signature of Advective Accretion Flows will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-833860