Cygnus X-1: X-ray Emission Mechanism and Geometry

Details Cygnus X-1: X-ray Emission Mechanism and Geometry Cygnus X-1: X-ray Emission Mechanism and Geometry

1997-11-14

arxiv.org/abs/astro-ph/9711166v1

Astronomy and Astrophysics

Astrophysics

2 pages. Proceedings of IAU Symposium 188 ``The Hot Universe'', Kyoto, Japan, August 26-30, 1997

Scientific paper

We summarize recent observations of Cyg X-1 during its 1996 state transition. The results favor an emission geometry with a central optically thin corona surrounded by an optically thick, geometrically thin accretion disk. As the soft state is approached, the inner edge of the disk moves closer to the black hole, and the corona shrinks, perhaps due to more efficient cooling. Soft X-rays are from the innermost disk, and inverse-Comptionization by the corona appears to be responsible for the hard X-ray emission. Both Compton reflection and an iron emission line have been observed in both states. They are likely to originate in the inner region of the disk. Also briefly discussed is the theoretical effort to simultaneously model the observed spectral and temporal X-ray properties of Cyg X-1.

Affiliated with

Also associated with

No associations

Rating

Cygnus X-1: X-ray Emission Mechanism and Geometry 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 Cygnus X-1: X-ray Emission Mechanism and Geometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cygnus X-1: X-ray Emission Mechanism and Geometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-281186