Hybrid modelization of the high-energy broad-band spectra of Cygnus X-1 observed by INTEGRAL

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

We report high-energy spectral results on Cygnus X-1 obtained with INTEGRAL which extensively observed this confirmed black hole from 2002 November to 2004, collecting a total of 1.5 Ms of data. We compare the spectral properties of the source in three distinct observed spectral states (hard, soft and intermediate) over the 5 keV--1 MeV energy range. Spectral changes in the hard and soft components occur together with Fe line and reflection evolutions. Our results give new insights on the physical changes that took place in the system (disc and corona) at almost constant luminosity during spectral transitions. In particular, we observed in 2003 June a high-energy tail at several hundred keV in excess of the thermal Comptonization model suggesting the presence of an additional non-thermal component.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Hybrid modelization of the high-energy broad-band spectra of Cygnus X-1 observed by INTEGRAL 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 Hybrid modelization of the high-energy broad-band spectra of Cygnus X-1 observed by INTEGRAL, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid modelization of the high-energy broad-band spectra of Cygnus X-1 observed by INTEGRAL will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1480345

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.