Astronomy and Astrophysics – Astronomy
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...426l..11j&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 426, no. 1, L11-L14
Astronomy and Astrophysics
Astronomy
15
Black Holes (Astronomy), Electrons, Gamma Ray Astronomy, Gamma Ray Spectra, Gamma Rays, Photons, Stellar Spectra, X Ray Stars, Astronomical Spectroscopy, Gamma Ray Spectrometers
Scientific paper
The Comptonization of soft photons by thermal electrons (kT approximately equals 20-100 KeV) provides a good description of the hard X-ray spectra of several galactic black hole candidates. However, new data with good statistics above 200-300 keV from the SIGMA telescope and the Oriented Scintillation Spectrometer Experiment (OSSE) experiment lead to the conclusion that the spectral shapes may be more complex. We propose a scenario based on proton-proton pi0 decay emission, which produces an additional spectral component extending up to a few MeV, and derive some parameters of this emission. We discuss the cases of three sources on the black hole candidate list: the well-known HMXB Cygnus X-1, the bright X-ray transient Nova Persei (GRS 0418+328) and the LMXB GX 339-4.
Jourdain Elisabeth
Roques Jean Pierre
No associations
LandOfFree
Pi0 decay around black hole candidates: A spectral component above 200 keV 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 Pi0 decay around black hole candidates: A spectral component above 200 keV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pi0 decay around black hole candidates: A spectral component above 200 keV will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-885086