Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...207l.101c&link_type=abstract
Astrophysical Journal, vol. 207, July 15, 1976, pt. 2, p. L101-L104.
Astronomy and Astrophysics
Astrophysics
34
Electron Clouds, Globular Clusters, Light Curve, X Ray Sources, Compton Effect, Monte Carlo Method, Reverberation, Time Response, X Ray Scattering
Scientific paper
It is shown that the shape and spectral evolution of the giant X-ray bursts from the source 3U 1820-30 can be explained by Compton scattering of a short, intense X-ray pulse in a cloud surrounding the source. Pulse shapes due to Thomson scattering of an X-ray burst in an electron cloud were calculated for the (1) optically thin case on the assumption of one scattering per photon, (2) intermediate case with optical depth of about unity, and (3) optically thick case where the process is regarded as diffusion of photons through a uniform sphere. For the intermediate case, the effects of the reverberation were determined explicitly by Monte Carlo calculation. For an optical depth of 3, square pulse duration of 2 sec, characteristic cloud radius of 70,000 km, characteristic cloud density of 4 times 10 to the 14th per cu cm, and temperature of 5-30 keV, the calculations give a reasonably accurate description of X-ray bursts from 3U 1820-30. The scattering model does not imply the existence of a supermassive, central black hole.
No associations
LandOfFree
X-ray reverberations and the giant X-ray bursts 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 X-ray reverberations and the giant X-ray bursts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray reverberations and the giant X-ray bursts will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-939048