Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mgm..conf.1107c&link_type=abstract
"THE ELEVENTH MARCEL GROSSMANN MEETING On Recent Developments in Theoretical and Experimental General Relativity, Gravitation an
Astronomy and Astrophysics
Astronomy
Black Holes, Gamma-Ray Observations, Cygnus X-1, Gro J0422+32, Gro J1719-24, Gro J1655-40, Grs 1915+105
Scientific paper
The BATSE instrument aboard the Compton Gamma Ray Observatory monitored numerous astronomical sources, including the Galactic black holes Cygnus X-1, GRO J0422+32, GRO J1719-24, GRS 1915+105, and GRO J1655-40, almost continuously from 1991 to 2000 in the energy range 23-1798 keV. We present results for these five black holes from the full nine-year BATSE earth occultation database using the JPL data analysis package EBOP (Enhanced BATSE Occultation Package). Light curves in four broad energy bands with 1-day resolution are presented showing flux histories for each source over the nine years. Spectra during the high flux/outburst states and low flux/quiescent states for these objects are also presented. The differences in the spectra suggest that there may two different classes of Galactic black holes.
Anzalone E.
Case Gary L.
Cherry Michael L.
Ling James C.
Radocinski Robert G.
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