Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atel.1061....1k&link_type=abstract
The Astronomer's Telegram, #1061
Astronomy and Astrophysics
Astronomy
2
X-Ray, Gamma Ray, Binaries, Transients
Scientific paper
Swift-BAT reports that the microquasar Cygnus X-3 appears to be re-entering the high-soft state that it left in early March 2007 (ATEL #1028). The BAT count rate in the 15-50 keV energy band has fallen from a high of 0.05 +/- 0.0025 counts/sec/cm^2 (220 +/- 11 mCrab) on March 15, 2007 to its current level of 0.01 +/- 0.004 counts/sec/cm^2 (50 mCrab +/- 20 mCrab) on April 24, 2007. At the current rate of decline we expect the flux to fall below 10 mCrab within a week.
Barbier Louis
Barthelmy Scott D.
Cummings Jay
Fenimore Edward E.
Gehrels Neil
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