Cygnus X-3 in extreme soft state

Details Cygnus X-3 in extreme soft state Cygnus X-3 in extreme soft state

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atel.1081....1s&link_type=abstract

The Astronomer's Telegram, #1081

Astronomy and Astrophysics

Astronomy

2

X-Ray, Binaries

Scientific paper

INTEGRAL observed the Cygnus region 2007-05-21T09:45 until 23:37 UT. During this observation the HMXB Cyg X-3 was within the field of view of IBIS and JEM-X1 for 9.5 ks. JEM-X1 data show a high state with a flux of (9.4 ± 1.1)E-09 erg/cm**2/sec (551 mCrab) and (0.34 ± 0.08)E-09 erg/cm**2/sec (60 mCrab) in the 3-10 and 10-20 keV energy range, respectively. The spectrum is well represented by a blackbody model with temperature kT = (1.15 ± 0.05) keV.

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