Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2404....1k&link_type=abstract
The Astronomer's Telegram, #2404
Astronomy and Astrophysics
Astronomy
X-Ray, Request For Observations, Binaries, Black Holes, Transients
Scientific paper
MAXI/GSC has observed a sharp increase of the soft (<4 keV) X-ray flux from Cyg X-3 on 2010 January 24 after a slow gradual increase since 2010 January 20. The 1.5-4 keV X-ray flux tripled from January 19 to January 24 while the hard (10-20 keV) X-ray flux stayed almost constant, suggesting that the source is in the transition from the hard spectral state to a soft state. As the gamma-ray and radio flares have been observed after similar state transitions (Tavani et al.
Daikyuji Arata
Eguchi Shinto
Hiroi Kazuo
Ishikawa Masaharu
Ishiwata Ryosuke
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