Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2751....1g&link_type=abstract
The Astronomer's Telegram, #2751
Astronomy and Astrophysics
Astronomy
1
Radio, X-Ray, Binaries, Black Holes
Scientific paper
RXTE has performed pointed observations of Cyg X-1 on 2010-06-19/20, 2010-07-04, and 2010-07-19/20. Following the AGILE detections (ATel #2512, #2715) and subsequent observations indicating a softening of the source (Atel #2711, #2714, #2721, #2724, #2734) ending a years long hard state (Nowak et al., POS MQW7, 2008), we performed spectral and timing analysis of these observations. The X-ray spectrum can be well described by the sum of an absorbed broken power law and a black body.
Bodaghee Arash
Boeck Moritz
Grinberg Victoria
Kreykenbohm Ingo
Markoff Sera
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