Journal
ASTROPHYSICAL JOURNAL
Volume 707, Issue 1, Pages 243-249Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/707/1/243
Keywords
binaries: general; stars: individual (IGR J17544-2619); stars: neutron; stars: winds, outflows; supergiants; X-rays: binaries
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Funding
- NASA [NNX08AL35G]
- Spanish Ministerio de Ciencia e Innovacion (MICINN) [AYA2008-06166-C03-03, CSD2006-70]
- NASA [NNX08AL35G, 99073] Funding Source: Federal RePORTER
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We present direct evidence for dense clumps of matter in the companion wind in a Supergiant Fast X-ray Transient (SFXT) binary. This is seen as a brief period of enhanced absorption during one of the bright, fast flares that distinguish these systems. The object under study was IGR J17544-2619, and a total of 236 ks of data were accumulated with the Japanese satellite Suzaku. The activity in this period spans a dynamic range of almost 10(4) in luminosity and gives a detailed look at SFXT behavior.
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