IGR J17544-2619 IN DEPTH WITH SUZAKU: DIRECT EVIDENCE FOR CLUMPY WINDS IN A SUPERGIANT FAST X-RAY TRANSIENT

被引：44
|
作者：
Rampy, Rachel A. [1 ,2 ]
Smith, David M. [1 ,2 ]
Negueruela, Ignacio [3 ]
机构：
[1] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA
[2] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
[3] Univ Alicante, Dept Fis Ingn Sistemas & Teoria Senal, E-03080 Alicante, Spain
来源：
ASTROPHYSICAL JOURNAL | 2009年 / 707卷 / 01期
关键词：
binaries: general; stars: individual (IGR J17544-2619); stars: neutron; stars:; winds; outflows; supergiants; X-rays: binaries; XMM-NEWTON OBSERVATIONS; INTEGRAL OBSERVATIONS; SAX J1818.6-1703; XTE J1739-302; NEUTRON-STAR; DISCOVERY; BINARIES; PERIOD; J16479-4514; J11215-5952;
D O I：
10.1088/0004-637X/707/1/243
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
引用
收藏
页码：243 / 249
页数：7
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