IGR J17544–2619 in Depth With Suzaku: Direct Evidence for Clumpy Winds in a Supergiant Fast X-ray Transient

IGR J17544–2619 in Depth With Suzaku: Direct Evidence for Clumpy Winds in a Supergiant Fast X-ray Transient

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...

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Veröffentlicht in:The Astrophysical journal 2009-12, Vol.707 (1), p.243-249
Hauptverfasser: Rampy, Rachel A, Smith, David M, Negueruela, Ignacio
Format: Artikel
Sprache:eng
Schlagworte:
ABSORPTION
Astronomy
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Earth, ocean, space
ELECTROMAGNETIC RADIATION
Exact sciences and technology
IONIZING RADIATIONS
LUMINOSITY
NEUTRON STARS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SATELLITES
SORPTION
STARS
TRANSIENTS
X RADIATION
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Beschreibung
Zusammenfassung: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 104 in luminosity and gives a detailed look at SFXT behavior.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/707/1/243