NDLI: First simultaneous multi-wavelength observations of the black hole candidate IGR J17091−3624 — ATCA, INTEGRAL, Swift, and RXTE views of the 2011 outburst

Content Provider	EDP Sciences
Author	J. Rodriguez S. Corbel I. Caballero J. A. Tomsick T. Tzioumis A. Paizis M. Cadolle Bel E. Kuulkers
Abstract	We present the results of the first four (quasi-)simultaneous radio (ATCA), X-ray (Swift, RXTE), and γ-ray (INTEGRAL) observations of the black hole candidate IGR J17091−3624, performed in February and March 2011. The X-ray analysis shows that the source was in the hard state, and then it transited to a soft intermediate state. We study the correlated radio/X-ray behaviour of this source for the first time. The radio counterpart to IGR J17091−3624 was detected during all four observations with the ATCA. In the hard state, the radio spectrum is typical of optically thick synchrotron emission from a self-absorbed compact jet. In the soft intermediate state, the detection of optically thin synchrotron emission is probably due to a discrete ejection event associated with the state transition. The position of IGR J17091−3624 in the radio versus X-ray luminosity diagram (aka fundamental plane) is compatible with that of the other black hole sources for distances greater than 11 kpc. IGR J17091−3624 also appears as a new member of the few sources that show a strong quenching of radio emission after the state transition. Using the estimated luminosity at the spectral transition from the hard state, and for a typical mass of 10 M_{⊙_{, we estimate a distance to the source between ~11 and ~17 kpc, compatible with the radio behaviour of the source.}}
Page Count	5
File Format	HTM / HTML PDF
ISSN	00046361
Alternate Webpage(s)	https://www.aanda.org/articles/aa/abs/2011/09/aa17511-11/aa17511-11.html
e-ISSN	14320746
Journal	Astronomy & Astrophysics
Volume Number	533
DOI	10.1051/0004-6361/201117511
Language	English
Publisher	EDP Sciences
Publisher Date	2011-09-01
Access Restriction	Open
Rights Holder	© ESO, 2011
Subject Keyword	accretion, accretion disks X-rays: binaries radio continuum: stars stars: individual: IGR J1709-8722;3624 accretion, accretion disks / X-rays: binaries / radio continuum: stars / stars: individual: IGR J1709-8722;3624
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

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