First simultaneous multi-wavelength observations of the black hole candidate IGR J17091−3624 - ATCA, INTEGRAL, Swift, and RXTE views of the 2011 outburst
J. Rodriguez, S. Corbel, I. Caballero, J. A. Tomsick, T. Tzioumis, A. Paizis, M. Cadolle Bel and E. Kuulkers