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First INTEGRAL observations of GRS 1915+105

Hannikainen, D.C., Kaiser, Christian R., Vilhu, 0., Rodriguez, J., Brandt, S., Westergaard, N.J., Lund, N., Mocoeur, I., Durouchoux, Ph., Belloni, T., Castro-Tirado, A., Charles, P.A., Dean, A.J., Fender, R.P., Feroci, M., Hakala, P., Hunstead, R.W., King, A., Mirabel, I.F., Pooley, G.G., Poutanen, J., Wu, K. and Zdziarski, A.A. (2003) First INTEGRAL observations of GRS 1915+105 Astronomy & Astrophysics, 411, L415-L419. (doi:10.1051/0004-6361:20031444).

Record type: Article

Abstract

We present data from the first of six monitoring Open Time observations of GRS 1915+105 undertaken with the orbiting INTEGRAL satellite. The source was clearly detected with all three X-ray and gamma-ray instruments on board. GRS 1915+105 was in a highly variable state, as demonstrated by the JEM X-2 and ISGRI lightcurves. These and simultaneous RXTE/PCA lightcurves point to a novel type of variability pattern in the source. In addition, we fit the combined JEM X-2 and ISGRI spectrum between 3-300 keV with a disk blackbody + powerlaw model leading to typical parameter values found earlier at similar luminosity levels. A new transient, IGR J19140+098, was discovered during the present observation.

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More information

Published date: 2003
Keywords: X-rays, binaries -- X-rays, GRS 1915+105

Identifiers

Local EPrints ID: 14785
URI: http://eprints.soton.ac.uk/id/eprint/14785
PURE UUID: d1ad3178-3a6e-4e15-aeb2-d70f15f60f9c

Catalogue record

Date deposited: 03 Mar 2005
Last modified: 17 Jul 2017 16:53

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Contributors

Author: D.C. Hannikainen
Author: Christian R. Kaiser
Author: 0. Vilhu
Author: J. Rodriguez
Author: S. Brandt
Author: N.J. Westergaard
Author: N. Lund
Author: I. Mocoeur
Author: Ph. Durouchoux
Author: T. Belloni
Author: A. Castro-Tirado
Author: P.A. Charles
Author: A.J. Dean
Author: R.P. Fender
Author: M. Feroci
Author: P. Hakala
Author: R.W. Hunstead
Author: A. King
Author: I.F. Mirabel
Author: G.G. Pooley
Author: J. Poutanen
Author: K. Wu
Author: A.A. Zdziarski

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