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Title: First INTEGRAL observations of GRS 1915+105
Authors: Hannikainen, D. C.
Vilhu, O.
Hakala, P.
Vilhu, O.
Rodriguez, J.
Rodriguez, J.
Mocœur, I.
Durouchoux, P.
Mirabel, I. F.
Brandt, S.
Westergaard, N. J.
Lund, N.
Belloni, T.
Castro-Tirado, A.
Charles, P. A.
Dean, A. J.
Kaiser, C. R.
Fender, R. P.
Feroci, M.
Hunstead, R. W.
King, A.
Pooley, G. G.
Poutanen, J.
Wu, K.
Zdziarski, A. A.
First Published: Nov-2003
Publisher: EDP Sciences for European Southern Observatory (ESO)
Citation: Astronomy & Astrophysics, 2003, 411 (1)
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.
DOI Link: 10.1051/0004-6361:20031444
ISSN: 0004-6361
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2003 ESO. Reproduced with permission from Astronomy & Astrophysics, © ESO.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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