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).
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Description/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.
| Item Type: | Article |
|---|---|
| Related URLs: | |
| Keywords: | X-rays, binaries -- X-rays, GRS 1915+105 |
| Subjects: | Q Science > QB Astronomy |
| Divisions: | University Structure - Pre August 2011 > School of Physics and Astronomy > Astronomy and Space Science |
| Item ID: | 14785 |
| Date Deposited: | 03 Mar 2005 |
| Last Modified: | 01 Jun 2011 08:24 |
| Contributors: | Hannikainen, D.C. (Author) Kaiser, Christian R. (Author) Vilhu, 0. (Author) Rodriguez, J. (Author) Brandt, S. (Author) Westergaard, N.J. (Author) Lund, N. (Author) Mocoeur, I. (Author) Durouchoux, Ph. (Author) Belloni, T. (Author) Castro-Tirado, A. (Author) Charles, P.A. (Author) Dean, A.J. (Author) Fender, R.P. (Author) Feroci, M. (Author) Hakala, P. (Author) Hunstead, R.W. (Author) King, A. (Author) Mirabel, I.F. (Author) Pooley, G.G. (Author) Poutanen, J. (Author) Wu, K. (Author) Zdziarski, A.A. (Author) |
| Date: | 2003 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/14785 |
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