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First INTEGRAL observations of GRS 1915+105

First INTEGRAL observations of GRS 1915+105
First INTEGRAL observations of GRS 1915+105
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.
X-rays, binaries -- X-rays, GRS 1915+105
L415-L419
Hannikainen, D.C.
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Kaiser, Christian R.
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Vilhu, 0.
0d2fc13c-93c0-4a23-95b3-298119c17adb
Rodriguez, J.
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Brandt, S.
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Westergaard, N.J.
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Lund, N.
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Mocoeur, I.
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Durouchoux, Ph.
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Belloni, T.
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Castro-Tirado, A.
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Charles, P.A.
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Dean, A.J.
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Fender, R.P.
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Feroci, M.
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Hakala, P.
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Hunstead, R.W.
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King, A.
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Mirabel, I.F.
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Pooley, G.G.
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Poutanen, J.
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Wu, K.
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Zdziarski, A.A.
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Hannikainen, D.C.
75e8f67a-ed96-44d1-aee8-6ea2ea7889c4
Kaiser, Christian R.
28e00576-1e5b-47f1-b24c-fa10689717ab
Vilhu, 0.
0d2fc13c-93c0-4a23-95b3-298119c17adb
Rodriguez, J.
0c2b2628-3eb1-405f-abf7-ed3ed9562e4e
Brandt, S.
da92dfbe-067a-4a49-af17-893ea989e8b1
Westergaard, N.J.
75fc60c3-f907-4aff-be95-c8bfd516f7ab
Lund, N.
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Mocoeur, I.
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Durouchoux, Ph.
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Belloni, T.
a6a0a7f0-68d9-411a-97ee-75479ce1aeac
Castro-Tirado, A.
40bf2128-077a-4654-82c6-1b91a9ecf6f9
Charles, P.A.
0429b380-0754-4dc1-8def-885c7fa6a086
Dean, A.J.
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Fender, R.P.
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Feroci, M.
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Hakala, P.
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Hunstead, R.W.
1866ce9c-c2bb-41e3-8030-a1c0f36291fe
King, A.
460f716f-e5d7-4962-83a8-6c5c04bd067a
Mirabel, I.F.
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Pooley, G.G.
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Poutanen, J.
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Wu, K.
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Zdziarski, A.A.
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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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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
DOI: doi:10.1051/0004-6361:20031444
PURE UUID: d1ad3178-3a6e-4e15-aeb2-d70f15f60f9c

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Date deposited: 03 Mar 2005
Last modified: 15 Mar 2024 05:31

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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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