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).

Download

[img] Other
Download (505b)

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
ePrint ID: 14785
Date Deposited: 03 Mar 2005
Last Modified: 27 Mar 2014 18:05
URI: http://eprints.soton.ac.uk/id/eprint/14785

Actions (login required)

View Item View Item

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics