The INTEGRAL Galactic Bulge monitoring program: Spectral study

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INTEGRAL 2010_144.pdf (256.68 KB)

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https://pos.sissa.it/115/144

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https://doi.org/10.22323/1.115.0144
 http://hdl.handle.net/11603/29915

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UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
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UMBC Physics Department
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https://orcid.org/0000-0002-4656-6881

Date

2011-11-16

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conference papers and proceedings
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Citation of Original Publication

Barragan, Laura, Erik Kuulkers, Peter Kretschmar, Joern Wilms, Katja Pottschmidt, and Anne M. Lohfink. “The INTEGRAL Galactic Bulge Monitoring Program: Spectral Study.” In Proceedings of 8th INTEGRAL Workshop “The Restless Gamma-Ray Universe” — PoS(INTEGRAL 2010), 115:144. SISSA Medialab, 2011. https://doi.org/10.22323/1.115.0144.

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Abstract

The center of the Milky Way is a region crowded with X-ray binaries of all kinds: High Mass X-ray Binaries (HMXBs) and Low Mass X-ray Binaries (LMXBs) containing neutron stars or black holes as the compact objects of the binary systems. It then provides a wealth of information on different sources when observed with a wide-field-of-view instrument such as IBIS/ISGRI or JEM-X onboard INTEGRAL. The INTEGRAL Galactic bulge monitoring program was born with the aim of investigating the variability and the transient activity on time scales of days to weeks and months of these sources, in the soft as well as the hard X-ray band [1]. We present here the results of the spectral analysis for eight presistently bright sources in the Galactic bulge that are covered by IBIS/ISGRI and JEM-X simultaneously for the first 3 observing periods (from 2005-02-17 until 2006-03-01), namely 1A 1742−294, 1E 1740.7−2942, 4U 1722−30, GRS 1758−258, GX 3+1, GX 354−0, GX 5−1, and SLX 1744−299/300.