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  Simultaneous H.E.S.S. and RXTE observations of the microquasars GRS 1915+105, Circinus X-1 and V4641 Sgr

Schüssler, F., Bordas Coma, P., Chadwick, P. M., Dickinson, H., Ernenwein, J.-.-P., & Collaboration, f. t. H. E. S. S. (2016). Simultaneous H.E.S.S. and RXTE observations of the microquasars GRS 1915+105, Circinus X-1 and V4641 Sgr. Proceedings of Science, ICRC2015: 727. Retrieved from http://arxiv.org/abs/1509.03039.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002C-0D7D-1 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-002C-0D7E-0
Genre: Conference Paper

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Schüssler, F., Author
Bordas Coma, Pol1, Author           
Chadwick, P. M., Author
Dickinson, H., Author
Ernenwein, J. -P., Author
Collaboration, for the H. E. S. S., Author
Affiliations:
1Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              

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Free keywords: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 MPINP: HESS - Abteilung Hofmann
 Abstract: Microquasars, Galactic binary systems showing extended and variable radio emission, are potential gamma-ray emitters. Indications of gamma-ray transient episodes have been reported in at least two systems, Cyg X-1 and Cyg X-3. The identification of additional gamma-ray emitting microquasars is key for a better understanding of these systems. Very-high-energy gamma-ray emission from microquasars has been predicted to happen during periods of transient outbursts potentially connected with the formation of a jet-like outflow. Contemporaneous observations using the H.E.S.S. telescope array and the RXTE satellite were obtained on three microquasars: GRS 1915+105, Circinus X-1 and V4641 Sgr with the aim of detecting a broadband flaring event in the very-high-energy gamma-ray and X-ray bands. We report here on the analysis of these data for each system, including a detailed X-ray analysis assessing the location of the sources in a hardness-intensity diagram during the observations. Finally we discuss the derived upper limits on their very-high-energy gamma-ray flux.

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 Dates: 2016
 Publication Status: Published online
 Pages: In Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands
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 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 1509.03039
URI: http://arxiv.org/abs/1509.03039
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Title: Proceedings of Science
  Other : PoS
Source Genre: Journal
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Pages: - Volume / Issue: ICRC2015 Sequence Number: 727 Start / End Page: - Identifier: ISSN: 1824-8039
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000018850_1