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

Schüssler, F.; Bordas Coma, Pol; Chadwick, P. M.; Dickinson, H.; Ernenwein, J. -P.; Collaboration, for the H. E. S. S.

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Conference Paper

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

MPS-Authors

/persons/resource/persons119022

Bordas Coma, Pol
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

1509.03039.pdf
(Preprint), 4MB

Supplementary Material (public)

There is no public supplementary material available

Citation

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.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-0D7D-1

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.