H.E.S.S. VHE gamma-ray observations of the microquasar GRS 1915+105
A. Szostek, G. Dubus, F. Brun, M. de Naurois, (for the H.E.S.S., Collaboration)

TL;DR
This paper reports on H.E.S.S. telescope observations of the microquasar GRS 1915+105, exploring potential very high energy gamma-ray emissions linked to its jets and variability.
Contribution
First VHE gamma-ray observational campaign of GRS 1915+105, providing insights into its high-energy emission properties.
Findings
No significant VHE gamma-ray emission detected.
Constraints placed on gamma-ray flux from GRS 1915+105.
Results inform models of jet-related high-energy processes.
Abstract
GRS 1915+105 is a very well studied microquasar with a wide variety of temporal and spectral states. Multi-wavelength observations from radio to X-rays have uncovered clear relations between the variability in different bands. GRS 1915+105 is also well-known as a source of superluminal jets moving away from the core with true velocity <=0.9c. Non-thermal emission from the jets or their termination shock could extend to the VHE gamma-ray domain. GRS 1915+105 was observed with the H.E.S.S. telescope array between 2004 and 2008 for a total of 24 hours. We report on these observations and discuss our findings.
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Taxonomy
TopicsGamma-ray bursts and supernovae · Astrophysical Phenomena and Observations · Astrophysics and Cosmic Phenomena
