In this publication, we report about the results from a comprehensive measurement campaign on the microquasar V4641 Sgr. Microquasars are fascinating objects that consist of a black hole and a companion star and that emit powerful jets. Gamma-ray emission from V4641 Sgr was reported previously by other experiments, however, the spatial structure of the emission was not well know so far. With H.E.S.S., we were able to resolve the emission better and found evidence for two separate, elongated components – an indication that the origin of the emission lies within the jets of the microquasar. V4641 Sgr was also featured in a recent Source of the Month article!

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Journal reference: Astronomy & Astrophysics 706, A8 (2026)