In this catalogue, published in the journal Astronomy & Astrophysics, we present results from 15 years of gamma-ray burst observations with H.E.S.S., carried out between 2004 and 2019. While we did not detect gamma-ray emission from any of the bursts in the analysed sample, our observations help us to constrain the ability of these powerful events to produce very-high-energy gamma rays – and what distinguishes them from the ones that we successfully detected already (see here or here). We are constantly on the hunt for the next detection!

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Journal reference: Astronomy & Astrophysics 707, A382 (2026)