H.E.S.S. Collaboration
April 8, 2026

New publication on a flare of the blazar PKS 0903–57

April 8, 2026

In a new publication, published in the Journal of High Energy Astrophysics, we explore a multi-wavelength outburst of the blazar PKS 0903-57 that was observed in 2020. Through the detailed observations with the H.E.S.S. telescopes it was possible to identify variability on the time scale of a few hours. A leptonic modelling of the emission region reveals low magnetization, suggesting shock acceleration is the likely driver of the emission.

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Journal reference: Journal of High Energy Astrophysics 53, 100599 (2026)