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T: Fachverband Teilchenphysik

T 106: Gamma Astronomy III

T 106.5: Vortrag

Freitag, 20. März 2026, 10:00–10:15, KS 00.005

Probing Energy-dependent Morphology in the Pulsar Wind Nebula HESS J1303-631 — •Maximilian Bohle, Alison Mitchell, and Katharina Egg — Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics, Nikolaus-FiebigerStr. 2, 91058 Erlangen, Germany

Pulsar Wind Nebulae (PWN) exhibit complex morphologies that are often known to be energy-dependent. These morphological variations across energy bands can provide useful insights into the underlying physical mechanisms. In this work, detailed morphological studies of the very-high-energy gamma-ray source HESS J1303-631 are presented, using H.E.S.S. data analysed with the open source software gammapy. Previous studies based on more limited data found the source to be significantly energy-dependent. This energy-dependent nature is probed in more detail by analysing over 20 years of data for several energy ranges and therefore quantifying its morphological energy-dependency. HESS J1303-631 is found to be consistently elongated and highly extended, yet the results suggest that HESS J1303-631 exhibits a weaker energy dependence than previously reported.

Keywords: Pulsar Wind Nebulae; Energy-dependent morphology; Gamma Astronomy; HESS