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T: Fachverband Teilchenphysik

T 84: Gamma Astronomy II

T 84.3: Vortrag

Donnerstag, 19. März 2026, 16:45–17:00, KS 00.005

Analysis of the PWNe in the Kookaburra Region with Fermi-LAT and H.E.S.S. — •Lukas Großpietsch, Giovanni Cozzolongo, and Alison Mitchell for the H.E.S.S. collaboration — Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen 91052, Germany

The wings of the Kookaburra region host the two extended very-high-energy gamma-ray sources HESS J1420-607 and HESS J1418-609, forming a rare complex environment of two adjacent pulsar wind nebulae (PWNe) shaped by energetic pulsars and asymmetric ambient conditions. This makes the region a valuable target for studying particle acceleration, transport, and energy losses in evolved PWNe. In this work, we present an analysis of the region using a combination of recent and archival observations from the H.E.S.S. array together with Fermi-LAT data. Advanced background estimation and analysis techniques complement the upgraded H.E.S.S. system to enable a refined investigation of morphology and emission processes in the very-high-energy gamma-ray range. These findings aim to deepen our understanding of the interplay of pulsar-driven outflows and their surrounding medium in the Kookaburra complex.

Keywords: Pulsar Wind Nebula; Gamma rays; Gammapy