Bonn 2010 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 93: Gammaastronomie II

T 93.8: Vortrag

Dienstag, 16. März 2010, 18:35–18:50, HG XVII

Describing Pulsar Wind Nebulae with a simple leptonic model — •Joachim Hahn¹, Stefan Hoppe¹, Kathrin Egberts², Wilfried Domainko¹, and Werner Hofmann¹ — ¹Max-Planck-Institut für Kernphysik, Heidelberg — ²Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck

In recent years, Cherenkov telescopes like e.g. H.E.S.S. have identified a large number of very-high-energy (VHE) gamma-ray sources as Pulsar wind nebulae (PWNe). The VHE-gamma-ray emission shows a rich diversity of spectral and spatial morphologies. Theoretical models can help to understand and interprete the observed source properties. A simple semi-analytical leptonic model describing VHE gamma-ray emission from PWNe will be presented. It assumes diffusion with radiative cooling as the transport mechanism for electrons and their interaction with radiative and interstellar magnetic fields as the origin of electromagnetic radiation. In the framework of this model, spectral and spatial properties of the expected VHE gamma-ray emission from single PWNe may be estimated.