PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Gamma-Ray Astronomy. GA-galactic
VHE gamma-ray study of the composite SNR MSH 15-52 with H.E.S.S.
M. Tsirou,* Y. Gallant, R. Zanin, R. Terrier on behalf of the H.E.S.S. collaboration
*corresponding author
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Pre-published on: August 16, 2017
Published on: August 03, 2018
Abstract
VHE gamma-ray study of the composite SNR MSH 15-52 with H.E.S.S.

M. Tsirou, Y.A. Gallant, R. Zanin , R. Terrier on behalf of the H.E.S.S. Collaboration



The composite supernova remnant (SNR) MSH 15-52 comprises the bright X-ray pulsar wind nebula (PWN) of PSR B1509-58, surrounded by a shell which is a prominent object in the radio domain. H.E.S.S. had discovered extended very-high-energy (VHE) gamma-ray emission coincident with the PWN. With additional H.E.S.S. observations performed since the 2005 discovery paper, we study the properties of the emission in greater detail. We compare the VHE gamma-ray morphology of the PWN with that in synchrotron emission, obtained from archival X-ray observations, and discuss the implications on the magnetic field in the nebula. In particular, we discuss potential extended gamma-ray emission beyond the X-ray PWN, which may allow for conclusions on scenarios of PWNe as sources of cosmic ray electrons and positrons.
DOI: https://doi.org/10.22323/1.301.0681
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