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Discovery of extended VHE gamma-ray emission from the asymmetric pulsar wind nebula in MSH 15-52 with H.E.S.S

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arxiv astro-ph/0504120 v1 pith:DNTJM63Y submitted 2005-04-05 astro-ph

Discovery of extended VHE gamma-ray emission from the asymmetric pulsar wind nebula in MSH 15-52 with H.E.S.S

H.E.S.S. Collaboration: F. Aharonian , et al This is my paper
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keywords emissionpulsaraxisdetectedenergygamma-raynebulaobserved
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The Supernova Remnant MSH 15-52 has been observed in very high energy (VHE) gamma-rays using the H.E.S.S. 4-telescope array located in Namibia. A gamma-ray signal is detected at the 25 sigma level during an exposure of 22.1 hours live time. The image reveals an elliptically shaped emission region around the pulsar PSR B1509-58, with semi-major axis 6' in the NW-SE direction and semi-minor axis 2' approximately. This morphology coincides with the diffuse pulsar wind nebula as observed at X-ray energies by ROSAT. The overall energy spectrum from 280 GeV up to 40 TeV can be fitted by a power law with photon index Gamma = 2.27 +/- 0.03(stat.) +/- 0.20(syst.). The detected emission can be plausibly explained by inverse Compton scattering of accelerated relativistic electrons with soft photons.

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Cited by 2 Pith papers

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  1. Joint X-ray and gamma-ray analysis at the photon level: Application to MSH 15-52

    astro-ph.HE 2026-07 conditional novelty 6.0

    A new pipeline demonstrates 3D, photon-event-level joint fits of eROSITA X-ray, H.E.S.S., and Fermi data for MSH 15-52.

  2. Hadronic Origin of Sub-PeV Gamma-Ray Emission from LHAASO J0621+3755

    astro-ph.HE 2026-01 unverdicted novelty 5.0

    Hadronic proton-proton interactions in a superdiffusive one-zone model with proton luminosity 0.14 of spin-down power and diffusion index 1.05 reproduce the 7-200 TeV gamma-ray spectrum from PSR J0622+3749 halo at amb...