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Astrophysics > High Energy Astrophysical Phenomena

arXiv:2108.02556 (astro-ph)
[Submitted on 5 Aug 2021]

Title:Detection of extended TeV emission around the Geminga pulsar with H.E.S.S

Authors:A. M. W. Mitchell, S. Caroff, J. Hinton, L. Mohrmann (for the H.E.S.S. collaboration)
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Abstract:Highly extended gamma-ray emission around the Geminga pulsar was discovered by Milagro and verified by HAWC. Despite many observations with Imaging Atmospheric Cherenkov Telescopes (IACTs), detection of gamma-ray emission on angular scales exceeding the IACT field-of-view has proven challenging. Recent developments in analysis techniques have enabled the detection of significant emission around Geminga in archival data with H.E.S.S.. In 2019, further data on the Geminga region were obtained with an adapted observation strategy. Following the announcement of the detection of significant TeV emission around Geminga in archival data, in this contribution we present the detection in an independent dataset. New analysis results will be presented, and emphasis given to the technical challenges involved in observations of highly extended gamma-ray emission with IACTs.
Comments: 8 pages, 4 figures, Proceedings of the 37th International Cosmic Ray Conference (ICRC2021)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:2108.02556 [astro-ph.HE]
  (or arXiv:2108.02556v1 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.2108.02556
Journal reference: PoS(ICRC2021)780

Submission history

From: Alison Mitchell [view email]
[v1] Thu, 5 Aug 2021 12:22:09 UTC (2,227 KB)
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