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Astrophysics > High Energy Astrophysical Phenomena

arXiv:2108.13005 (astro-ph)
[Submitted on 30 Aug 2021]

Title:The gamma-ray emission from 3HWC J1928+178

Authors:Armelle Jardin-Blicq (on behalf of the HAWC Collaboration)
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Abstract:The gamma-ray source 3HWC J1928+178, discovered by HAWC, is coincident with the 82 kyr pulsar PSR J1928+1746, located 4 kpc away. It has not been reported by any Imaging atmospheric Cherenkov Telescope (IACT), until the recent detection of emission from this region by H.E.S.S., using an analysis adapted to extended sources. No counterpart in GeV gamma-rays from Fermi-LAT data or in X-ray has been reported so far. In this contribution, I give the multiwavelength context of the region surrounding 3HWC J1928+178 and present a multi-component model derived using the Multi-Mission Maximum Likelihood framework (3ML). I explore the possibility to model the gamma-ray emission of 3HWC J1928+178 by an extended source with continuous diffuse emission. Together with the age of the pulsar and its extended nature, it may indicate a transition from a pulsar wind nebulae to a halo, where the electrons have started to cool and diffuse away from the source.
Comments: Submitted at the 37th International Cosmic Ray conference (ICRC 2021) under the reference PoS(ICRC2021)821
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:2108.13005 [astro-ph.HE]
  (or arXiv:2108.13005v1 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.2108.13005
Journal reference: Proceedings of science 2021

Submission history

From: Armelle Jardin-Blicq [view email]
[v1] Mon, 30 Aug 2021 06:24:12 UTC (761 KB)
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