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arXiv · 2311.00861

The HAWC ultra-high-energy gamma-ray map with more than 5 years of data

Kelly Malone·José Andrés García González·Patrick Harding
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Abstract

In 2020, the HAWC Collaboration presented the first catalog of gamma-ray sources emitting above 56 TeV and 100 TeV. With nine sources detected, this was the highest-energy source catalog to date. Here, we present the results of re-analysis of the old data, along with additional data acquired since then. We use a new version of the reconstruction software with better pointing accuracy and improved gamma/hadron separation. We now see more than 25 sources above 56 TeV, with most sources being located in the Galactic plane. The vast majority of these seem to be leptonic pulsar wind nebulae, but some have been shown to have hadronic emission. We will show spectra and discuss possible emission mechanisms of some of the most interesting sources, including the ones the HAWC Collaboration considers PeVatron candidates.

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Kelly Malone, José Andrés García González, Patrick Harding. 2023-11-01. The HAWC ultra-high-energy gamma-ray map with more than 5 years of data. https://arxiv.org/abs/2311.00861

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