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Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - GRI - Gamma Ray Indirect
Spectral and Morphological Studies of the Very High Energy Gamma-Ray Source 2HWC J1825-134
F. Salesa Greus,* S. Casanova
*corresponding author
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Pre-published on: 2019 July 22
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Abstract
With an energy range from around 300 GeV to more than 100 TeV, the High Altitude Water Cherenkov (HAWC) observatory is currently the most sensitive gamma-ray survey instrument in the TeV energy range. Recent HAWC data show that 2HWC J1825-134 is the brightest source above 56 TeV in the HAWC field of view. The region of J1825 is complex and contains multiple astrophysical sources, e.g. pulsar wind nebulae, supernova remnants, and molecular clouds. The study of VHE galactic sources like 2HWC J1825-134 is crucial to understand the production and acceleration processes of cosmic rays in the Galaxy, and can clarify whether these sources can provide the power needed to sustain the galactic cosmic ray population up to the knee. In this contribution we will present the morphological analysis of 2HWC J1825-134, discussing the possible astrophysical counterparts of this source. We will also present the spectral analysis, comparing different scenarios of particle acceleration (hadronic/leptonic), and will provide an estimate of the associated cosmic-ray flux produced and the maximum acceleration energy.
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