Year: 2025
Type: conference-paper
Abstract: The High Energy Stereoscopic System (H.E.S.S.) collaboration reported the emission of two extended sources, HESS J1857+027 and HESS J1858+020, separated by $\sim 1^{\circ}$, both lacking known counterparts. However, in the 3HWC catalog, the High-Altitude Water Cherenkov (HAWC) collaboration reported the emission of 3HWC J1857+027. We present a multi-source fitting analysis of the HESS J1857 region with $\sim$2860 days of observations from the HAWC observatory as part of a multi-wavelength study effort to better understand the emission mechanisms of HESS J1857+026. With the improved performance and enriched statistics, we can now resolve the emission from both sources in the region beyond tens of TeV and observe a cutoff in the emission for J1857 for energies beyond $\sim$30 TeV.
DOI: 10.22323/1.501.0867
Author: Ramiro Torres Escobedo
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: National Aeronautics and Space Administration, European Commission, National Research Foundation, National Research Foundation of Korea, Office of National Higher Education Science Research and Innovation Policy Council, Coordinación de la Investigación Científica, Institute for Cosmic Ray Research, University of Tokyo, Los Alamos National Laboratory
OpenAlex ID: W4414509676
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