Year: 2025
Type: conference-paper
Abstract: We report the detection of TeV gamma-ray emission from M87 with the High Altitude Water Cherenkov (HAWC) observatory, marking the first time its time-integrated TeV spectrum has been measured over an extended period of approximately 6 years. The emission is consistent with a power-law spectrum with index $\alpha = 2.53 \pm 0.29$ and flux normalization $(7.09 \pm 1.24) \times 10^{-13}$ cm$^{-2}$ s$^{-1}$ TeV$^{-1}$ at 1 TeV, extending up to 26.5 TeV at a 1$\sigma$ confidence level. This result provides the most detailed characterization of the very-high-energy (VHE) emission of M87, derived from the longest temporal coverage up to date, and offers new constraints on particle acceleration in radio galaxies.
DOI: 10.22323/1.501.0789
Institutions: Universidad Nacional Autónoma de México, University of Turin
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, European Commission, National Research Foundation, Consejo Nacional de Ciencia y Tecnología, National Research Foundation of Korea, Benemérita Universidad Autónoma de Puebla, Office of National Higher Education Science Research and Innovation Policy Council, Goddard Space Flight Center, Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México, Coordinación de la Investigación Científica, Institute for Cosmic Ray Research, University of Tokyo, Laboratory Directed Research and Development, Los Alamos National Laboratory
Awards: G1012113107, G1137351982, G1477402476, G1943778919, G201248631, G20842220, G227081073, G2834597881, G3092080779, G3432588090, G3455266465, G3650325917, G4234058003, G4385750942, G4656072107, G4673649240, G4840023426, G5185440073, G5756405743, G5928845074, G5984383661, G6809838226, G6866600364, G6958583472, G7223072566, G726386190, G7379686924, G7757046036, G8432112341, G8651248068
OpenAlex ID: W4414530663
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