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Article ; Online: Discovery of Gamma Rays from the Quiescent Sun with HAWC.

Albert, A / Alfaro, R / Alvarez, C / Arteaga-Velázquez, J C / Avila Rojas, D / Ayala Solares, H A / Babu, R / Belmont-Moreno, E / Brisbois, C / Caballero-Mora, K S / Capistrán, T / Carramiñana, A / Casanova, S / Chaparro-Amaro, O / Cotti, U / Cotzomi, J / Coutiño de León, S / De la Fuente, E / Diaz Hernandez, R /
Dingus, B L / DuVernois, M A / Durocher, M / Díaz-Vélez, J C / Ellsworth, R W / Engel, K / Espinoza, C / Fan, K L / Fang, K / Fernández Alonso, M / Fleischhack, H / Fraija, N / García-González, J A / Garfias, F / González, M M / Goodman, J A / Harding, J P / Hernandez, S / Hinton, J / Huang, D / Hueyotl-Zahuantitla, F / Hüntemeyer, P / Iriarte, A / Joshi, V / Kaufmann, S / Lee, J / Linnemann, J T / Longinotti, A L / Luis-Raya, G / Malone, K / Martinez, O / Martínez-Castro, J / Matthews, J A / Miranda-Romagnoli, P / Morales-Soto, J A / Moreno, E / Mostafá, M / Nayerhoda, A / Nellen, L / Nisa, M U / Noriega-Papaqui, R / Olivera-Nieto, L / Omodei, N / Pérez Araujo, Y / Pérez-Pérez, E G / Rho, C D / Rosa-González, D / Ruiz-Velasco, E / Salazar, H / Salazar-Gallegos, D / Sandoval, A / Schneider, M / Serna-Franco, J / Smith, A J / Son, Y / Springer, R W / Tibolla, O / Tollefson, K / Torres, I / Torres-Escobedo, R / Turner, R / Ureña-Mena, F / Varela, E / Villaseñor, L / Wang, X / Watson, I J / Willox, E / Yun-Cárcamo, S / Zhou, H / de León, C / Beacom, J F / Linden, T / Ng, K C Y / Peter, A H G / Zhou, B

Physical review letters

2023  Volume 131, Issue 5, Page(s) 51201

Abstract: We report the first detection of a TeV γ-ray flux from the solar disk (6.3σ), based on 6.1 years of data from the High Altitude Water Cherenkov (HAWC) observatory. The 0.5-2.6 TeV spectrum is well fit by a power law, dN/dE=A(E/1  TeV)^{-γ}, with A=(1.6±0. ...

Abstract We report the first detection of a TeV γ-ray flux from the solar disk (6.3σ), based on 6.1 years of data from the High Altitude Water Cherenkov (HAWC) observatory. The 0.5-2.6 TeV spectrum is well fit by a power law, dN/dE=A(E/1  TeV)^{-γ}, with A=(1.6±0.3)×10^{-12}  TeV^{-1} cm^{-2} s^{-1} and γ=3.62±0.14. The flux shows a strong indication of anticorrelation with solar activity. These results extend the bright, hard GeV emission from the disk observed with Fermi-LAT, seemingly due to hadronic Galactic cosmic rays showering on nuclei in the solar atmosphere. However, current theoretical models are unable to explain the details of how solar magnetic fields shape these interactions. HAWC's TeV detection thus deepens the mysteries of the solar-disk emission.
Language English
Publishing date 2023-08-09
Publishing country United States
Document type Journal Article
ZDB-ID 208853-8
ISSN 1079-7114 ; 0031-9007
ISSN (online) 1079-7114
ISSN 0031-9007
DOI 10.1103/PhysRevLett.131.051201
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Z 4' 58/153: Show issues
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