학술논문
The TeV Sun Rises: Discovery of Gamma rays from the Quiescent Sun with HAWC
Document Type
Working Paper
Author
Albert, A.; Alfaro, R.; Alvarez, C.; Arteaga-Velazquez, J. C.; Rojas, D. Avila; Solares, H. A. Ayala; Babu, R.; Belmont-Moreno, E.; Brisbois, C.; Caballero-Mora, K. S.; Capistran, T.; Carraminana, A.; Casanova, S.; Chaparro-Amaro, O.; Cotti, U.; Cotzomi, J.; de Leon, S. Coutino; De la Fuente, E.; Hernandez, R. Diaz; Dingus, B. L.; DuVernois, M. A.; Durocher, M.; Diaz-Velez, J. C.; Ellsworth, R. W.; Engel, K.; Espinoza, C.; Fan, K. L.; Fang, K.; Alonso, M. Fernandez; Fleischhack, H.; Fraija, N.; Garcia-Gonzalez, J. A.; Garfia, F.; Gonzalez, M. M.; Goodman, J. A.; Harding, J. P.; Hernandez, S.; Hinton, J.; Huang, D.; Hueyotl-Zahuantitla, F.; Huntemeyer, P.; Iriarte, A.; Joshi, V.; Kaufmann, S.; Lee, J.; Linnemann, J. T.; Longinotti, A. L.; Luis-Raya, G.; Malone, K.; Martinez, O.; Martinez-Castro, J.; Matthews, J. A.; Miranda-Romagnoli, P.; Morales-Soto, J. A.; Moreno, E.; Mostafa, M.; Nayerhoda, A.; Nellen, L.; Nisa, M. U.; Noriega-Papaqui, R.; Olivera-Nieto, L.; Omodei, N.; Araujo, Y. Pérez; Perez-Perez, E. G.; Rho, C. D.; Rosa-Gonzalez, 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.; Urena-Mena, F.; 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.
Source
Phys. Rev. Lett. 131, 051201, August 2023
Subject
Language
Abstract
We report the first detection of a TeV gamma-ray flux from the solar disk (6.3$\sigma$), 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 = $A (E/1 \text{ TeV})^{-\gamma}$, with $A = (1.6 \pm 0.3) \times 10^{-12}$ TeV$^{-1}$ cm$^{-2}$ s$^{-1}$ and $\gamma = -3.62 \pm 0.14$. 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.
Comment: 15 pages, 8 figures including supplementary material. Accepted for publication in Physical Review Letters
Comment: 15 pages, 8 figures including supplementary material. Accepted for publication in Physical Review Letters