Evidence that Ultra-High-Energy Gamma Rays are a Universal Feature Near Powerful Pulsars
Creators: name: HAWC Collaboration
name: Albert, A.
name: Alfaro, R.
name: Alvarez, C.
name: Álvarez, J. D.
name: Camacho, J. R. Angeles
name: Arteaga-Velázquez, J. C.
name: Arunbabu, K. P.
name: Rojas, D. Avila
name: Solares, H. A. Ayala
name: Baghmanyan, V.
name: Belmont-Moreno, E.
name: BenZvi, S. Y.
name: Brisbois, C.
name: Caballero-Mora, K. S.
name: Capistrán, T.
name: Carramiñana, A.
name: Casanova, S.
name: Cotti, U.
name: Cotzomi, J.
name: de León, S. Coutiño
name: De la Fuente, E.
name: de León, C.
name: Hernandez, R. Diaz
name: Dingus, B. L.
name: DuVernois, M. A.
name: Durocher, M.
name: Díaz-Vélez, J. C.
name: Ellsworth, R. W.
name: Engel, K.
name: Espinoza, C.
name: Fan, K. L.
name: Alonso, M. Fernández
name: Fraija, N.
name: Galván-Gámez, A.
name: García-González, J. A.
name: Garfias, F.
name: Giacinti, G.
name: González, M. M.
name: Goodman, J. A.
name: Harding, J. P.
name: Hernandez, S.
name: Hona, B.
name: Huang, D.
name: Hueyotl-Zahuantitla, F.
name: Hüntemeyer, P.
name: Iriarte, A.
name: Jardin-Blicq, A.
name: Joshi, V.
name: Kieda, D.
name: Lara, A.
name: Lee, W. H.
name: Lee, J.
name: Vargas, H. León
name: Linnemann, J. T.
name: Longinotti, A. L.
name: Luis-Raya, G.
name: Lundeen, J.
name: Malone, K.
name: Marandon, V.
name: Martinez, O.
name: Martínez-Castro, J.
name: Matthews, J. A.
name: Miranda-Romagnoli, P.
name: Morales-Soto, J. A.
name: Moreno, E.
name: Mostafá, M.
name: Nayerhoda, A.
name: Nellen, L.
name: Newbold, M.
name: Nisa, M. U.
name: Noriega-Papaqui, R.
name: Olivera-Nieto, L.
name: Omodei, N.
name: Peisker, A.
name: Araujo, Y. Pérez
name: Pérez-Pérez, E. G.
name: Rho, C. D.
name: Roh, Y. J.
name: Rosa-González, D.
name: Ruiz-Velasco, E.
name: Salazar, H.
name: Greus, F. Salesa
name: Sandoval, A.
name: Schneider, M.
name: Schoorlemmer, H.
name: Serna-Franco, J.
name: Smith, A. J.
name: Springer, R. W.
name: Surajbali, P.
name: Tanner, M.
name: Tollefson, K.
name: Torres, I.
name: Torres-Escobedo, R.
name: Turner, R.
name: Ureña-Mena, F.
name: Villaseñor, L.
name: Weisgarber, T.
name: Willox, E.
name: Zhou, H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The highest-energy known gamma-ray sources are all located within 0.5 degrees of extremely powerful pulsars. This raises the question of whether ultra-high-energy (UHE; $&gt;$ 56 TeV) gamma-ray emission is a universal feature expected near pulsars with a high spin-down power. Using four years of data from the High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory, we present a joint-likelihood analysis of ten extremely powerful pulsars to search for UHE gamma-ray emission correlated with these locations. We report a significant detection ($&gt;$ 3$σ$), indicating that UHE gamma-ray emission is a generic feature of powerful pulsars. We discuss the emission mechanisms of the gamma rays and the implications of this result. The individual environment that each pulsar is found in appears to play a role in the amount of emission.
description: accepted by ApJL