Evidence that Ultra-high-energy Gamma Rays Are a Universal Feature near Powerful Pulsars

Albert, A. and Alfaro, R. and Alvarez, C. and Álvarez, J. D. and Angeles Camacho, J. R. and Arteaga-Velázquez, J. C. and Arunbabu, K. P. and Rojas, D. Avila and Ayala Solares, H. A. and Baghmanyan, V. and Belmont-Moreno, E. and BenZvi, S. Y. and Brisbois, C. and Caballero-Mora, K. S. and Capistrán, T. and Carramiñana, A. and Casanova, S. and Cotti, U. and Cotzomi, J. and Coutiño de León, S. and De la Fuente, E. and de León, C. and Diaz Hernandez, R. and Dingus, B. L. and DuVernois, M. A. and Durocher, M. and Díaz-Vélez, J. C. and Ellsworth, R. W. and Engel, K. and Espinoza, C. and Fan, K. L. and Fernández Alonso, M. and Fraija, N. and Galván-Gámez, A. and García-González, J. A. and Garfias, F. and Giacinti, G. and González, M. M. and Goodman, J. A. and Harding, J. P. and Hernandez, S. and Hona, B. and Huang, D. and Hueyotl-Zahuantitla, F. and Hüntemeyer, P. and Iriarte, A. and Jardin-Blicq, A. and Joshi, V. and Kieda, D. and Lara, A. and Lee, W. H. and Lee, J. and León Vargas, H. and Linnemann, J. T. and Longinotti, A. L. and Luis-Raya, G. and Lundeen, J. and Malone, K. and Marandon, V. and Martinez, O. and Martínez-Castro, J. and Matthews, J. A. and Miranda-Romagnoli, P. and Morales-Soto, J. A. and Moreno, E. and Mostafá, M. and Nayerhoda, A. and Nellen, L. and Newbold, M. and Nisa, M. U. and Noriega-Papaqui, R. and Olivera-Nieto, L. and Omodei, N. and Peisker, A. and Araujo, Y. Pérez and Pérez-Pérez, E. G. and Rho, C. D. and Roh, Y. J. and Rosa-González, D. and Ruiz-Velasco, E. and Salazar, H. and Salesa Greus, F. and Sandoval, A. and Schneider, M. and Schoorlemmer, H. and Serna-Franco, J. and Smith, A. J. and Springer, R. W. and Surajbali, P. and Tanner, M. and Tollefson, K. and Torres, I. and Torres-Escobedo, R. and Turner, R. and Ureña-Mena, F. and Villaseñor, L. and Weisgarber, T. and Willox, E. and Zhou, H. (2021) Evidence that Ultra-high-energy Gamma Rays Are a Universal Feature near Powerful Pulsars. The Astrophysical Journal Letters, 911 (2). L27. ISSN 2041-8205

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Official URL: https://doi.org/10.3847/2041-8213/abf4dc

Abstract

The highest-energy known gamma-ray sources are all located within 0fdg5 of extremely powerful pulsars. This raises the question of whether ultra-high-energy (UHE; >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 Gamma-Ray Observatory, we present a joint-likelihood analysis of 10 extremely powerful pulsars to search for subthreshold UHE gamma-ray emission correlated with these locations. We report a significant detection (>3σ), 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, such as the magnetic field and particle density in the surrounding area, appears to play a role in the amount of emission.

Item Type:	Article
Subjects:	Pustakas > Physics and Astronomy
Depositing User:	Unnamed user with email support@pustakas.com
Date Deposited:	25 May 2023 11:30
Last Modified:	01 Feb 2024 04:31
URI:	http://archive.pcbmb.org/id/eprint/496

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