Evidence that Ultra-High-Energy Gamma Rays are a Universal Feature Near Powerful Pulsars
Abstract
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; 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 ( 3), 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.
Keywords
Cite
@article{arxiv.2101.07895,
title = {Evidence that Ultra-High-Energy Gamma Rays are a Universal Feature Near Powerful Pulsars},
author = {HAWC Collaboration and A. Albert and R. Alfaro and C. Alvarez and J. D. Álvarez and J. R. Angeles Camacho and J. C. Arteaga-Velázquez and K. P. Arunbabu and D. Avila Rojas and H. A. Ayala Solares and V. Baghmanyan and E. Belmont-Moreno and S. Y. BenZvi and C. Brisbois and K. S. Caballero-Mora and T. Capistrán and A. Carramiñana and S. Casanova and U. Cotti and J. Cotzomi and S. Coutiño de León and E. De la Fuente and C. de León and R. Diaz Hernandez and B. L. Dingus and M. A. DuVernois and M. Durocher and J. C. Díaz-Vélez and R. W. Ellsworth and K. Engel and C. Espinoza and K. L. Fan and M. Fernández Alonso and N. Fraija and A. Galván-Gámez and J. A. García-González and F. Garfias and G. Giacinti and M. M. González and J. A. Goodman and J. P. Harding and S. Hernandez and B. Hona and D. Huang and F. Hueyotl-Zahuantitla and P. Hüntemeyer and A. Iriarte and A. Jardin-Blicq and V. Joshi and D. Kieda and A. Lara and W. H. Lee and J. Lee and H. León Vargas and J. T. Linnemann and A. L. Longinotti and G. Luis-Raya and J. Lundeen and K. Malone and V. Marandon and O. Martinez and J. Martínez-Castro and J. A. Matthews and P. Miranda-Romagnoli and J. A. Morales-Soto and E. Moreno and M. Mostafá and A. Nayerhoda and L. Nellen and M. Newbold and M. U. Nisa and R. Noriega-Papaqui and L. Olivera-Nieto and N. Omodei and A. Peisker and Y. Pérez Araujo and E. G. Pérez-Pérez and C. D. Rho and Y. J. Roh and D. Rosa-González and E. Ruiz-Velasco and H. Salazar and F. Salesa Greus and A. Sandoval and M. Schneider and H. Schoorlemmer and J. Serna-Franco and A. J. Smith and R. W. Springer and P. Surajbali and M. Tanner and K. Tollefson and I. Torres and R. Torres-Escobedo and R. Turner and F. Ureña-Mena and L. Villaseñor and T. Weisgarber and E. Willox and H. Zhou},
journal= {arXiv preprint arXiv:2101.07895},
year = {2021}
}
Comments
accepted by ApJL