HAWC Study of the Ultra-high-energy Spectrum of MGRO J1908+06

A. Albert,R. Alfaro,C. Alvarez,J. D. Alvarez,J. R. Angeles Camacho,J. C. Arteaga-Velazquez,D. Avila Rojas,H. A. Ayala Solares,R. Babu,E. Belmont-Moreno,C. Brisbois,K. S. Caballero-Mora,T. Capistran,A. Carraminana,S. Casanova,U. Cotti,J. Cotzomi,S. Coutino de Leon,E. De la Fuente,C. de Leon,R. Diaz Hernandez,B. L. Dingus,M. A. DuVernois,M. Durocher,J. C. Diaz-Velez,K. Engel,C. Espinoza,K. L. Fan,K. Fang,M. Fernandez Alonso,N. Fraija,D. Garcia,J. A. Garcia-Gonzalez,F. Garfias,G. Giacinti,H. Goksu,M. M. Gonzalez,J. A. Goodman,J. P. Harding,J. Hinton,B. Hona,D. Huang,F. Hueyotl-Zahuantitla,P. Huntemeyer,A. Iriarte,A. Jardin-Blicq,V Joshi,S. Kaufmann,D. Kieda,W. H. Lee,J. Lee,H. Leon Vargas,J. T. Linnemann,A. L. Longinotti,G. Luis-Raya,K. Malone,V Marandon,O. Martinez,J. Martinez-Castro,J. A. Matthews,P. Miranda-Romagnoli, J. A. Morales-Soto,E. Moreno,M. Mostafa,A. Nayerhoda,L. Nellen,M. Newbold,M. U. Nisa,R. Noriega-Papaqui, L. Olivera-Nieto,N. Omodei,A. Peisker,Y. Perez Araujo,E. G. Perez-Perez, C. D. Rho,D. Rosa-Gonzalez,H. Salazar,F. Salesa Greus,A. Sandoval,M. Schneider,H. Schoorlemmer,J. Serna-Franco,A. J. Smith,Y. Son,R. W. Springer,O. Tibolla,K. Tollefson,I Torres,R. Torres-Escobedo,R. Turner,F. Urena-Mena,L. Villasenor,X. Wang,I. J. Watson,E. Willox,A. Zepeda,H. Zhou,M. Breuhaus, H. Li,H. Zhang

ASTROPHYSICAL JOURNAL（2022）

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摘要

We report TeV gamma-ray observations of the ultra-high-energy source MGRO J1908+06 using data from the High Altitude Water Cherenkov Observatory. This source is one of the highest-energy known gamma-ray sources, with emission extending past 200 TeV. Modeling suggests that the bulk of the TeV gamma-ray emission is leptonic in nature, driven by the energetic radio-faint pulsar PSR J1907+0602. Depending on what assumptions are included in the model, a hadronic component may also be allowed. Using the results of the modeling, we discuss implications for detection prospects by multi-messenger campaigns.

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High-Energy Astrophysics

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