HAWC Study of the Ultra-High-Energy Spectrum of MGRO J1908+06. (arXiv:2112.00674v2 [astro-ph.HE] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Collaboration_HAWC/0/1/0/all/0/1">HAWC Collaboration</a>: <a href="http://arxiv.org/find/astro-ph/1/au:+Albert_A/0/1/0/all/0/1">A. Albert</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Alfaro_R/0/1/0/all/0/1">R. Alfaro</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Alvarez_C/0/1/0/all/0/1">C. Alvarez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Alvarez_J/0/1/0/all/0/1">J.D. &#xc1;lvarez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Camacho_J/0/1/0/all/0/1">J.R. Angeles Camacho</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Arteaga_Velazquez_J/0/1/0/all/0/1">J.C. Arteaga-Vel&#xe1;zquez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rojas_D/0/1/0/all/0/1">D. Avila Rojas</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Solares_H/0/1/0/all/0/1">H.A. Ayala Solares</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Babu_R/0/1/0/all/0/1">R. Babu</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Belmont_Moreno_E/0/1/0/all/0/1">E. Belmont-Moreno</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Brisbois_C/0/1/0/all/0/1">C. Brisbois</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Caballero_Mora_K/0/1/0/all/0/1">K.S. Caballero-Mora</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Capistran_T/0/1/0/all/0/1">T. Capistr&#xe1;n</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Carraminana_A/0/1/0/all/0/1">A. Carrami&#xf1;ana</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Casanova_S/0/1/0/all/0/1">S. Casanova</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cotti_U/0/1/0/all/0/1">U. Cotti</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cotzomi_J/0/1/0/all/0/1">J. Cotzomi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Leon_S/0/1/0/all/0/1">S. Couti&#xf1;o de Le&#xf3;n</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fuente_E/0/1/0/all/0/1">E. De la Fuente</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Leon_C/0/1/0/all/0/1">C. de Le&#xf3;n</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hernandez_R/0/1/0/all/0/1">R. Diaz Hernandez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dingus_B/0/1/0/all/0/1">B.L. Dingus</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+DuVernois_M/0/1/0/all/0/1">M.A. DuVernois</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Durocher_M/0/1/0/all/0/1">M. Durocher</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Diaz_Velez_J/0/1/0/all/0/1">J.C. D&#xed;az-V&#xe9;lez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Engel_K/0/1/0/all/0/1">K. Engel</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Espinoza_C/0/1/0/all/0/1">C. Espinoza</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fan_K/0/1/0/all/0/1">K.L. Fan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fang_K/0/1/0/all/0/1">K. Fang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Alonso_M/0/1/0/all/0/1">M. Fern&#xe1;ndez Alonso</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fraija_N/0/1/0/all/0/1">N. Fraija</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Garcia_D/0/1/0/all/0/1">D. Garcia</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Garcia_Gonzalez_J/0/1/0/all/0/1">J.A. Garc&#xed;a-Gonz&#xe1;lez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Garfias_F/0/1/0/all/0/1">F. Garfias</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Giacinti_G/0/1/0/all/0/1">G. Giacinti</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Goksu_H/0/1/0/all/0/1">H. Goksu</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Gonzalez_M/0/1/0/all/0/1">M.M. Gonz&#xe1;lez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Goodman_J/0/1/0/all/0/1">J.A. Goodman</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Harding_J/0/1/0/all/0/1">J.P. Harding</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hinton_J/0/1/0/all/0/1">J. Hinton</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hona_B/0/1/0/all/0/1">B. Hona</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Huang_D/0/1/0/all/0/1">D. Huang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hueyotl_Zahuantitla_F/0/1/0/all/0/1">F. Hueyotl-Zahuantitla</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Huntemeyer_P/0/1/0/all/0/1">P. H&#xfc;ntemeyer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Iriarte_A/0/1/0/all/0/1">A. Iriarte</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Jardin_Blicq_A/0/1/0/all/0/1">A. Jardin-Blicq</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Joshi_V/0/1/0/all/0/1">V. Joshi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kaufmann_S/0/1/0/all/0/1">S. Kaufmann</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kieda_D/0/1/0/all/0/1">D. Kieda</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lee_W/0/1/0/all/0/1">W.H. Lee</a>, et al. (49 additional authors not shown)

We report TeV gamma-ray observations of the ultra-high-energy source MGRO
J1908+06 using data from the High Altitude Water Cherenkov (HAWC) 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.

We report TeV gamma-ray observations of the ultra-high-energy source MGRO
J1908+06 using data from the High Altitude Water Cherenkov (HAWC) 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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