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arXiv · 2407.08849

TeV Analysis of a Source Rich Region with HAWC Observatory: Is HESS J1809-193 a Potential Hadronic PeVatron?

A. Albert·R. Alfaro·C. Alvarez·J. C. Arteaga-Velázquez·D. Avila Rojas·R. Babu·E. Belmont-Moreno·A. Bernal·M. Breuhaus·K. S. Caballero-Mora·T. Capistrán·A. Carramiñana·S. Casanova·J. Cotzomi·E. De la Fuente·D. Depaoli·N. Di Lalla·R. Diaz Hernandez·B. L. Dingus·M. A. DuVernois·C. Espinoza·K. L. Fan·K. Fang·B. Fick·N. Fraija·J. A. García-González·F. Garfias·A. Gonzalez Munoz·M. M. González·J. A. Goodman·S. Groetsch·J. P. Harding·S. Hernández-Cadena·I. Herzog·D. Huang·F. Hueyotl-Zahuantitla·P. Hüntemeyer·A. Iriarte·V. Joshi·S. Kaufmann·A. Lara·J. Lee·H. León Vargas·A. L. Longinotti·G. Luis-Raya·K. Malone·J. Martínez-Castro·J. A. Matthews·P. Miranda-Romagnoli·J. A. Montes·J. A. Morales-Soto·E. Moreno·M. Mostafá·L. Nellen·M. Newbold·M. U. Nisa·R. Noriega-Papaqui·M. Osorio·Y. Pérez Araujo·E. G. Pérez-Pérez·C. D. Rho·D. Rosa-González·E. Ruiz-Velasco·H. Salazar·A. Sandoval·M. Schneider·J. Serna-Franco·A. J. Smith·Y. Son·R. W. Springer·O. Tibolla·K. Tollefson·I. Torres·R. Torres-Escobedo·R. Turner·F. Ureña-Mena·E. Varela·X. Wang·I. J. Watson·E. Willox·S. Yun-Cárcamo·H. Zhou
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Abstract

HESS J1809-193 is an unidentified TeV source, first detected by the High Energy Stereoscopic System (H.E.S.S.) Collaboration. The emission originates in a source-rich region that includes several Supernova Remnants (SNR) and Pulsars (PSR) including SNR G11.1+0.1, SNR G11.0-0.0, and the young radio pulsar J1809-1917. Originally classified as a pulsar wind nebula (PWN) candidate, recent studies show the peak of the TeV region overlapping with a system of molecular clouds. This resulted in the revision of the original leptonic scenario to look for alternate hadronic scenarios. Marked as a potential PeVatron candidate, this region has been studied extensively by H.E.S.S. due to its emission extending up-to several tens of TeV. In this work, we use 2398 days of data from the High Altitude Water Cherenkov (HAWC) observatory to carry out a systematic source search for the HESS J1809-193 region. We were able to resolve emission detected as an extended component (modelled as a Symmetric Gaussian with a 1 $\sigma$ radius of 0.21 $^\circ$) with no clear cutoff at high energies and emitting photons up-to 210 TeV. We model the multi-wavelength observations for the region HESS J1809-193 using a time-dependent leptonic model and a lepto-hadronic model. Our model indicates that both scenarios could explain the observed data within the region of HESS J1809-193.

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A. Albert, R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez, D. Avila Rojas, R. Babu, E. Belmont-Moreno, A. Bernal, M. Breuhaus, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, J. Cotzomi, E. De la Fuente, D. Depaoli, N. Di Lalla, R. Diaz Hernandez, B. L. Dingus, M. A. DuVernois, C. Espinoza, K. L. Fan, K. Fang, B. Fick, N. Fraija, J. A. García-González, F. Garfias, A. Gonzalez Munoz, M. M. González, J. A. Goodman, S. Groetsch, J. P. Harding, S. Hernández-Cadena, I. Herzog, D. Huang, F. Hueyotl-Zahuantitla, P. Hüntemeyer, A. Iriarte, V. Joshi, S. Kaufmann, A. Lara, J. Lee, H. León Vargas, A. L. Longinotti, G. Luis-Raya, K. Malone, J. Martínez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Montes, J. A. Morales-Soto, E. Moreno, M. Mostafá, L. Nellen, M. Newbold, M. U. Nisa, R. Noriega-Papaqui, M. Osorio, Y. Pérez Araujo, E. G. Pérez-Pérez, C. D. Rho, D. Rosa-González, E. Ruiz-Velasco, H. Salazar, A. Sandoval, M. Schneider, J. Serna-Franco, A. J. Smith, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Ureña-Mena, E. Varela, X. Wang, I. J. Watson, E. Willox, S. Yun-Cárcamo, H. Zhou. 2024-07-11. TeV Analysis of a Source Rich Region with HAWC Observatory: Is HESS J1809-193 a Potential Hadronic PeVatron?. https://arxiv.org/abs/2407.08849

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