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arxiv: 2407.08849 · v1 · pith:HUEBCPRTnew · submitted 2024-07-11 · 🌌 astro-ph.HE · hep-ex

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-Vel\'azquez , D. Avila Rojas , R. Babu , E. Belmont-Moreno , A. Bernal
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M. Breuhaus K.S. Caballero-Mora T. Capistr\'an A. Carrami\~nana 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. Garc\'ia-Gonz\'alez F. Garfias A. Gonzalez Munoz M.M. Gonz\'alez J.A. Goodman S. Groetsch J.P. Harding S. Hern\'andez-Cadena I. Herzog D. Huang F. Hueyotl-Zahuantitla P. H\"untemeyer A. Iriarte V. Joshi S. Kaufmann A. Lara J. Lee H. Le\'on Vargas A.L. Longinotti G. Luis-Raya K. Malone J. Mart\'inez-Castro J.A. Matthews P. Miranda-Romagnoli J.A. Montes J.A. Morales-Soto E. Moreno M. Mostaf\'a L. Nellen M. Newbold M.U. Nisa R. Noriega-Papaqui M. Osorio Y. P\'erez Araujo E.G. P\'erez-P\'erez C.D. Rho D. Rosa-Gonz\'alez 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. Ure\~na-Mena E. Varela X. Wang I.J. Watson E. Willox S. Yun-C\'arcamo H. Zhou
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classification 🌌 astro-ph.HE hep-ex
keywords regionhessj1809-193modelemissionhighsourcecandidate
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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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