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

Albert A, Alfaro R, Alvarez C, Arteaga-Velázquez JC, Avila Rojas D, Babu R, Belmont-Moreno E, Bernal A, Breuhaus M, Caballero-Mora KS, Capistrán T, Carramiñana A, Casanova S, Cotzomi J, De la Fuente E, Depaoli D, Di Lalla N, Diaz Hernandez R, Dingus BL, DuVernois MA, Espinoza C, Fan KL, Fang K, Fick B, Fraija N, García-González JA, Garfias F, Muñoz AG, González MM, Goodman JA, Groetsch S, Harding JP, Hernández-Cadena S, Herzog I, Huang D, Hueyotl-Zahuantitla F, Hüntemeyer P, Iriarte A, Joshi V, Kaufmann S, Lara A, Lee J, Vargas HL, Longinotti AL, Luis-Raya G, Malone K, Martínez-Castro J, Matthews JA, Miranda-Romagnoli P, Montes JA, Morales-Soto JA, Moreno E, Mostafá M, Nellen L, Newbold M, Nisa MU, Noriega-Papaqui R, Osorio M, Araujo YP, Pérez-Pérez EG, Rho CD, Rosa-González D, Ruiz-Velasco E, Salazar H, Sandoval A, Schneider M, Serna-Franco J, Smith AJ, Son Y, Springer RW, Tibolla O, Tollefson K, Torres I, Torres-Escobedo R, Turner R, Ureña-Mena F, Varela E, Wang X, Watson IJ, Willox E, Yun-Cárcamo S, Zhou H (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Book Volume: 972

Article Number: 21

Journal Issue: 1

DOI: 10.3847/1538-4357/ad59a6

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 (SNRs) and pulsars including SNR G11.1+0.1, SNR G11.0-0.0, and the young radio pulsar PSR J1809-1917. Originally classified as a pulsar wind nebula 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 of the HESS J1809-193 region. We were able to resolve emission detected as an extended component (modelled as a symmetric Gaussian with a 1σ radius of 0.°21) with no clear cutoff at high energies and emitting photons up to 210 TeV. We model the multiwavelength observations for the region around 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.

Authors with CRIS profile

Involved external institutions

National Autonomous University of Mexico / Universidad Nacional Autónoma de México (UNAM) Mexico (MX) Los Alamos National Laboratory United States (USA) (US) Universidad Autónoma de Chiapas (UNACH) Mexico (MX) Universidad Michoacana de San Nicolás de Hidalgo (UMSNH) Mexico (MX) University of Seoul (UOS) / 서울시립대학교 Korea, Republic of (KR) Michigan Technological University United States (USA) (US) Autonomous University of the State of Hidalgo / Universidad Autónoma del Estado de Hidalgo Mexico (MX) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) Universidad Politécnica de Pachuca (UPP) Mexico (MX) National Institute of Astrophysics, Optics and Electronics / Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE) Mexico (MX) National Polytechnic Institute of Mexico / Instituto Politécnico Nacional de México Mexico (MX) Institute of Nuclear Physics Polish Academy of Sciences / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego Polskiej Akademii Nauk Poland (PL) Benemérita Universidad Autónoma de Puebla (BUAP) / Meritorious Autonomous University of Puebla Mexico (MX) University of New Mexico (UNM) / Universidad de Nuevo México United States (USA) (US) Universidad de Guadalajara (UDEG) Mexico (MX) Stanford University United States (USA) (US) University of Maryland United States (USA) (US) University of Wisconsin - Madison United States (USA) (US) Shanghai Jiao Tong University / 上海交通大学 China (CN) Tecnológico de Monterrey (ITESM) Mexico (MX) Michigan State University United States (USA) (US) University of Utah United States (USA) (US) Sungkyunkwan University (SKKU) Korea, Republic of (KR)

How to cite

APA:

Albert, A., Alfaro, R., Alvarez, C., Arteaga-Velázquez, J.C., Avila Rojas, D., Babu, R.,... Zhou, H. (2024). TeV Analysis of a Source-rich Region with the HAWC Observatory: Is HESS J1809-193 a Potential Hadronic PeVatron? Astrophysical Journal, 972(1). https://doi.org/10.3847/1538-4357/ad59a6

MLA:

Albert, A., et al. "TeV Analysis of a Source-rich Region with the HAWC Observatory: Is HESS J1809-193 a Potential Hadronic PeVatron?" Astrophysical Journal 972.1 (2024).

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