학술논문
HAWC Study of Very-High-Energy $\gamma$-ray Spectrum of HAWC J1844-034
Document Type
Working Paper
Author
HAWC Collaboration; Albert, A.; Alvarez, C.; Rojas, D. Avila; Solares, H. A. Ayala; Babu, R.; Belmont-Moreno, E.; Breuhaus, M.; Capistrán, T.; Carramiñana, A.; Casanova, S.; Cotzomi, J.; de León, S. Coutiño; De la Fuente, E.; Depaoli, D.; Hernandez, R. Diaz; Dingus, B. L.; DuVernois, M. A.; Durocher, M.; Engel, K.; Espinoza, C.; Fan, K. L.; Fang, K.; Fraija, N.; García-González, J. A.; González, M. M.; Goodman, J. A.; Groetsch, S.; Harding, J. P.; Herzog, I.; Hinton, J.; Huang, D.; Hueyotl-Zahuantitla, F.; Humensky, T. B.; Hüntemeyer, P.; Joshi, V.; Kaufmann, S.; Lee, J.; Vargas, H. León; Longinotti, A. L.; Luis-Raya, G.; Malone, K.; Martinez, O.; Martínez-Castro, J.; Matthews, J. A.; Miranda-Romagnoli, P.; Morales-Soto, J. A.; Moreno, E.; Mostafá, M.; Nellen, L.; Noriega-Papaqui, R.; Olivera-Nieto, L.; Omodei, N.; Pérez-Pérez, E. G.; Rho, C. D.; Rosa-González, D.; Ruiz-Velasco, E.; Salazar, H.; Salazar-Gallegos, D.; Sandoval, A.; Schneider, M.; Serna-Franco, J.; Smith, A. J.; Son, Y.; Springer, R. W.; Tibolla, O.; Tollefson, K.; Torres, I.; Torres-Escobedo, R.; Turner, R.; Ureña-Mena, F.; Varela, E.; Villaseñor, L.; Wang, X.; Watson, I. J.; Willox, E.; Zhou, H.
Source
ApJ 954 (2023) 205
Subject
Language
Abstract
Recently, the region surrounding eHWC J1842-035 has been studied extensively by gamma-ray observatories due to its extended emission reaching up to a few hundred TeV and potential as a hadronic accelerator. In this work, we use 1,910 days of cumulative data from the High Altitude Water Cherenkov (HAWC) observatory to carry out a dedicated systematic source search of the eHWC J1842-035 region. During the search we have found three sources in the region, namely, HAWC J1844-034, HAWC J1843-032, and HAWC J1846-025. We have identified HAWC J1844-034 as the extended source that emits photons with energies up to 175 TeV. We compute the spectrum for HAWC J1844-034 and by comparing with the observational results from other experiments, we have identified HESS J1843-033, LHAASO J1843-0338, and TASG J1844-038 as very-high-energy gamma-ray sources with a matching origin. Also, we present and use the multi-wavelength data to fit the hadronic and leptonic particle spectra. We have identified four pulsar candidates in the nearby region from which PSR J1844-0346 is found to be the most likely candidate due to its proximity to HAWC J1844-034 and the computed energy budget. We have also found SNR G28.6-0.1 as a potential counterpart source of HAWC J1844-034 for which both leptonic and hadronic scenarios are feasible.
Comment: 13 pages, 9 figures, published in ApJ
Comment: 13 pages, 9 figures, published in ApJ