Galactic Gamma-Ray Diffuse Emission at TeV energies with HAWC Data
A. Nayerhoda, A. U. Abeysekara, A. Albert, Ruben Jose Alfaro, César Álvarez, Juan de Dios Álvarez Romero, José Roberto Ángeles Camacho, Juan Carlos Arteaga Velázquez, Arun Babu Kollamparambil, D. Avila Rojas, H. A. Ayala Solares, Rishi Babu, Vardan Baghmanyan, Ahron S. Barber, J. Becerra González, Ernesto Belmont-Moreno, S. BenZvi, D. Berley, C. Brisbois, K. S. Caballero‐Mora, Tomás Capistrán Rojas, A. Carramiñana, S. Casanova, Oscar Chaparro-Amaro, U. Cotti, J. Cotzomi, S. Coutinõ de León, E. De la Fuente, Cederik León de León, Lorenzo Diaz, R. Díaz Hernández, Juan Carlos Díaz Vélez, B. L. Dingus, Mora Durocher, M. A. DuVernois, R. W. Ellsworth, K. Engel, María Catalina Espinoza Hernández, Jason Fan, Ke Fang, Mateo Fernandez Alonso, Brian Fick, Henrike Fleischhack, Jorge Luis Flores, N. Fraija, Diego Garcia Aguilar, J. A. García-González, Jose Luis García-Luna, Guillermo García–Torales, F. Garfias, Gwenael Giacinti, Hazal Goksu, M. M. González, J. A. Goodman, J. P. Harding, Sergio Hernández Cadena, Ian Herzog, J. A. Hinton, B. Hona, Dezhi Huang, F. Hueyotl‐Zahuantitla, C. M. Hui, Brian Humensky, P. Hüntemeyer, A. Iriarte, A. Jardin-Blicq, Hannah Jhee, Vikas Joshi, D. Kieda, Gerd J. Kunde, S. Kunwar, A. Lara, Jason Lee, William H. Lee, D. Lennarz, H. León Vargas, J. Linnemann, A. L. Longinotti, R. López-Coto, G. Luis-Raya, Joe Lundeen, K. Malone, V. Marandon, Oscar M Martinez, Israel Martinez Castellanos, H. Martínez-Huerta, J. Martínez-Castro, J. N. Matthews, Julie McEnery, P. Miranda-Romagnoli, Jorge Antonio Morales Soto, Eduardo Moreno Barbosa, M. Mostafá, L. Nellen, Michael Newbold, M. U. Nisa, R. Noriega-Papaqui, Laura Olivera-Nieto, N. Omodei, Alison Peisker
Abstract
The Galactic gamma-ray diffuse emission is produced by the interaction of cosmic rays with ambient gas and electromagnetic radiation fields in the interstellar medium (ISM). Studying this radiation helps reconstruct the particle transport mechanisms and the particle distribution in the Galaxy. In this work, we analyze the TeV diffuse emission in a chosen region of the Galactic plane using data collected with the High Altitude Water Cherenkov (HAWC) detector. The energy and spatial distributions of the diffuse Galactic gamma-ray radiation have been studied after subtracting extended and point sources detected with greater than 5 sigma significance from the region map. The spectral feature of the aforementioned emission is compatible with the gamma-ray emissivity obtained from the locally measured proton and heavier nuclei spectrum, convolved with the gas distribution in the Galaxy.