Galactic Gamma-Ray Diffuse Emission at TeV energies with HAWC Data
Abstract
The Galactic gamma-ray diffuse emission (GDE) is emitted by cosmic rays (CRs), ultra-relativistic protons and electrons, interacting with gas and electromagnetic radiation fields in the interstellar medium. Here we present the analysis of TeV diffuse emission from a region of the Galactic Plane over the range in longitude of , using data collected with the High Altitude Water Cherenkov (HAWC) detector. Spectral, longitudinal and latitudinal distributions of the TeV diffuse emission are shown. The radiation spectrum is compatible with the spectrum of the emission arising from a CR population with an "index" similar to that of the observed CRs. When comparing with the \texttt{DRAGON} \textit{base model}, the HAWC GDE flux is higher by about a factor of two. Unresolved sources such as pulsar wind nebulae and TeV halos could explain the excess emission. Finally, deviations of the Galactic CR flux from the locally measured CR flux may additionally explain the difference between the predicted and measured diffuse fluxes.
Cite
@article{arxiv.2310.09117,
title = {Galactic Gamma-Ray Diffuse Emission at TeV energies with HAWC Data},
author = {R. Alfaro and C. Alvarez and J. C. Arteaga-Velazquez and K. P. Arunbabu and D. Avila Rojas and R. Babu and V. Baghmanyan and E. Belmont-Moreno and C. Brisbois and K. S. Caballero-Mora and T. Capistran and A. Carraminana and S. Casanova and O. Chaparro-Amaro and U. Cotti and J. Cotzomi and S. Coutino de Leon and E. De la Fuente and R. Diaz Hernandez and M. A. DuVernois and M. Durocher and J. C. Dıaz-Velez and K. Engel and C. Espinoza and K. L. Fan and N. Fraija and A. Galvan-Gamez and J. A. Garcıa-Gonzalez and F. Garfias and M. M. Gonzalez and J. A. Goodman and S. Hernandez and B. Hona and D. Huang and F. Hueyotl-Zahuantitla and T. B. Humensky and A. Iriarte and V. Joshi and S. Kaufmann and D. Kieda and G. J. Kunde and A. Lara and H. Leon Vargas and J. T. Linnemann and A. L. Longinotti and G. Luis-Raya and K. Malone and O. Martinez and J. Martınez-Castro and J. A. Matthews and P. Miranda-Romagnoli and E. Moreno and M. Mostafa and A. Nayerhoda and L. Nellen and R. Noriega-Papaqui and E. G. Perez-Perez and D. Rosa-Gonzalez and E. Ruiz-Velasco and H. Salazar and D. Salazar-Gallegos and F. Salesa Greus and A. Sandoval and J. Serna-Franco and A. J. Smith and R. W. Springer and O. Tibolla and K. Tollefson and I. Torres and R. Torres-Escobedo and F. Urena-Mena and L. Villasenor and E. Willox and H. Zhou and C. de Leon and O. Fornieri and D. Gaggero and D. Grasso and A. Marinelli and S. Ventura},
journal= {arXiv preprint arXiv:2310.09117},
year = {2023}
}