A Search for Dark Matter in the Galactic Halo with HAWC
Abstract
The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a wide field-of-view observatory sensitive to 500 GeV - 100 TeV gamma rays and cosmic rays. With its observations over 2/3 of the sky every day, the HAWC observatory is sensitive to a wide variety of astrophysical sources, including possible gamma rays from dark matter. Dark matter annihilation and decay in the Milky Way Galaxy should produce gamma-ray signals across many degrees on the sky. The HAWC instantaneous field-of-view of 2 sr enables observations of extended regions on the sky, such as those from dark matter in the Galactic halo. Here we show limits on the dark matter annihilation cross-section and decay lifetime from HAWC observations of the Galactic halo with 15 months of data. These are some of the most robust limits on TeV and PeV dark matter, largely insensitive to the dark matter morphology. These limits begin to constrain models in which PeV IceCube neutrinos are explained by dark matter which primarily decays into hadrons.
Keywords
Cite
@article{arxiv.1710.10288,
title = {A Search for Dark Matter in the Galactic Halo with HAWC},
author = {A. U. Abeysekara and A. M. Albert and R. Alfaro and C. Alvarez and J. D. Álvarez and R. Arceo and J. C. Arteaga-Velázquez and D. Avila Rojas and H. A. Ayala Solares and A. Becerril and E. Belmont-Moreno and S. Y. BenZvi and A. Bernal and C. Brisbois and K. S. Caballero-Mora and T. Capistrán and A. Carramiñana and S. Casanova and M. Castillo and U. Cotti and J. Cotzomi and C. De León and E. De la Fuente and R. Diaz Hernandez and B. L. Dingus and M. A. DuVernois and J. C. Díaz-Vélez and K. Engel and O. Enríquez-Rivera and D. W. Fiorino and H. Fleischhack and N. Fraija and J. A. García-González and F. Garfias and A. González Muñoz and M. M. González and J. A. Goodman and Z. Hampel-Arias and J. P. Harding and S. Hernandez and A. Hernandez-Almada and F. Hueyotl-Zahuantitla and P. Hüntemeyer and A. Iriarte and A. Jardin-Blicq and V. Joshi and S. Kaufmann and R. J. Lauer and W. H. Lee and D. Lennarz and H. León Vargas and J. T. Linnemann and A. L. Longinotti and G. Luis-Raya and R. Luna-García and R. López-Coto and K. Malone and S. S. Marinelli and O. Martinez and I. Martinez-Castellanos and J. Martínez-Castro and J. A. Matthews and P. Miranda-Romagnoli and E. Moreno and M. Mostafá and L. Nellen and M. Newbold and M. U. Nisa and R. Noriega-Papaqui and R. Pelayo and J. Pretz and E. G. Pérez-Pérez and Z. Ren and C. D. Rho and N. L. Rodd and D. Rosa-González and M. Rosenberg and E. Ruiz-Velasco and B. R. Safdi and H. Salazar and F. Salesa Greus and A. Sandoval and M. Schneider and G. Sinnis and A. J. Smith and R. W. Springer and P. Surajbali and I. Taboada and O. Tibolla and K. Tollefson and I. Torres and T. N. Ukwatta and G. Vianello and L. Villaseñor and T. Weisgarber and S. Westerhoff and I. G. Wisher and J. Wood and T. Yapici and G. B. Yodh and P. W. Younk and A. Zepeda and H. Zhou},
journal= {arXiv preprint arXiv:1710.10288},
year = {2018}
}
Comments
24 pages, 11 figures