Dark Matter Limits From Dwarf Spheroidal Galaxies with The HAWC Gamma-Ray Observatory
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. It can also perform diverse indirect searches for dark matter (DM) annihilation and decay. Among the most promising targets for the indirect detection of dark matter are dwarf spheroidal galaxies. These objects are expected to have few astrophysical sources of gamma rays but high dark matter content, making them ideal candidates for an indirect dark matter detection with gamma rays. Here we present individual limits on the annihilation cross section and decay lifetime for 15 dwarf spheroidal galaxies within the HAWC field-of-view, as well as their combined limit. These are the first limits on the annihilation cross section and decay lifetime using data collected with HAWC.
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Cite
@article{arxiv.1706.01277,
title = {Dark Matter Limits From Dwarf Spheroidal Galaxies with The HAWC Gamma-Ray Observatory},
author = {A. 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 N. Bautista-Elivar and A. Becerril and E. Belmont-Moreno and S. Y. BenZvi and A. Bernal and J. Braun and K. S. Caballero-Mora and T. Capistrán and A. Carramiñana and M. Castillo and U. Cotti 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 R. W. Ellsworth and D. W. Fiorino and N. Fraija and J. A. García-González and F. Garfias and M. M. González and J. A. Goodman and J. P. Harding and S. Hernandez and A. Hernandez-Almada and A. Iriarte and V. Joshi and S. Kaufmann and D. Kieda and R. J. Lauer and D. Lennarz and H. León Vargas and J. T. Linnemann and A. L. Longinotti and G. Luis Raya and R. López-Coto and K. Malone and S. S. Marinelli and I. Martinez-Castellanos and J. Martínez-Castro and H. Martínez-Huerta and J. A. Matthews and P. Miranda-Romagnoli and E. Moreno 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 C. Rivière and D. Rosa-González and E. Ruiz-Velasco and F. Salesa Greus and A. Sandoval and M. Schneider and H. Schoorlemmer 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. Weisgarber and T. Yapici and H. Zhou},
journal= {arXiv preprint arXiv:1706.01277},
year = {2018}
}
Comments
18 pages, 6 figures, 2 tables