Title

Dark Matter Limits from Dwarf Spheroidal Galaxies with the HAWC Gamma-Ray Observatory

Authors

A. Albert, Los Alamos National Laboratory
R. Alfaro, Universidad Nacional Autónoma de México
C. Alvarez, Universidad Autónoma de Chiapas
J. D. Álvarez, Universidad Michoacana de San Nicolás de Hidalgo
R. Arceo, Universidad Autónoma de Chiapas
J. C. Arteaga-Velázquez, Universidad Michoacana de San Nicolás de Hidalgo
D. Avila Rojas, Universidad Nacional Autónoma de México
H. A.Ayala Solares, Michigan Technological University
N. Bautista-Elivar, Universidad Politécnica de Pachuca
A. Becerril, Universidad Nacional Autónoma de México
E. Belmont-Moreno, Universidad Nacional Autónoma de México
S. Y. Benzvi, University of Rochester
A. Bernal, Universidad Nacional Autónoma de México
J. Braun, University of Wisconsin-Madison
C. Brisbois, Michigan Technological University
K. S. Caballero-Mora, Universidad Autónoma de Chiapas
T. Capistrán, Instituto Nacional de Astrofisica Optica y Electronica
A. Carramiñana, Instituto Nacional de Astrofisica Optica y Electronica
S. Casanova, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
M. Castillo, Universidad Michoacana de San Nicolás de Hidalgo
U. Cotti, Universidad Michoacana de San Nicolás de Hidalgo
J. Cotzomi, Benemerita Universidad Autonoma de Puebla
S. Coutiño De León, Instituto Nacional de Astrofisica Optica y Electronica
C. De León, Benemerita Universidad Autonoma de Puebla
E. De La Fuente, Universidad de Guadalajara
R. DIaz Hernandez, Instituto Nacional de Astrofisica Optica y Electronica
B. L. DIngus, Los Alamos National Laboratory
M. A. Duvernois, University of Wisconsin-Madison
J. C. DÍaz-Vélez, Universidad de Guadalajara
R. W. Ellsworth, George Mason University, Fairfax Campus
K. Engel, University of Maryland
D. W. Fiorino, University of Maryland

Document Type

Article

Publication Date

2-1-2018

Abstract

© 2018. The American Astronomical Society. All rights reserved. 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 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 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. We also present the HAWC flux upper limits of the 15 dwarf spheroidal galaxies in half-decade energy bins.

Publication Title

Astrophysical Journal

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