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Title: Confronting various dark matter scenarios with dwarf spheroidal gamma-ray observations

Abstract

Dwarf spheroidal galaxies are promising targets for the indirect detection of dark matter through gamma-ray emission due to their proximity, lack of astrophysical backgrounds and high dark matter density. They are often used to place restrictive bounds on the dark matter annihilation cross section. In this report, we analyze six years of Fermi-LAT gamma-ray data from Dwarf Spheroidal galaxies that are satellites of the Milky Way, and constrain the parameter space that explain the Fermi-LAT Galactic center gamma-ray emission in 4 body final states, neutralino dark matter annihilation cross-section, and decaying dark matter lifetime for several decay channels.

Authors:
 [1]
  1. Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843-4242 (United States)
Publication Date:
OSTI Identifier:
22609063
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1743; Journal Issue: 1; Conference: CETUP 2015: Workshop on dark matter, neutrino physics and astrophysics, Deadwood, SD (United States), 15 Jun - 17 Jul 2015, PPC 2015: 9. international conference on interconnections between particle physics and cosmology, Deadwood, SD (United States), 15 Jun - 17 Jul 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; ASTROPHYSICS; COSMIC GAMMA SOURCES; CROSS SECTIONS; DECAY; DENSITY; DETECTION; DWARF STARS; EMISSION; GAMMA RADIATION; LIFETIME; MILKY WAY; NEUTRALINOS; NONLUMINOUS MATTER; SPACE

Citation Formats

Ghosh, Tathagata, E-mail: ghoshtatha@tamu.edu. Confronting various dark matter scenarios with dwarf spheroidal gamma-ray observations. United States: N. p., 2016. Web. doi:10.1063/1.4953272.
Ghosh, Tathagata, E-mail: ghoshtatha@tamu.edu. Confronting various dark matter scenarios with dwarf spheroidal gamma-ray observations. United States. doi:10.1063/1.4953272.
Ghosh, Tathagata, E-mail: ghoshtatha@tamu.edu. Tue . "Confronting various dark matter scenarios with dwarf spheroidal gamma-ray observations". United States. doi:10.1063/1.4953272.
@article{osti_22609063,
title = {Confronting various dark matter scenarios with dwarf spheroidal gamma-ray observations},
author = {Ghosh, Tathagata, E-mail: ghoshtatha@tamu.edu},
abstractNote = {Dwarf spheroidal galaxies are promising targets for the indirect detection of dark matter through gamma-ray emission due to their proximity, lack of astrophysical backgrounds and high dark matter density. They are often used to place restrictive bounds on the dark matter annihilation cross section. In this report, we analyze six years of Fermi-LAT gamma-ray data from Dwarf Spheroidal galaxies that are satellites of the Milky Way, and constrain the parameter space that explain the Fermi-LAT Galactic center gamma-ray emission in 4 body final states, neutralino dark matter annihilation cross-section, and decaying dark matter lifetime for several decay channels.},
doi = {10.1063/1.4953272},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1743,
place = {United States},
year = {Tue Jun 21 00:00:00 EDT 2016},
month = {Tue Jun 21 00:00:00 EDT 2016}
}