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Title: Search for gamma-ray emission from dark matter annihilation in the large magellanic cloud with the fermi large area telescope

Abstract

At a distance of 50 kpc and with a dark matter mass of ~10 10 M , the large magellanic cloud (LMC) is a natural target for indirect dark matter searches. We use five years of data from the Fermi Large Area Telescope (LAT) and updated models of the gamma-ray emission from standard astrophysical components to search for a dark matter annihilation signal from the LMC. We perform a rotation curve analysis to determine the dark matter distribution, setting a robust minimum on the amount of dark matter in the LMC, which we use to set conservative bounds on the annihilation cross section. The LMC emission is generally very well described by the standard astrophysical sources, with at most a 1–2σ excess identified near the kinematic center of the LMC once systematic uncertainties are taken into account. As a result, we place competitive bounds on the dark matter annihilation cross section as a function of dark matter particle mass and annihilation channel.

Authors:
 [1];  [2];  [3];  [1];  [4];  [5];  [2]
  1. Rutgers Univ., Piscataway, NJ (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. California Institute of Technology, Pasadena, CA (United States); Univ. of Amsterdam, Amsterdam (Netherlands)
  4. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  5. Institut de Recherche en Astrophysique et Planetologie, Toulouse (France)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1252994
Alternate Identifier(s):
OSTI ID: 1179702; OSTI ID: 1355160
Report Number(s):
FERMILAB-PUB-15-039-AE; arXiv:1502.01020
Journal ID: ISSN 1550-7998; PRVDAQ; 1342903
Grant/Contract Number:  
AC02-07CH11359; AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 91; Journal Issue: 10; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Buckley, Matthew R., Charles, Eric, Gaskins, Jennifer M., Brooks, Alyson M., Drlica-Wagner, Alex, Martin, Pierrick, and Zhao, Geng. Search for gamma-ray emission from dark matter annihilation in the large magellanic cloud with the fermi large area telescope. United States: N. p., 2015. Web. doi:10.1103/PhysRevD.91.102001.
Buckley, Matthew R., Charles, Eric, Gaskins, Jennifer M., Brooks, Alyson M., Drlica-Wagner, Alex, Martin, Pierrick, & Zhao, Geng. Search for gamma-ray emission from dark matter annihilation in the large magellanic cloud with the fermi large area telescope. United States. doi:10.1103/PhysRevD.91.102001.
Buckley, Matthew R., Charles, Eric, Gaskins, Jennifer M., Brooks, Alyson M., Drlica-Wagner, Alex, Martin, Pierrick, and Zhao, Geng. Tue . "Search for gamma-ray emission from dark matter annihilation in the large magellanic cloud with the fermi large area telescope". United States. doi:10.1103/PhysRevD.91.102001. https://www.osti.gov/servlets/purl/1252994.
@article{osti_1252994,
title = {Search for gamma-ray emission from dark matter annihilation in the large magellanic cloud with the fermi large area telescope},
author = {Buckley, Matthew R. and Charles, Eric and Gaskins, Jennifer M. and Brooks, Alyson M. and Drlica-Wagner, Alex and Martin, Pierrick and Zhao, Geng},
abstractNote = {At a distance of 50 kpc and with a dark matter mass of ~1010 M⊙, the large magellanic cloud (LMC) is a natural target for indirect dark matter searches. We use five years of data from the Fermi Large Area Telescope (LAT) and updated models of the gamma-ray emission from standard astrophysical components to search for a dark matter annihilation signal from the LMC. We perform a rotation curve analysis to determine the dark matter distribution, setting a robust minimum on the amount of dark matter in the LMC, which we use to set conservative bounds on the annihilation cross section. The LMC emission is generally very well described by the standard astrophysical sources, with at most a 1–2σ excess identified near the kinematic center of the LMC once systematic uncertainties are taken into account. As a result, we place competitive bounds on the dark matter annihilation cross section as a function of dark matter particle mass and annihilation channel.},
doi = {10.1103/PhysRevD.91.102001},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 10,
volume = 91,
place = {United States},
year = {2015},
month = {5}
}

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