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Title: Gamma rays and neutrinos from dark matter annihilation in galaxy clusters

Abstract

The {gamma}-ray and neutrino emissions from dark matter (DM) annihilation in galaxy clusters are studied. After about one year of operation of Fermi-LAT, several nearby clusters are reported with stringent upper limits of GeV {gamma}-ray emission. We use the Fermi-LAT upper limits of these clusters to constrain the DM model parameters. We find that the DM model distributed with substructures predicted in cold DM scenario is strongly constrained by Fermi-LAT {gamma}-ray data. Especially for the leptonic annihilation scenario which may account for the e{sup {+-}}excesses discovered by PAMELA/Fermi-LAT/HESS, the constraint on the minimum mass of substructures is of the level 10{sup 2}-10{sup 3} M{sub {center_dot},} which is much larger than that expected in the cold DM picture, but is consistent with a warm DM scenario. We further investigate the sensitivity of neutrino detections of the clusters by IceCube. It is found that neutrino detection is much more difficult than {gamma}-rays. Only for very heavy DM ({approx}10 TeV) together with a considerable branching ratio to line neutrinos the neutrino sensitivity is comparable with that of {gamma}-rays.

Authors:
 [1];  [2];  [1];  [3];  [2]
  1. Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)
  2. Institute of Theoretical Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)
  3. Theoretical Division, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)
Publication Date:
OSTI Identifier:
21410095
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 82; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevD.82.023506; (c) 2010 The American Physical Society; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANNIHILATION; BRANCHING RATIO; ELECTRON-POSITRON INTERACTIONS; EMISSION; GALAXY CLUSTERS; GAMMA RADIATION; GEV RANGE; MASS; NEUTRINO DETECTION; NEUTRINOS; NONLUMINOUS MATTER; SENSITIVITY; TEV RANGE 01-10; DETECTION; DIMENSIONLESS NUMBERS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; INTERACTIONS; IONIZING RADIATIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MATTER; PARTICLE INTERACTIONS; RADIATION DETECTION; RADIATIONS; TEV RANGE

Citation Formats

Qiang, Yuan, Pengfei, Yin, Xiaojun, Bi, Center for High Energy Physics, Peking University, Beijing 100871, Xinmin, Zhang, Shouhua, Zhu, and Center for High Energy Physics, Peking University, Beijing 100871. Gamma rays and neutrinos from dark matter annihilation in galaxy clusters. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.82.023506.
Qiang, Yuan, Pengfei, Yin, Xiaojun, Bi, Center for High Energy Physics, Peking University, Beijing 100871, Xinmin, Zhang, Shouhua, Zhu, & Center for High Energy Physics, Peking University, Beijing 100871. Gamma rays and neutrinos from dark matter annihilation in galaxy clusters. United States. https://doi.org/10.1103/PHYSREVD.82.023506
Qiang, Yuan, Pengfei, Yin, Xiaojun, Bi, Center for High Energy Physics, Peking University, Beijing 100871, Xinmin, Zhang, Shouhua, Zhu, and Center for High Energy Physics, Peking University, Beijing 100871. 2010. "Gamma rays and neutrinos from dark matter annihilation in galaxy clusters". United States. https://doi.org/10.1103/PHYSREVD.82.023506.
@article{osti_21410095,
title = {Gamma rays and neutrinos from dark matter annihilation in galaxy clusters},
author = {Qiang, Yuan and Pengfei, Yin and Xiaojun, Bi and Center for High Energy Physics, Peking University, Beijing 100871 and Xinmin, Zhang and Shouhua, Zhu and Center for High Energy Physics, Peking University, Beijing 100871},
abstractNote = {The {gamma}-ray and neutrino emissions from dark matter (DM) annihilation in galaxy clusters are studied. After about one year of operation of Fermi-LAT, several nearby clusters are reported with stringent upper limits of GeV {gamma}-ray emission. We use the Fermi-LAT upper limits of these clusters to constrain the DM model parameters. We find that the DM model distributed with substructures predicted in cold DM scenario is strongly constrained by Fermi-LAT {gamma}-ray data. Especially for the leptonic annihilation scenario which may account for the e{sup {+-}}excesses discovered by PAMELA/Fermi-LAT/HESS, the constraint on the minimum mass of substructures is of the level 10{sup 2}-10{sup 3} M{sub {center_dot},} which is much larger than that expected in the cold DM picture, but is consistent with a warm DM scenario. We further investigate the sensitivity of neutrino detections of the clusters by IceCube. It is found that neutrino detection is much more difficult than {gamma}-rays. Only for very heavy DM ({approx}10 TeV) together with a considerable branching ratio to line neutrinos the neutrino sensitivity is comparable with that of {gamma}-rays.},
doi = {10.1103/PHYSREVD.82.023506},
url = {https://www.osti.gov/biblio/21410095}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 2,
volume = 82,
place = {United States},
year = {Thu Jul 15 00:00:00 EDT 2010},
month = {Thu Jul 15 00:00:00 EDT 2010}
}