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Title: Constraining particle dark matter using local galaxy distribution

Abstract

It has been long discussed that cosmic rays may contain signals of dark matter. In the last couple of years an anomaly of cosmic-ray positrons has drawn a lot of attentions, and recently an excess in cosmic-ray anti-proton has been reported by AMS-02 collaboration. Both excesses may indicate towards decaying or annihilating dark matter with a mass of around 1–10 TeV. In this article we study the gamma rays from dark matter and constraints from cross correlations with distribution of galaxies, particularly in a local volume. We find that gamma rays due to inverse-Compton process have large intensity, and hence they give stringent constraints on dark matter scenarios in the TeV scale mass regime. Taking the recent developments in modeling astrophysical gamma-ray sources as well as comprehensive possibilities of the final state products of dark matter decay or annihilation into account, we show that the parameter regions of decaying dark matter that are suggested to explain the excesses are excluded. We also discuss the constrains on annihilating scenarios.

Authors:
 [1];  [2]
  1. GRAPPA Institute, University of Amsterdam,1098 XH Amsterdam (Netherlands)
  2. Institute for Theoretical Physics, Kanazawa University,Kanazawa 920-1192 (Japan)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572105
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 06; Other Information: PUBLISHER-ID: JCAP06(2016)045; OAI: oai:repo.scoap3.org:16183; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANNIHILATION; ASTROPHYSICS; COSMIC GAMMA SOURCES; COSMIC POSITRONS; COSMIC PROTONS; FINAL-STATE INTERACTIONS; INTERNATIONAL SPACE STATION; MILKY WAY; NONLUMINOUS MATTER; PARTICLE DECAY; STRING THEORY; TEV RANGE 01-10

Citation Formats

Ando, Shin’ichiro, and Ishiwata, Koji. Constraining particle dark matter using local galaxy distribution. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/06/045.
Ando, Shin’ichiro, & Ishiwata, Koji. Constraining particle dark matter using local galaxy distribution. United States. doi:10.1088/1475-7516/2016/06/045.
Ando, Shin’ichiro, and Ishiwata, Koji. Mon . "Constraining particle dark matter using local galaxy distribution". United States. doi:10.1088/1475-7516/2016/06/045.
@article{osti_22572105,
title = {Constraining particle dark matter using local galaxy distribution},
author = {Ando, Shin’ichiro and Ishiwata, Koji},
abstractNote = {It has been long discussed that cosmic rays may contain signals of dark matter. In the last couple of years an anomaly of cosmic-ray positrons has drawn a lot of attentions, and recently an excess in cosmic-ray anti-proton has been reported by AMS-02 collaboration. Both excesses may indicate towards decaying or annihilating dark matter with a mass of around 1–10 TeV. In this article we study the gamma rays from dark matter and constraints from cross correlations with distribution of galaxies, particularly in a local volume. We find that gamma rays due to inverse-Compton process have large intensity, and hence they give stringent constraints on dark matter scenarios in the TeV scale mass regime. Taking the recent developments in modeling astrophysical gamma-ray sources as well as comprehensive possibilities of the final state products of dark matter decay or annihilation into account, we show that the parameter regions of decaying dark matter that are suggested to explain the excesses are excluded. We also discuss the constrains on annihilating scenarios.},
doi = {10.1088/1475-7516/2016/06/045},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 06,
volume = 2016,
place = {United States},
year = {Mon Jun 27 00:00:00 EDT 2016},
month = {Mon Jun 27 00:00:00 EDT 2016}
}