TY - JOUR
T1 - Constraining Annihilating Dark Matter Mass by the Radio Continuum Spectral Data of a High-redshift Galaxy Cluster
AU - Chan, Man Ho
AU - Lee, Chak Man
AU - Ng, C. Y.
AU - Leung, Chun Sing
N1 - Publisher Copyright:
© 2020. The American Astronomical Society. All rights reserved..
PY - 2020/9/8
Y1 - 2020/9/8
N2 - In the past decade, the properties of annihilating dark matter models were examined by various kinds of data, including the data of gamma-rays, radio waves, X-rays, positrons, electrons, antiprotons and neutrinos. In particular, most of the studies focus on the data of our Galaxy, nearby galaxies (e.g., M31 galaxy) or nearby galaxy clusters (e.g., Fornax cluster). In this article, we examine the archival radio continuum spectral data of a relatively high-redshift galaxy cluster (A697 cluster) to constrain the properties of annihilating dark matter. We find that leptophilic annihilation channels (e + e -, μ + μ -, and τ + τ -) can give very good fits to the radio continuum spectrum of the A697 cluster.
AB - In the past decade, the properties of annihilating dark matter models were examined by various kinds of data, including the data of gamma-rays, radio waves, X-rays, positrons, electrons, antiprotons and neutrinos. In particular, most of the studies focus on the data of our Galaxy, nearby galaxies (e.g., M31 galaxy) or nearby galaxy clusters (e.g., Fornax cluster). In this article, we examine the archival radio continuum spectral data of a relatively high-redshift galaxy cluster (A697 cluster) to constrain the properties of annihilating dark matter. We find that leptophilic annihilation channels (e + e -, μ + μ -, and τ + τ -) can give very good fits to the radio continuum spectrum of the A697 cluster.
UR - http://www.scopus.com/inward/record.url?scp=85091250457&partnerID=8YFLogxK
U2 - 10.3847/1538-4357/aba74b
DO - 10.3847/1538-4357/aba74b
M3 - Journal article
AN - SCOPUS:85091250457
SN - 0004-637X
VL - 900
SP - 1
EP - 9
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 126
ER -