scholarly journals Constraints on the dark matter annihilation scenario of Fermi 130 GeV gamma-ray line emission by continuous gamma-rays, Milky Way halo, galaxy clusters and dwarf galaxies observations

2012 ◽  
Vol 2012 (11) ◽  
pp. 048-048 ◽  
Author(s):  
Xiaoyuan Huang ◽  
Qiang Yuan ◽  
Peng-Fei Yin ◽  
Xiao-Jun Bi ◽  
Xuelei Chen
Keyword(s):  
Dark Matter ◽  
Galaxy Clusters ◽  
Gamma Rays ◽  
Milky Way ◽  
Gamma Ray ◽  
Dwarf Galaxies ◽  
Line Emission ◽  
Dark Matter Annihilation ◽  
Milky Way Halo

scholarly journals Search for Gamma-ray Line emission from Dark Matter annihilation in the Galactic Centre with the MAGIC telescopes

2021 ◽  
Author(s):  
Tomohiro Inada ◽  
Ana Babic ◽  
Andrés Baquero ◽  
Ivana Batković ◽  
Josefa Becerra Gonzalez ◽  
...  
Keyword(s):  
Dark Matter ◽  
Gamma Ray ◽  
Line Emission ◽  
Galactic Centre ◽  
Dark Matter Annihilation

scholarly journals Search for gamma-ray spectral lines from dark matter annihilation in dwarf galaxies with the High-Altitude Water Cherenkov observatory

2020 ◽  
Vol 101 (10) ◽  
Author(s):  
A. Albert ◽  
R. Alfaro ◽  
C. Alvarez ◽  
J. C. Arteaga-Velázquez ◽  
K. P. Arunbabu ◽  
...  
Keyword(s):  
Dark Matter ◽  
High Altitude ◽  
Gamma Ray ◽  
Dwarf Galaxies ◽  
Spectral Lines ◽  
Dark Matter Annihilation

scholarly journals Relieving Tensions Related to the Dark Matter Interpretation of the Fermi-LAT Data

Galaxies ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 92
Author(s):  
Man Chan
Keyword(s):  
Dark Matter ◽  
Synchrotron Radiation ◽  
Milky Way ◽  
Gamma Ray ◽  
Feedback Process ◽  
Dark Matter Annihilation ◽  
Dwarf Spheroidal Galaxies ◽  
Matter Model ◽  
Consistent Picture ◽  
Dark Matter Model

Recently, many studies indicate that the GeV gamma ray excess signal from the central Milky Way can be best explained by ∼40–50 GeV dark matter annihilating via the b b ¯ channel. However, this model appears to be disfavored by the recent Fermi-LAT data for dwarf spheroidal galaxies and the constraint from synchrotron radiation. In this article, we describe a consistent picture to relieve the tensions between the dark matter annihilation model and the observations. We show that a baryonic feedback process is the key to alleviate the tensions and the ∼40–50 GeV dark matter model is still the best one to account for the GeV gamma ray excess in the Milky Way.

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