Abstract
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 bb 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. Copyright © 2018 by the author.
Original language | English |
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Article number | 92 |
Journal | Galaxies |
Volume | 6 |
Issue number | 3 |
Early online date | Aug 2018 |
DOIs | |
Publication status | Published - Sept 2018 |
Citation
Chan, M. H. (2018). Relieving tensions related to the dark matter interpretation of the Fermi-LAT data. Galaxies, 6(3). Retrieved from https://doi.org/10.3390/galaxies6030092Keywords
- Dark matter
- Gamma rays