Gamma-ray excess and the minimal dark matter model

  title={Gamma-ray excess and the minimal dark matter model},
  author={Michael Duerr and Pavel Fileviez P{\'e}rez and Juri Smirnov},
  journal={Journal of High Energy Physics},
A bstractWe point out that the gamma-ray excesses in the galactic center and in the dwarf galaxy Reticulum II can both be well explained within the simplest dark matter model. We find that the corresponding regions of parameter space will be tested by direct and indirect dark matter searches in the near future. 
The galactic center excess from Z 3 scalar semi-annihilations
We investigate the possibility of the Z3 scalar singlet model explaining the Fermi galactic centre excess. We find a good fit to the measured spectral excess in the region where the dark matter mass
A global fit of the γ-ray galactic center excess within the scalar singlet Higgs portal model
We analyse the excess in the -ray emission from the center of our galaxy observed by Fermi-LAT in terms of dark matter annihilation within the scalar Higgs portal model. In particular, we include the
Gamma lines from the hidden sector
We discuss the visibility of gamma lines from dark matter annihilation. We point out a class of theories for dark matter which predict the existence of gamma lines with striking features. In these
Secluded singlet fermionic dark matter driven by the Fermi gamma-ray excess
We examine the possibility that the dark matter (DM) interpretation of the GeV scale Fermi gamma-ray excess at the Galactic center can be realized in a specific framework-secluded singlet fermionic
Dark matter properties implied by gamma ray interstellar emission models
We infer dark matter properties from gamma ray residuals extracted using eight different interstellar emission scenarios proposed by the Fermi-LAT Collaboration to explain the Galactic Center gamma
Spin-one dark matter and gamma ray signals from the galactic center
In this work we study the possibility that the gamma ray excess (GRE) at the Milky Way galactic center come from the annihilation of dark matter with a $(1,0)\oplus(0,1)$ space-time structure
Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays
A possible hint of dark matter annihilation has been found in Cuoco, Korsmeier and Kramer (2017) from an analysis of recent cosmic-ray antiproton data from AMS-02 and taking into account cosmic-ray
A closer look at CP-violating Higgs portal dark matter as a candidate for the GCE
A statistically significant excess of gamma rays has been reported and robustly confirmed in the Galactic Center over the past decade. Large local dark matter densities suggest that this Galactic
The galactic center excess from ℤ3$$ {\mathbb{Z}}_3 $$ scalar semi-annihilations
A bstractWe investigate the possibility of the ℤ3$$ {\mathbb{Z}}_3 $$ scalar singlet model explaining the Fermi galactic centre excess. We find a good fit to the measured spectral excess in the


Scalar Singlet Dark Matter and Gamma Lines
Possible Evidence For Dark Matter Annihilation In The Inner Milky Way From The Fermi Gamma Ray Space Telescope
We study the gamma rays observed by the Fermi Gamma Ray Space Telescope from the direction of the Galactic Center and find that their angular distribution and energy spectrum are well described by a
Scalar dark matter: direct vs. indirect detection
A bstractWe revisit the simplest model for dark matter. In this context the dark matter candidate is a real scalar field which interacts with the Standard Model particles through the Higgs portal. We
Dark matter and pulsar model constraints from Galactic Center Fermi-LAT gamma-ray observations
Employing Fermi-LAT gamma ray observations, several independent groups have found excess extended gamma ray emission at the Galactic center (GC). Both, annihilating dark matter (DM) or a population
Gamma rays from the annihilation of singlet scalar dark matter.
We consider an extension of the Standard Model by a singlet scalar that accounts for the dark matter of the Universe. Within this model we compute the expected gamma ray flux from the annihilation of
Astrophysical and dark matter interpretations of extended gamma-ray emission from the Galactic Center
We construct empirical models of the diffuse gamma-ray background toward the Galactic Center. Including all known point sources and a template of emission associated with interactions of cosmic rays
The Fermi Large Area Telescope (LAT) has provided the most detailed view to date of the emission toward the Galactic center (GC) in high-energy gamma-rays. This paper describes the analysis of data
On The Gamma-Ray Emission From Reticulum II and Other Dwarf Galaxies
The recent discovery of ten new dwarf galaxy candidates by the Dark Energy Survey (DES) and the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS) could increase the Fermi Gamma-Ray
GeV excess in the Milky Way: The role of diffuse galactic gamma-ray emission templates
Several groups have analyzed the publicly available Fermi-LAT data and have reported a spatially extended. ray excess of around 1-3 GeV from the region surrounding the Galactic center that might