Dark matter line search using a joint analysis of dwarf galaxies with the Fermi Gamma-ray Space Telescope

Abstract

We perform a joint analysis of dwarf galaxy data from the Fermi Gamma-ray Space Telescope in search of dark matter annihilation into a gamma-ray line. We employ a novel statistical method that takes into account the spatial and spectral information of individual photon events from a sample of seven dwarf galaxies. Dwarf galaxies show no evidence of a gamma-ray line between 10 GeV and 1 TeV. The subsequent upper limit on the annihilation cross section to a two-photon final state is 3.9(+7.1)(-3.7) x 10^-26 cm^3/s at 130 GeV, where the errors reflect the systematic uncertainty in the distribution of dark matter within the dwarf galaxies.

arXiv comment5 pages, 3 figures. Replaced with version accepted for publication as a Rapid Communication in PRD

References in corpus (24)

• Supersymmetric Dark Matter
• Fermi Large Area Telescope Second Source Catalog
• Observability of Gamma Rays from Dark Matter Neutralino Annihilations in the Milky Way Halo
• Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope
• On The Origin Of The Gamma Rays From The Galactic Center
• Exclusion of canonical WIMPs by the joint analysis of Milky Way dwarfs with Fermi
• Observations of Milky Way Dwarf Spheroidal galaxies with the Fermi-LAT detector and constraints on Dark Matter models
• New Gamma-Ray Contributions to Supersymmetric Dark Matter Annihilation
• Precise constraints on the dark matter content of Milky Way dwarf galaxies for gamma-ray experiments
• The Most Dark Matter Dominated Galaxies: Predicted Gamma-ray Signals from the Faintest Milky Way Dwarfs
• Indirect Dark Matter Detection from Dwarf Satellites: Joint Expectations from Astrophysics and Supersymmetry
• H.E.S.S. constraints on Dark Matter annihilations towards the Sculptor and Carina Dwarf Galaxies
• VERITAS Deep Observations of the Dwarf Spheroidal Galaxy Segue 1
• Dark matter profiles and annihilation in dwarf spheroidal galaxies: prospectives for present and future gamma-ray observatories - I. The classical dSphs
• A Complete Spectroscopic Survey of the Milky Way satellite Segue 1: Dark matter content, stellar membership and binary properties from a Bayesian analysis
• Higgs in Space!
• Direct Constraints on Minimal Supersymmetry from Fermi-LAT Observations of the Dwarf Galaxy Segue 1
• VERITAS Search for VHE Gamma-ray Emission from Dwarf Spheroidal Galaxies
• Indirect Dark Matter Detection Limits from the Ultra-Faint Milky Way Satellite Segue 1
• Gamma ray lines from TeV dark matter
• Dark matter in the classical dwarf spheroidal galaxies: a robust constraint on the astrophysical factor for gamma-ray flux calculations
• Gamma Rays from Neutralino Annihilation
• Constraining Dark Matter in Galactic Substructure
• Implications for constrained supersymmetry of combined H.E.S.S. observations of dwarf galaxies, the Galactic halo and the Galactic Centre

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• Dwarf galaxy annihilation and decay emission profiles for dark matter experiments
• A Comprehensive Search for Dark Matter Annihilation in Dwarf Galaxies
• Indication of Gamma-ray Emission from the Newly Discovered Dwarf Galaxy Reticulum II
• Sensitivity Projections for Dark Matter Searches with the Fermi Large Area Telescope
• Gamma ray tests of Minimal Dark Matter
• Investigating Gamma-Ray Lines from Dark Matter with Future Observatories
• Three Exceptions for Thermal Dark Matter with Enhanced Annihilation to Gamma Gamma
• Resolving Small-Scale Dark Matter Structures Using Multi-Source Indirect Detection
• WIMP searches with gamma rays in the Fermi era: challenges, methods and results
• An evidence for indirect detection of dark matter from galaxy clusters in Fermi-LAT data
• Composite magnetic dark matter and the 130 GeV line
• Galactic Center Radio Constraints on Gamma-Ray Lines from Dark Matter Annihilation
• Constraint on the velocity dependent dark matter annihilation cross section from Fermi-LAT observations of dwarf galaxies
• Confronting Galactic and Extragalactic $\gamma$-ray observed by Fermi-LAT with Annihilating Dark Matter in Inert Higgs Doublet Model
• A tale of dark matter capture, sub-dominant WIMPs, and neutrino observatories
• A generic method to constrain the dark matter model parameters from Fermi observations of dwarf spheroids
• Fermi-LAT gamma-ray signal from Earth Limb, systematic detector effects and their implications for the 130 GeV gamma-ray excess
• PAMELA and FERMI-LAT limits on the neutralino-chargino mass degeneracy
• Constraint on the velocity dependent dark matter annihilation cross section from gamma-ray and kinematic observations of ultrafaint dwarf galaxies
• PAMELA/Fermi-LAT electron cosmic ray spectrum at $\sim$100 GeV: implication for dark matter annihilation signal in accordance with the 130 GeV $\gamma$-ray line
• Are Lines From Unassociated Gamma-Ray Sources Evidence For Dark Matter Annihilation?
• TASI 2014 Lectures: The Hunt for Dark Matter
• General calculation of the cross section for dark matter annihilations into two photons
• Complementary Constraints on Light Dark Matter from Heavy Quarkonium Decays
• TeV Dark Matter Searches in the Extragalactic Gamma-Ray Sky
• Prospect for dark matter signatures from dwarf galaxies by LHAASO
• MADHAT: Model-Agnostic Dark Halo Analysis Tool
• Search for gamma-ray line features from Milky Way satellites with Fermi-LAT Pass 8 data
• Search for gamma-ray line signals around the black hole at the galactic center with DAMPE observation
• Limits on Dark Matter annihilation cross sections to gamma-ray lines with subhalo distribution in N-body simulation and Fermi LAT data
• A Clustering Analysis of the Morphology of the 130 GeV Gamma-Ray Feature
• A Robust Method for Treating Astrophysical Mismodeling in Dark Matter Annihilation Searches of Dwarf Spheroidal Galaxies
• Search for the gamma-ray spectral lines with the DAMPE and the Fermi-LAT observations
• Search for line signal candidates in the Fermi-LAT data
• Constraints on Light Dark Matter from Single-Photon Decays of Heavy Quarkonium
• Dark matter from unification
• Search for dark matter in compact hydrogen clouds
• Indirect searches for dark matter with the Fermi LAT instrument