Investigating Gamma-Ray Lines from Dark Matter with Future Observatories

Abstract

We study the prospects for studying line features in gamma-ray spectra with upcoming gamma-ray experiments, such as HESS-II, the Cherenkov Telescope Array (CTA), and the GAMMA-400 satellite. As an example we use the narrow feature at 130 GeV seen in public data from the Fermi-LAT satellite. We found that all three experiments should be able to confidently confirm or rule out the presence of this 130 GeV feature. If it is real, it should be confirmed with a confidence level higher than 5 sigma. Assuming it to be a spectral signature of dark matter origin, GAMMA-400, thanks to a projected energy resolution of about 1.5% at 100 GeV, should also be able to resolve both the γγ-line and a corresponding Zγ- or Hγ-feature, if the corresponding branching ratio is comparable to that into two photons. It will also allow to distinguish between a gamma-ray line and the similar feature resulting from internal bremsstrahlung photons.

12 pages, 6 figures, 1 table

References in corpus (36)

• A Theory of Dark Matter
• Giant Gamma-ray Bubbles from Fermi-LAT: AGN Activity or Bipolar Galactic Wind?
• Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) = 7 TeV
• Combined search for the Standard Model Higgs boson using up to 4.9 fb-1 of pp collision data at sqrt(s) = 7 TeV with the ATLAS detector at the LHC
• CMB Constraints on WIMP Annihilation: Energy Absorption During the Recombination Epoch
• A Tentative Gamma-Ray Line from Dark Matter Annihilation at the Fermi Large Area Telescope
• A blueprint for detecting supersymmetric dark matter in the Galactic halo
• New Gamma-Ray Contributions to Supersymmetric Dark Matter Annihilation
• Gamma-ray and radio tests of the e+e- excess from DM annihilations
• Constraints on Dark Matter Annihilation in Clusters of Galaxies with the Fermi Large Area Telescope
• Updated CMB constraints on Dark Matter annihilation cross-sections
• Dark Matter Evidence, Particle Physics Candidates and Detection Methods
• Pre-launch estimates for GLAST sensitivity to Dark Matter annihilation signals
• The moment of truth for WIMP Dark Matter
• Constrained MSSM favoring new territories: The impact of new LHC limits and a 125 GeV Higgs boson
• Dark matter constraints from box-shaped gamma-ray features
• Constraints on Dark Matter annihilations from reionization and heating of the intergalactic gas
• Relic densities including Sommerfeld enhancements in the MSSM
• How Dark Are Majorana WIMPs? Signals from MiDM and Rayleigh Dark Matter
• Fermi 130 GeV gamma-ray excess and dark matter annihilation in sub-haloes and in the Galactic centre
• Strong Evidence for Gamma-ray Line Emission from the Inner Galaxy
• What if Dark Matter Gamma-Ray Lines come with Gluon Lines?
• Collisionally Regenerated Dark Matter Structures in Galactic Nuclei
• Gamma Rays from Clusters and Groups of Galaxies: Cosmic Rays versus Dark Matter
• Two Lines or Not Two Lines? That is the Question of Gamma Ray Spectra
• The WIMP Forest: Indirect Detection of a Chiral Square
• Extracting limits on Dark Matter annihilation from gamma-ray observations towards dwarf spheroidal galaxies
• Identification of Dark Matter particles with LHC and direct detection data
• Dark matter line search using a joint analysis of dwarf galaxies with the Fermi Gamma-ray Space Telescope
• Search with EGRET for a Gamma Ray Line from the Galactic Center
• Gamma-ray Lines in the Fermi Data: is it a Bubble?
• Cold ultrarelativistic pulsar winds as potential sources of galactic gamma-ray lines above 100 GeV
• The Quest for Supersymmetry: Early LHC Results versus Direct and Indirect Neutralino Dark Matter Searches
• Spectral and spatial variations of the diffuse gamma-ray background in the vicinity of the Galactic plane and possible nature of the feature at 130 GeV
• Testing the 130 GeV gamma-ray line with high energy resolution detectors
• Mixed Wino-Axion Dark Matter in String/M Theory and the 130 GeV Gamma-line "Signal"

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• Update on scalar singlet dark matter
• A review of indirect searches for particle dark matter
• In Wino Veritas? Indirect Searches Shed Light on Neutralino Dark Matter
• Neutralino Dark Matter at 14 and 100 TeV
• Wino Dark Matter Under Siege
• Physics at the e+ e- Linear Collider
• Form factors for dark matter capture by the Sun in effective theories
• A realistic assessment of the CTA sensitivity to dark matter annihilation
• Towards the Final Word on Neutralino Dark Matter
• Indirect Detection of Dark Matter Using MeV-Range Gamma-Ray Telescopes
• Gamma ray tests of Minimal Dark Matter
• Signatures of Majorana dark matter with t-channel mediators
• Heavy Dark Matter Annihilation from Effective Field Theory
• AMS-100: The Next Generation Magnetic Spectrometer in Space -- An International Science Platform for Physics and Astrophysics at Lagrange Point 2
• Is the 130 GeV Line Real? A Search for Systematics in the Fermi-LAT Data
• Unidentified sources in the Fermi-LAT second source catalog: the case for DM subhalos
• Internal bremsstrahlung signatures in light of direct dark matter searches
• New Search for Monochromatic Neutrinos from Dark Matter Decay
• WIMP searches with gamma rays in the Fermi era: challenges, methods and results
• Neutrino Portal to FIMP Dark Matter with an Early Matter Era
• Gamma-ray boxes from axion-mediated dark matter
• Perspective of monochromatic gamma-ray line detection with the High Energy cosmic-Radiation Detection (HERD) facility onboard China's Space Station
• Galactic Center Radio Constraints on Gamma-Ray Lines from Dark Matter Annihilation
• Indirect Detection of Dark Matter with gamma rays
• Dark Matter in $\gamma$ lines: Galactic Center vs dwarf galaxies
• The One-Loop Correction to Heavy Dark Matter Annihilation
• Design and Performance of the GAMMA-400 Gamma-Ray Telescope for the Dark Matter Searches
• On the sensitivity of CTA to gamma-ray boxes from multi-TeV dark matter
• Fermi-LAT gamma-ray signal from Earth Limb, systematic detector effects and their implications for the 130 GeV gamma-ray excess
• Indirect and direct detection prospect for TeV dark matter in the MSSM-9
• MSSM dark matter and a light slepton sector: The Incredible Bulk
• Dark Matter Decay to a Photon and a Neutrino: the Double Monochromatic Smoking Gun Scenario
• Spectral and spatial variations of the diffuse gamma-ray background in the vicinity of the Galactic plane and possible nature of the feature at 130 GeV
• The 130 GeV gamma-ray line and generic dark matter model building constraints from continuum gamma rays, radio and antiproton data
• Effective Theory of Dark Matter Decay into Monochromatic Photons and its Implications: Constraints from Associated Cosmic-Ray Emission
• AMS-02 Positron Excess and Indirect Detection of Three-body Decaying Dark Matter
• Indirect Detection of WIMP Dark Matter: a compact review
• Dark Matter on Top
• A Simple Recipe for the 111 and 128 GeV Lines
• Prospects for indirect MeV Dark Matter detection with Gamma Rays in light of Cosmic Microwave Background Constraints
• Gamma-ray constraints on dark-matter annihilation to electroweak gauge and Higgs bosons
• Dark Matter Line Searches with the Cherenkov Telescope Array
• Very Degenerate Higgsino Dark Matter
• A decade of dark matter searches with ground-based Cherenkov telescopes
• The Dark Knight Falters
• A Clustering Analysis of the Morphology of the 130 GeV Gamma-Ray Feature
• Searches for Particle Dark Matter with gamma-rays
• Gamma-ray line constraints on Coy Dark Matter
• The spatial distribution of dark-matter-annihilation originated gamma-ray line signal
• Gamma Rays from Bino-like Dark Matter in the MSSM
• The gamma-ray spectral feature from Kaluza-Klein dark matter annihilation and its observability
• Monochromatic Gamma Rays from Dark Matter Annihilation to Leptons
• The electron plus positron spectrum from annihilation of Kaluza-Klein dark matter in the Galaxy
• 130GeV gamma-ray line through axion conversion