Multi-wavelength signals of dark matter annihilations at the Galactic center

Abstract

We perform a systematic study of the multi-wavelength signal induced by weakly interacting massive particle (WIMP) annihilations at the Galactic Center (GC). Referring to a generic WIMP dark matter (DM) scenario and depending on astrophysical inputs, we discuss spectral and angular features and sketch correlations among signals in the different energy bands. None of the components which have been associated to the GC source Sgr A*, nor the diffuse emission components from the GC region, have spectral or angular features typical of a DM source. Still, data-sets at all energy bands, namely, the radio, near infrared, X-ray and gamma-ray bands, contribute to place significant constraints on the WIMP parameter space. In general, the gamma-ray energy range is not the one with the largest signal to background ratio. In the case of large magnetic fields close to the GC, X-ray data give the tightest bounds. The emission in the radio-band, which is less model dependent, is very constraining as well. The recent detection by HESS of a GC gamma-ray source, and of a diffuse gamma-ray component, limits the possibility of a DM discovery with next generation of gamma-ray telescopes, like GLAST and CTA. We find that the most of the region in the parameter space accessible to these instruments is actually already excluded at other wave-lenghts. On the other hand, there may be still an open window to improve constraints with wide-field radio observations.

arXiv comment26 pages, 32 figures, treatments of starlight and interstellar medium improved, other minor changes, references added

References in corpus (64)

• A Universal Density Profile from Hierarchical Clustering
• Particle Dark Matter: Evidence, Candidates and Constraints
• Supersymmetric Dark Matter
• Closest Star Seen Orbiting the Supermassive Black Hole at the Centre of the Milky Way
• Cosmic-ray propagation and interactions in the Galaxy
• The Inner Structure of LambdaCDM Halos III: Universality and Asymptotic Slopes
• Non-Baryonic Dark Matter - Observational Evidence and Detection Methods
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• Observational and Theoretical Constraints on Singular Dark Matter Halos
• Chandra X-ray Spectroscopic Imaging of Sgr A* and the Central Parsec of the Galaxy
• Dark matter annihilation at the galactic center
• LCDM-based models for the Milky Way and M31 I: Dynamical Models
• Near-infrared flares from accreting gas around the supermassive black hole at the Galactic Centre
• The cored distribution of dark matter in spiral galaxies
• Observability of Gamma Rays from Dark Matter Neutralino Annihilations in the Milky Way Halo
• The Supermassive Black Hole at the Galactic Center
• Discovery of Very-High-Energy Gamma-Rays from the Galactic Centre Ridge
• The Accelerations of Stars Orbiting the Milky Way's Central Black Hole
• Advection-Dominated Accretion Model of Sagittarius A*: Evidence for a Black Hole at the Galactic Center
• Very high energy gamma rays from the direction of Sagittarius A*
• Stellar Dynamics in the Galactic centre: Proper Motions and Anisotropy
• A Dark-Matter Spike at the Galactic Center?
• The Large-scale Bipolar Wind in the Galactic Center
• A size of ~1 AU for the radio source Sgr A* at the centre of the Milky Way
• Multi-frequency analysis of neutralino dark matter annihilations in the Coma cluster
• Spatial distribution of interstellar gas in the innermost 3 kpc of our Galaxy
• Diffuse X-ray Emission in a Deep Chandra Image of the Galactic Center
• Cusps in CDM halos
• H.E.S.S. observations of the Galactic Center region and their possible dark matter interpretation
• Gamma Rays from Kaluza-Klein Dark Matter
• Evidence Of Dark Matter Annihilations In The WMAP Haze
• Detection of Sub-TeV Gamma-Rays from the Galactic Center Direction by CANGAROO-II
• Time-Dependent Models for Dark Matter at the Galactic Center
• Baryonic Pinching of Galactic Dark Matter Halos
• TeV Gamma-Ray Observations of the Galactic Center
• Observation of Gamma Rays from the Galactic Center with the MAGIC Telescope
• Detecting dark matter WIMPs in the Draco dwarf: a multi-wavelength perspective
• Neutralino annihilation into gamma-rays in the Milky Way and in external galaxies
• High energy gamma rays from the massive black hole in the Galactic Center
• The Galactic Center as a Dark Matter Gamma-Ray Source
• TeV gamma-rays and the largest masses and annihilation cross sections of neutralino dark matter
• Evidence for a Weak Galactic Center Magnetic Field from Diffuse Low Frequency Nonthermal Radio Emission
• G359.95-0.04: Pulsar Candidate Near Sgr A*
• Indirect Detection of Kaluza-Klein Dark Matter
• Model-independent dark matter annihilation bound from the diffuse gamma ray flux
• Neutralino Annihilation at the Galactic Center Revisited
• Diffuse inverse Compton and synchrotron emission from dark matter annihilations in galactic satellites
• Astrophysical Limits on Massive Dark Matter
• Thermal X-Ray Iron Line Emission from the Galactic Center Black Hole Sagittarius A*
• TeV $\gamma$-radiation from Dark Matter annihilation in the Galactic center
• Either neutralino dark matter or cuspy dark halos
• Challenges in Detecting Gamma-Rays From Dark Matter Annihilations in the Galactic Center
• Limits on Supersymmetric Dark Matter From EGRET Observations of the Galactic Center Region
• Extracting the Gamma Ray Signal from Dark Matter Annihilation in the Galactic Center Region
• Neutralinos and the Origin of Radio Halos in Clusters of Galaxies
• Have Atmospheric Cerenkov Telescopes Observed Dark Matter?
• The infrared L'-band view of the Galactic Center with NAOS-CONICA at VLT
• Detecting WIMPs in the Microwave Sky
• Gamma-ray and synchrotron emission from neutralino annihilation in the Large Magellanic Cloud
• A Possible Link Between the Galactic Center HESS Source and Sgr A*
• X-ray Radiation from the Annihilation of Dark Matter at the Galactic Center
• Impact of astrophysical processes on the gamma-ray background from dark matter annihilations
• A Dark Matter Candidate from an Extra (Non-Universal) Dimension
• Localising the H.E.S.S. Galactic Centre point source

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• The Galactic Center Massive Black Hole and Nuclear Star Cluster
• A review of indirect searches for particle dark matter
• Decaying Dark Matter can explain the electron/positron excesses
• Gamma-ray and radio tests of the e+e- excess from DM annihilations
• Constraints on Cosmological Dark Matter Annihilation from the Fermi-LAT Isotropic Diffuse Gamma-Ray Measurement
• Gamma-ray Constraints on Decaying Dark Matter and Implications for IceCube
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• Inverse Compton constraints on the Dark Matter e+e- excesses
• Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre
• Constraining Very Heavy Dark Matter Using Diffuse Backgrounds of Neutrinos and Cascaded Gamma Rays
• Robust implications on Dark Matter from the first FERMI sky gamma map
• Galactic Center Gamma-Ray Excess from Dark Matter Annihilation: Is There A Black Hole Spike?
• Gamma-ray and Radio Constraints of High Positron Rate Dark Matter Models Annihilating into New Light Particles
• Updated cosmic-ray and radio constraints on light dark matter: Implications for the GeV gamma-ray excess at the Galactic center
• Higgs in Space!
• Constraints on dark matter annihilation from AMS-02 results
• Dynamical constraints on a dark matter spike at the Galactic Centre from stellar orbits
• Gamma Rays from Clusters and Groups of Galaxies: Cosmic Rays versus Dark Matter
• Extragalactic Inverse Compton Light from Dark Matter Annihilation and the Pamela Positron Excess
• Thermal Relics in Modified Cosmologies: Bounds on Evolution Histories of the Early Universe and Cosmological Boosts for PAMELA
• Complementarity of direct dark matter detection and indirect detection through gamma-rays
• The EMU view of the Large Magellanic Cloud: Troubles for sub-TeV WIMPs
• Radio and gamma-ray constraints on dark matter annihilation in the Galactic center
• Searching for Dark Matter with X-ray Observations of Local Dwarf Galaxies
• Radio constraints on dark matter annihilation in the galactic halo and its substructures
• Conservative Constraints on Dark Matter from the Fermi-LAT Isotropic Diffuse Gamma-Ray Background Spectrum
• Constraining dark matter annihilation with the isotropic $\gamma$-ray background: updated limits and future potential
• Constraints on WIMP and Sommerfeld-Enhanced Dark Matter Annihilation from HESS Observations of the Galactic Center
• Constraints on dark matter annihilation by radio observations of M31
• Can multistate dark matter annihilation explain the high-energy cosmic ray lepton anomalies?
• Synchrotron Radiation from the Galactic Center in Decaying Dark Matter Scenario
• Annihilation vs. Decay: Constraining dark matter properties from a gamma-ray detection
• Galactic synchrotron emission from WIMPs at radio frequencies
• Search for Dark Matter
• Multiwavelength Analysis of Dark Matter Annihilation and RX-DMFIT
• Local Group dSph radio survey with ATCA (III): Constraints on Particle Dark Matter
• Galactic Center Radio Constraints on Gamma-Ray Lines from Dark Matter Annihilation
• Constraining the distribution of dark matter at the Galactic centre using the high-resolution Event Horizon Telescope
• The Isotropic Radio Background and Annihilating Dark Matter
• Indirect Detection of Dark Matter with gamma rays
• Constraints on Light WIMP candidates from the Isotropic Diffuse Gamma-Ray Emission
• Unique probe of dark matter in the core of M87 with the Event Horizon Telescope
• Ruling out thermal dark matter with a black hole induced spiky profile in the M87 galaxy
• Search for gamma-ray emission from $p$-wave dark matter annihilation in the Galactic Center
• The 130 GeV Fingerprint of Right-Handed Neutrino Dark Matter
• Complementarity of Galactic radio and collider data in constraining WIMP dark matter models
• Galactic Center Gamma-Ray Excess through a Dark Shower
• A Critical Reevaluation of Radio Constraints on Annihilating Dark Matter
• Cosmological Radio Emission induced by WIMP Dark Matter
• A Multi-Wavelength Analysis of Annihilating Dark Matter as the Origin of the Gamma-Ray Emission from M31
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• Polytropic dark matter flows illuminate dark energy and accelerated expansion
• Probing a dark matter density spike at the Galactic Center
• Testing the Dark Matter Interpretation of the PAMELA Excess through Measurements of the Galactic Diffuse Emission
• Complementarity of Indirect and Accelerator Dark Matter Searches
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• Study of the Gamma-ray Spectrum from the Galactic Center in view of Multi-TeV Dark Matter Candidates
• The Morphology of the Galactic Dark Matter Synchrotron Emission with Self-Consistent Cosmic Ray Diffusion Models
• Dark Energy: The Shadowy Reflection of Dark Matter?
• A conventional approach to the dark-energy concept
• Radio constraints on dark matter annihilation in Canes Venatici I with LOFAR
• Neutralino Dark Matter from Indirect Detection Revisited
• Separating astrophysical sources from indirect dark matter signals
• Exploring A Cosmic-Ray Origin of the Multi-wavelength Emission in M31
• Cosmic Frontier Indirect Dark Matter Detection Working Group Summary
• Updated galactic radio constraints on Dark Matter
• Revisiting the constraints on annihilating dark matter by radio observational data of M31
• Galactic-Centre Gamma Rays in CMSSM Dark Matter Scenarios
• The impact of propagation uncertainties on the potential Dark Matter contribution to the Fermi LAT mid-latitude gamma-ray data
• Constraining Dark Matter Properties with Gamma-Rays from the Galactic Center with Fermi-LAT
• Multi-messenger constraints on dark matter annihilation into electron-positron pairs
• Constraints on dark matter annihilation from the Event Horizon Telescope Observations of M87${}^{\star }$
• Multi-wavelength Searches for Particle Dark Matter
• Connecting the new H.E.S.S. diffuse emission at the Galactic center with the Fermi GeV excess: a combination of millisecond pulsars and heavy dark matter?
• Pressure from dark matter annihilation and the rotation curve of spiral galaxies
• Disentangling cosmic-ray and dark-matter induced gamma-rays in galaxy clusters?
• Signatures of leptophilic t-channel dark matter from active galactic nuclei
• Faint Dark Matter Annihilation Signals and the Milky Way's Supermassive Black Hole
• Searching for Dark Matter in Messier 33
• Flaring of tidally compressed dark-matter clumps
• The self-confinement of electrons and positrons from dark matter
• Constraints on annihilating dark matter in the Omega Centauri cluster
• Gamma-ray and Synchrotron Radiation from Dark Matter annihilations in Ultra-faint Dwarf Galaxies
• Illuminating Black Hole Shadow with Dark Matter Annihilation
• Radio bounds on the mixed dark matter scenarios of primordial black holes and WIMPs
• Analysing the radio flux density profile of the M31 galaxy: a possible dark matter interpretation
• Synchrotron Emission from Dark Matter in Galactic Subhalos. A Look into the Smith Cloud
• A new method to constrain annihilating dark matter
• Photons from Dark Matter in a (non-Universal) Extra Dimension model
• Testing the dark matter origin of the WMAP-Planck Haze with radio observations of Spiral Galaxies
• Constraining annihilating dark matter by x-ray data
• Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre
• Indirect evidence of GeV Dark Matter
• Signatures of Synchrotron Radiation from the Annihilation of Dark Matter at the Galactic Centre
• Neutralino Dark Matter as the Source of the WMAP Haze
• Radio Signal by Galactic Dark Matter
• WIMP constraints from black hole low-mass X-ray binaries