Gamma ray constraints on Decaying Dark Matter

Abstract

We derive new bounds on decaying Dark Matter from the gamma ray measurements of (i) the isotropic residual (extragalactic) background by Fermi and (ii) the Fornax galaxy cluster by HESS. We find that those from (i) are among the most stringent constraints currently available, for a large range of DM masses and a variety of decay modes, excluding half-lives up to ~10^26 to few 10^27 seconds. In particular, they rule out the interpretation in terms of decaying DM of the e^\pm spectral features in Pamela, Fermi and HESS, unless very conservative choices are adopted. We also discuss future prospects for CTA bounds from Fornax which, contrary to the present HESS constraints of (ii), may allow for an interesting improvement and may become better than those from the current or future extragalactic Fermi data.

18 pages, 3 figures. v2: constraint procedure slightly modified, conclusions unchanged; some references and some clarifications added; matches version published on PRD

References in corpus (20)

• Observation of an anomalous positron abundance in the cosmic radiation
• The Spectrum of the Isotropic Diffuse Gamma-Ray Emission Derived From First-Year Fermi Large Area Telescope Data
• Weak Corrections are Relevant for Dark Matter Indirect Detection
• The cosmic-ray electron flux measured by the PAMELA experiment between 1 and 625 GeV
• Decaying Dark Matter can explain the electron/positron excesses
• Fermi LAT Search for Dark Matter in Gamma-ray Lines and the Inclusive Photon Spectrum
• Constraints on the Galactic Halo Dark Matter from Fermi-LAT Diffuse Measurements
• PAMELA data and leptonically decaying dark matter
• Constraints on Dark Matter Annihilation in Clusters of Galaxies with the Fermi Large Area Telescope
• Gamma-Rays from Decaying Dark Matter
• Cosmic rays from Leptonic Dark Matter
• Gamma rays from clusters of galaxies
• Model-independent dark matter annihilation bound from the diffuse gamma ray flux
• Decaying Dark Matter as a Probe of Unification and TeV Spectroscopy
• Electroweak Bremsstrahlung in Dark Matter Annihilation
• Gamma Rays from Clusters and Groups of Galaxies: Cosmic Rays versus Dark Matter
• Decaying Hidden Gauge Boson and the PAMELA and ATIC/PPB-BETS Anomalies
• Decaying dark matter: a stacking analysis of galaxy clusters to improve on current limits
• Gamma-rays from Nearby Clusters: Constraints on Selected Decaying Dark Matter Models
• Secular evolution of galaxies and galaxy clusters in decaying dark matter cosmology

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• Constraining dark matter late-time energy injection: decays and p-wave annihilations
• Boosted Dark Matter in IceCube and at the Galactic Center
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• New Limits on the Dark Matter Lifetime from Dwarf Spheroidal Galaxies using Fermi-LAT
• Novel Constraints on Mixed Dark-Matter Scenarios of Primordial Black Holes and WIMPs
• AMS-02 positron excess: new bounds on dark matter models and hint for primary electron spectrum hardening
• Linear cosmological constraints on 2-body decaying dark matter scenarios and the $S_8$ tension
• CMB photons shedding light on dark matter
• The last Complex WIMPs standing
• Super heavy thermal dark matter
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• Dynamical Dark Matter and the Positron Excess in Light of AMS
• Dark matter with two- and many-body decays and supernovae type Ia
• Connecting neutrino physics with dark matter
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• Indirect dark matter searches in the dwarf satellite galaxy Ursa Major II with the MAGIC Telescopes
• Constraints on Dark Matter Annihilation/Decay from the Isotropic Gamma-Ray Background
• Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data
• Boosted Dark Matter and its implications for the features in IceCube HESE data
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• Indirect and direct signatures of Higgs portal decaying vector dark matter for positron excess in cosmic rays
• Imprint of Multi-component Dark Matter on AMS-02
• PAMELA and FERMI-LAT limits on the neutralino-chargino mass degeneracy
• Probing superheavy dark matter with gravitational waves
• Long-lived higgsinos as probes of gravitino dark matter at the LHC
• Fermi-LAT kills dark matter interpretations of AMS-02 data. Or not?
• Dark matter decays from non-minimal coupling to gravity
• Gravitino Dark Matter and low-scale Baryogenesis
• Axion Dark Matter from Lepton flavor-violating Decays
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• An A4 x Z4 model for neutrino mixing
• Decaying Asymmetric Dark Matter Relaxes the AMS-Fermi Tension
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• AMS-02 Positron Excess and Indirect Detection of Three-body Decaying Dark Matter
• The DAMPE excess and gamma-ray constraints
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• TeV Dark Matter Searches in the Extragalactic Gamma-Ray Sky
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• Constraints on the primordial power spectrum of small scales using the neutrino signals from the dark matter decay
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• Interpretation of the cosmic ray positron and electron excesses with an annihilating-decaying dark matter scenario
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• Search for decaying heavy dark matter in an effective interaction framework: a comparison of $\gamma$-ray and radio observations
• Improved Constraints on Dark Matter Annihilations Around Primordial Black Holes
• The case for three-body decaying dark matter
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• A convolutional-neural-network estimator of CMB constraints on dark matter energy injection
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• Dark Matter Annihilation and Decay Searches with the High Altitude Water Cherenkov (HAWC) Observatory
• Confronting cosmic ray electron and positron excesses with hybrid triplet Higgs portal dark matter
• The E6 route to multicomponent dark matter
• Closing the window on WIMP Dark Matter
• Dark Matter and Galaxy Cross-Correlations with the Cherenkov Telescope Array Observatory
• An Interpretation of the Cosmic Ray $e^{+}+e^{-}$ Spectrum from 10 GeV to 3 TeV Measured by CALET on the ISS
• Multicomponent Dark Matter in the Light of CALET and DAMPE
• Probing the anomalous positron fraction origin with fully leptonic decaying gravitino dark matter candidates
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