Fermi LAT search for dark matter in gamma-ray lines and the inclusive photon spectrum
By F. C. M. Ackermann, M. Ajello, A. Albert, L. Baldini, G. Barbiellini, K. Bechtol, R. Bellazzini, B. Berenji, R. Blandford, E. Bloom and 109 more. Physical Review D, 2012
272 citations recorded by the source corpus.
Dark matter particle annihilation or decay can produce monochromatic gamma-ray lines and contribute to the diffuse gamma-ray background. Flux upper limits are presented for gamma-ray spectral lines from 7 to 200 GeV and for the diffuse gamma-ray background from 4.8 GeV to 264 GeV obtained from two years of Fermi Large Area Telescope data integrated over most of the sky. We give cross section upper limits and decay lifetime lower limits for dark matter models that produce gamma-ray lines or contribute to the diffuse spectrum, including models proposed as explanations of the PAMELA and Fermi cosmic-ray data.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/d1ca26f51a5ae5d832a9b99c09f9a4736748f7a5
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Citations in the corpus
- Dark matter annihilations and decays after the AMS-02 positron measurements (2013, background): “[51] from measurements of the diffuse gamma-ray background (which are strongly correlated to the positron limits since both the gamma-ray and the positron fluxes have the same source term), as well as the limits on the cross section reported in Ref.”
- Constraining light dark matter with diffuse X-ray and gamma-ray observations (2013, methodology): “The lifetime of Weak-scale DM is constrained from observations with the Fermi Large Area Telescope (Fermi LAT) to τ & 1026 sec [28–32], many orders of magnitude larger than the age of the Universe.”
- Optimized dark matter searches in deep observations of Segue 1 with MAGIC (2013, methodology): “Upper limits on 〈σannv〉 for DM annihilation into a photon and a Z boson, from the Segue 1 observations with MAGIC (red line), compared with the exclusion curve from 2 years of the GC region observations with Fermi -LAT (blue line, [66]).”
- The landscape of QCD axion models (2020, background): “Decays after recombination would give rise to free-streaming photons visible in the diffuse gamma ray background [497], and tight constraints from Fermi LAT [498] allow to exclude τQ ∼ (10(13) ÷ 10(26)) s.”
- Search for gamma-ray spectral lines with the Fermi Large Area Telescope and dark matter implications (2013, unknown): “Following the approach used in previous line searches published by the LAT Collaboration, we use a sum of Gaussians to parametrize the energy dispersion at any given energy, averaging over the LAT FOV and combining front- and back-converting events [14].”