Antiproton and Radio Constraints on the Dark Matter Interpretation of the Fermi Gamma Ray Observations of the Galactic Center

2009/11/05 by Torsten Bringmann, Bringmann, Torsten · 3 citations
Physics and Astronomy · #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle Detector Development and Performance #Radioactive Decay and Measurement Techniques #astro-ph.CO #hep-ph

paper · pdf · doi:10.48550/arxiv.0911.1124

4 pages, 2 figures

arxiv created 2009/11/05 · openalex publication_date 2009/11/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Recently, it was suggested that the gamma rays observed by the Fermi Gamma Ray Space Telescope from the direction of the galactic center could surprisingly well be described by a dark matter annihilation scenario, both in terms of their angular distribution and energy spectrum. Here, I point out that such a scenario would be in considerable tension with existing antiproton data, in particular the new PAMELA measurements. Radio data are even more constraining, thus disfavoring the dark matter hypothesis and making an astrophysical explanation of the observations much more plausible.

Cited by

• A light scalar WIMP through the Higgs portal?
• GAMMA RAYS FROM DARK MATTER
• Updated cosmic-ray and radio constraints on light dark matter: Implications for the GeV gamma-ray excess at the Galactic Center

Related

• Do Galactic Antiprotons Come from Decaying Dark Matter?
• Possible Dark Matter Signals from Antiprotons, Positrons, X-rays and Gamma-rays
• Shedding Light on Dark Matter with Fermi LAT Data on Gamma Rays
• Constraints on the Galactic Dark Matter signal from the Fermi-LAT measurement of the diffuse gamma-ray emission
• Possible Evidence For Dark Matter Annihilation In The Inner Milky Way From The Fermi Gamma Ray Space Telescope