Origin of the DAMPE 1.4 TeV peak

Man Ho CHAN, Chak Man LEE

Research output: Contribution to journalArticle

Abstract

Recent accurate measurements of cosmic ray electron flux by the Dark Matter Particle Explorer (DAMPE) reveal a sharp peak structure near 1.4 TeV, which is difficult to explain by standard astrophysical processes. In this Letter, we propose a simple model that the enhanced dark matter annihilation via the e⁺e⁻ channel and with the thermal relic annihilation cross-section around the current nearest black hole (A0620-00) can satisfactorily account for the sharp peak structure. The predicted dark matter mass is ∼1.5–3 TeV. Copyright © 2019 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.
Original languageEnglish
Pages (from-to)L85-L88
JournalMonthly Notices of the Royal Astronomical Society
Volume486
Issue number1
Early online date02 May 2019
DOIs
Publication statusPublished - Jun 2019

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dark matter
electron flux
cosmic ray
cosmic rays
astrophysics
cross section
electron
cross sections
particle

Citation

Chan, M. H., & Lee, C. M. (2019). Origin of the DAMPE 1.4 TeV peak. Monthly Notices of the Royal Astronomical Society, 486(1), L85-L88. doi: 10.1093/mnrasl/slz062

Keywords

  • Dark matter