of the DAMPE 1.4 TeV peak according to the decaying dark matter model
to the recent Plank observation , non-baryonic dark matter (DM)
comprises ~26% of the universe’s mass energy . Distinguishing the
DM signal from the astrophysical contribution is the key to indirect
detection of DM . Dark Matter Particle Explorer (DAMPE) published
the highly accurate measurements of cosmic ray electron flux between
25 GeV and 4.6 TeV. A sharp peak exist at ~ 1.4 TeV. The decaying-DM
model adopt to explain the unexpected peak .
decay products of the local DM subhalo could contribute to the DMAPE
3 TeV and τ ～s
. The local DM subhalo should not be beyond 0.2kpc form solar system
with m =
also obtain constraints on DM lifetime and the distance of the local
DM subhalo by
with DAMPE data.
with PAN Xu
The CR-electrons plus positrons flux with best-fit
parameters,compared with the
and DAMPE data.
work by PAN
, ZHANG Cun,
etc. accepted by SCIENCE
CHINA-PHYSICS MECHANICS & ASTRONOMY, has
been published online