1.2k citations · 15.7k across the 225 of their papers we have counts for
8 papers · 1 filter
Neutrino Signals from Annihilating/Decaying Dark Matter in the Light of Recent Measurements of Cosmic Ray Electron/Positron Fluxes
Junji Hisano, Masahiro Kawasaki, Kazunori Kohri +1
The excess of cosmic-ray electron and positron fluxes measured by the PAMELA satellite and ATIC balloon experiments may be interpreted as the signals of the dark matter annihilatio…
Cosmological scenario of stop NLSP with gravitino LSP and the cosmic lithium problem
Kazunori Kohri, Yudi Santoso
The discrepancy on Li^7 and Li^6 abundances between the observational data and the standard Big Bang Nucleosynthesis theory prediction has been a nagging problem in astrophysics an…
X-Ray Observation of Very High Energy Gamma-Ray Source, HESS J1745-303, with Suzaku
Aya Bamba, Ryo Yamazaki, Kazunori Kohri +4
Suzaku observations of a TeV unidentified (unID) source, HESS J1745-303, are presented. A possible excess of neutral iron line emission is discovered, and is likely associated with…
Positron/Gamma-Ray Signatures of Dark Matter Annihilation and Big-Bang Nucleosynthesis
Junji Hisano, Masahiro Kawasaki, Kazunori Kohri +1
The positron excess observed by the PAMELA experiment may come from dark matter annihilation, if the annihilation cross section is large enough. We show that the dark matter annihi…
Gamma-ray spectrum of RX J1713.7-3946 in the Fermi era and future detection of neutrinos
Ryo Yamazaki, Kazunori Kohri, Hideaki Katagiri
The recently launched satellite, Fermi Gamma-ray Space Telescope, is expected to find out if cosmic-ray (CR) protons are generated from supernova remnants (SNRs), especially RX J17…
Big-bang nucleosynthesis and the relic abundance of dark matter in a stau-neutralino coannihilation scenario
Toshifumi Jittoh, Kazunori Kohri, Masafumi Koike +3
A scenario of the Big-Bang Nucleosynthesis is analyzed within the Minimal Supersymmetric Standard Model which is consistent with a stau-neutralino coannihilation scenario to explai…