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6 papers · 1 filter
Prospects for Detecting Neutrino Signals from Annihilating/Decaying Dark Matter to Account for the PAMELA and ATIC results
Jia Liu, Peng-fei Yin, Shou-hua Zhu
Recent PAMELA data show that positron fraction has an excess above several GeV while anti-proton one is not. Moreover ATIC data indicates that electron/positron flux have a bump fr…
Discriminating different scenarios to account for the cosmic excess by synchrotron and inverse Compton radiation
Juan Zhang, Xiao-jun Bi, Jia Liu +4
The excesses of the cosmic positron fraction recently measured by PAMELA and the electron spectra by ATIC, PPB-BETS, Fermi and H.E.S.S. indicate the existence of primary electron a…
X-Ray Flares of Gamma-Ray Bursts: Quakes of Solid Quark Stars?
Renxin Xu, Enwei Liang
We propose a star-quake model to understand X-ray flares of both long and short Gamma-ray bursts (GRBs) in a solid quark star regime. Two kinds of central engines for GRBs are avai…
Muon Charge Ratio of Ultrahigh Energy Cosmic Rays
Bo-Qiang Ma
The muon charge ratio of ultrahigh energy cosmic rays may provide information to detect the composition of the primary cosmic rays. We propose to extract the charge information of…
Constraints on the Dark Matter Annihilations by Neutrinos with Substructure Effects Included
Peng-fei Yin, Jia Liu, Qiang Yuan +2
Dark matter (DM) annihilations in the Galaxy may produce high energy neutrinos, which can be detected by the neutrino telescopes, for example IceCube, ANTARES and Super-Kamiokande.…
A Polytropic Model of Quark Stars
X. Y. Lai, R. X. Xu
A polytropic quark star model is suggested in order to establish a general framework in which theoretical quark star models could be tested by observations. The key difference betw…