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5 papers · 2 filters
Antiprotons from Dark Matter: Effects of a Position-Dependent Diffusion Coefficient
Maxim Perelstein, Bibhushan Shakya
Energetic antiprotons in cosmic rays can serve as an important indirect signature of dark matter. Conventionally, the antiproton flux from dark matter decays or annihilations is ca…
Black hole-neutron star mergers: effects of the orientation of the black hole spin
Francois Foucart, Matthew D. Duez, Lawrence E. Kidder +1
The spin of black holes in black hole-neutron star (BHNS) binaries can have a strong influence on the merger dynamics and the postmerger state; a wide variety of spin magnitudes an…
Dark Matter Identification with Gamma Rays from Dwarf Galaxies
Maxim Perelstein, Bibhushan Shakya
If the positron fraction and combined electron-positron flux excesses recently observed by PAMELA, FERMI and HESS are due to dark matter annihilation into lepton-rich final states,…
Papaloizou-Pringle Instability of Magnetized Accretion Tori
Wen Fu, Dong Lai
Hot accretion tori around a compact object are known to be susceptible to a global hydrodynamical instability, the so-called Papaloizou-Pringle (PP) instability, arising from the i…
Corotational Instability, Magnetic Resonances and Global Inertial-Acoustic Oscillations in Magnetized Black-Hole Accretion Discs
Wen Fu, Dong Lai
Low-order, non-axisymmetric p-modes (also referred as inertial-acoustic modes) trapped in the inner-most region of hydrodynamic accretion discs around black holes, are plausible ca…