10 citations · 23 across the 9 of their papers we have counts for
5 papers · 1 filter
Very-high-energy gamma rays from cosmic rays escaping from Galactic black hole binaries
Yutaka Ohira
We solve the cosmic-ray diffusion around a Galactic black hole binary (microquasars) by considering the finite size of the escape region and the continuous cosmic-ray injection. We…
Laser-Driven Proton-Only Acceleration in a Multicomponent Near-Critical-Density Plasma
Y. Sakawa, H. Ishihara, S. N. Ryazantsev +26
An experimental investigation of collisionless shock ion acceleration is presented using a multicomponent plasma and a high-intensity picosecond duration laser pulse. Protons are t…
Collisionless shock in a relativistically hot unmagnetized electron-positron plasma
Kamiido Kazuki, Ohira Yutaka
In this work, we investigate collisionless shocks propagating in a relativistically hot unmagnetized electron-positron plasmas. We estimate the dissipation fraction at shocks in th…
Particle acceleration and magnetic field amplification by relativistic shocks in inhomogeneous media
Kanji Morikawa, Yutaka Ohira, Takumi Ohmura
Particle acceleration and magnetic field amplification in relativistic shocks propagating in inhomogeneous media are investigated by three-dimensional magnetohydrodynamical (MHD) s…
Evolution of secondary electron spectrum during cosmic-ray discharge in the universe
Yutaka Ohira
We recently found that streaming cosmic rays (CRs) induce a resistive electric field that can accelerate secondary electrons produced by CR ionization. In this work, we study the e…