50 citations · 168 across the 7 of their papers we have counts for
7 papers
Injection process of pickup ion acceleration at an oblique heliospheric termination shock
S. Matsukiyo, Y. Matsumoto
Injection process of pickup ion acceleration at a heliospheric termination shock is investigated. Using two-dimensional fully kinetic particle-in-cell simulation, accelerated picku…
Radiation MHD Simulations of Soft X-ray Emitting Regions in Changing Look AGN
Taichi Igarashi, Hiroyuki R. Takahashi, Tomohisa Kawashima +3
Strong soft X-ray emission called soft X-ray excess is often observed in luminous active galactic nuclei (AGN). It has been suggested that the soft X-rays are emitted from a warm (…
Enhanced Magnetic Field Amplification by Ion-Beam Weibel Instability in Weakly Magnetized Astrophysical Shocks
Taiki Jikei, Takanobu Amano, Yosuke Matsumoto
We examine the evolution of ion-beam Weibel instability at strong collisionless shocks in weakly magnetized media. We find that a finite background magnetic field substantially aff…
Linearly-polarized Coherent Emission from Relativistic Magnetized Ion-electron Shocks
Masanori Iwamoto, Yosuke Matsumoto, Takanobu Amano +2
Fast radio bursts (FRBs) are millisecond transient astrophysical phenomena and bright at radio frequencies. The emission mechanism, however, remains unsolved yet. One scenario is a…
Magnetic field amplification by the Weibel instability at planetary and astrophysical high-Mach-number shocks
Artem Bohdan, Martin Pohl, Jacek Niemiec +5
Collisionless shocks are ubiquitous in the Universe and often associated with strong magnetic field. Here we use large-scale particle-in-cell simulations of non-relativistic perpen…
Electron acceleration in a nonrelativistic shock with very high Alfvén Mach number
Y. Matsumoto, T. Amano, M. Hoshino
Electron acceleration associated with various plasma kinetic instabilities in a nonrelativistic, very-high-Alfvén Mach-number () shock is revealed by means of a two-di…
The Kelvin-Helmholtz instability in Orion: a source of turbulence and chemical mixing
Olivier Berne, Yosuke Matsumoto
Hydrodynamical instabilities are believed to power some of the small scale (0.1-10 pc) turbulence and chemical mixing in the interstellar medium. Identifying such instabilities has…