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Magnetic field amplification by collisionless shocks in partially ionized plasmas
Yutaka Ohira
In this paper, we study shock structures of collisionless shocks in partially ionized plasmas by means of two-dimensional hybrid simulations, where the shock is a perpendicular sho…
Evidence for Thermal X-Ray Line Emission from the Synchrotron-Dominated Supernova Remnant RX J1713.7-3946
Satoru Katsuda, Fabio Acero, Nozomu Tominaga +14
We report the first detection of thermal X-ray line emission from the supernova remnant (SNR) RX J1713.7-3946, the prototype of the small class of synchrotron dominated SNRs. A sof…
Cosmic-Ray Hardenings in the Light of AMS-02
Yutaka Ohira, Norita Kawanaka, Kunihito Ioka
Recent precise observations of cosmic rays (CRs) by AMS-02 experiment clearly show (1) harder spectra of helium and carbon compared to protons by , and (2) concav…
Electron acceleration with improved Stochastic Differential Equation method: cutoff shape of electron distribution in test-particle limit
Ryo Yamazaki, Tatsuo Yoshida, Yuka Tsuchihashi +3
We develop a method of stochastic differential equation to simulate electron acceleration at astrophysical shocks. Our method is based on Itô's stochastic differential equations co…