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- The University of TokyoJP104 papers
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- National Astronomical Observatory of JapanJP57 papers
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10 papers · 1 filter
Synchrotron Radiation from the Galactic Center in Decaying Dark Matter Scenario
Koji Ishiwata, Shigeki Matsumoto, Takeo Moroi
We discuss the synchrotron radiation flux from the Galactic center in unstable dark matter scenario. Motivated by the anomalous excess of the positron fraction recently reported by…
Chromospheric magnetic reconnection: Two-fluid simulations of coalescing current loops
P. D. Smith, J. I. Sakai
Aims: To investigate magnetic reconnection rates during the coalescence of two current loops in the solar chromosphere, by altering the neutral-hydrogen to proton density ratio, io…
Particle-In-Cell simulations of circularly polarised Alfvén wave phase mixing: a new mechanism for electron acceleration in collisionless plasmas
David Tsiklauri, Jun-Ichi Sakai, Shinji Saito
In this work we used Particle-In-Cell simulations to study the interaction of circularly polarised Alfvén waves with one dimensional plasma density inhomogeneities transverse to th…
Phase mixing of shear Alfven waves as a new mechanism for electron acceleration in collisionless, kinetic plasmas
David Tsiklauri, Jun-Ichi Sakai, Shinji Saito
Particle-In-Cell (kinetic) simulations of shear Alfvén wave interaction with one dimensional, across the uniform magnetic field, density inhomogeneity (phase mixing) in collisionle…
General Relativistic Magnetohydrodynamic Simulations of Collapsars: Rotating Black Hole Cases
Yosuke Mizuno, Shoichi Yamada, Shinji Koide +1
We have performed 2.5-dimensional general relativistic magnetohydrodynamic (MHD) simulations of collapsars including a rotating black hole. This paper is an extension of our previo…
A General Relativistic Magnetohydrodynamics Simulation of Jet Formation
K. -I. Nishikawa, G. Richardson, S. Koide +4
We have performed a fully three-dimensional general relativistic magnetohydrodynamic (GRMHD) simulation of jet formation from a thin accretion disk around a Schwarzschild black hol…