Electron power-law spectra in solar and space plasmas

M Oka, J Birn, M Battaglia, CC Chaston, SM Hatch… - Space Science …, 2018 - Springer
Particles are accelerated to very high, non-thermal energies in solar and space plasma
environments. While energy spectra of accelerated electrons often exhibit a power law, it …

Observational evidence for stochastic shock drift acceleration of electrons at the Earth's bow shock

T Amano, T Katou, N Kitamura, M Oka, Y Matsumoto… - Physical review …, 2020 - APS
The first-order Fermi acceleration of electrons requires an injection of electrons into a mildly
relativistic energy range. However, the mechanism of injection has remained a puzzle both …

Electron scattering by low-frequency whistler waves at Earth's bow shock

M Oka, F Otsuka, S Matsukiyo, LB Wilson… - The Astrophysical …, 2019 - iopscience.iop.org
Electrons are accelerated to nonthermal energies at shocks in space and astrophysical
environments. While shock drift acceleration (SDA) has been considered a key process of …

Electron scattering by high-frequency whistler waves at Earth's bow shock

M Oka, LB Wilson III, TD Phan, AJ Hull… - The Astrophysical …, 2017 - iopscience.iop.org
Electrons are accelerated to non-thermal energies at shocks in space and astrophysical
environments. While different mechanisms of electron acceleration have been proposed, it …

In situ observation of electron acceleration by a double layer in the bow shock

CM Wang, SY Huang, ZG Yuan, K Jiang… - The Astrophysical …, 2023 - iopscience.iop.org
The importance of the electric potential along the field direction in the acceleration of
electrons in the quasi-perpendicular bow shock has been proposed. Nevertheless, the …

Relativistic electron shock drift acceleration in low mach number galaxy cluster shocks

S Matsukiyo, Y Ohira, R Yamazaki… - The Astrophysical …, 2011 - iopscience.iop.org
An extreme case of electron shock drift acceleration (SDA) in low Mach number collisionless
shocks is investigated as a plausible mechanism for the initial acceleration of relativistic …

A critical Mach number for electron injection in collisionless shocks

T Amano, M Hoshino - Physical Review Letters, 2010 - APS
Electron acceleration in collisionless shocks with arbitrary magnetic field orientations is
discussed. It is shown that the injection of thermal electrons into the diffusive shock …

[HTML][HTML] Effect of Electron and/or Ion Nonthermality on Dust Acoustic Wave Propagation in a Complex Plasma in Presence of Positively Charged Dust Grains …

S Sarkar, S Bhakta - Journal of Modern Physics, 2016 - scirp.org
In this paper we have developed a model to study the role of both electron and ion
nonthermalities on dust acoustic wave propagation in a complex plasma in presence of …

Recent Progress in the Theory of Electron Injection in Collisionless Shocks

T Amano, M Hoshino - Multi-scale Dynamical Processes in Space and …, 2012 - Springer
The injection problem in diffusive shock acceleration theory is discussed with particular
focus on electrons. The following issues are addressed: Why it has been considered to be …

Alfvén Waves in Dusty Proto-Stellar Accretion Disks

A de Almeida Vidotto, V Jatenco-Pereira - Multi-scale Dynamical …, 2012 - Springer
The magneto-rotational instability (MRI) is believed to be the mechanism responsible for a
magneto-hydrodynamic (MHD) turbulence that could lead to the accretion observed in proto …