Microinstabilities associated with a high Mach number, perpendicular bow shock

1984 ◽  
Vol 37 (1-2) ◽  
Author(s):  
C.S. Wu ◽  
D. Winske ◽  
Y.M. Zhou ◽  
S.T. Tsai ◽  
P. Rodriguez ◽  
...  
Keyword(s):  
Mach Number ◽  
Bow Shock ◽  
High Mach Number ◽  
High Mach

Kinetic simulations of high Mach shocks: PIC simulations vs in-situ measurements

2021 ◽  
Author(s):  
Artem Bohdan ◽  
Martin Pohl ◽  
Jacek Niemiec ◽  
Paul J. Morris ◽  
Yosuke Matsumoto ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Mach Number ◽  
Supernova Remnants ◽  
Large Scale ◽  
Bow Shock ◽  
Electron Heating ◽  
Weibel Instability ◽  
High Mach Number ◽  
High Mach

<p>High-Mach-number collisionless shocks are found in planetary systems and supernova remnants (SNRs). Electrons are heated at these shocks to temperatures well above the Rankine–Hugoniot prediction. However, the processes responsible for causing the electron heating are still not well understood. We use a set of large-scale particle-in-cell simulations of nonrelativistic shocks in the high-Mach-number regime to clarify the electron heating processes. The physical behavior of these shocks is defined by ion reflection at the shock ramp. Further interactions between the reflected ions and the upstream plasma excites electrostatic Buneman and two-stream ion–ion Weibel instabilities. Electrons are heated via shock surfing acceleration, the shock potential, magnetic reconnection, stochastic Fermi scattering, and shock compression. The main contributor is the shock potential. The magnetic field lines become tangled due to the Weibel instability, which allows for parallel electron heating by the shock potential. The constrained model of electron heating predicts an ion-to-electron temperature ratio within observed values at SNR shocks and in Saturn’s bow shock. We also present evidence for field amplification by the Weibel instability. The normalized magnetic field strength strongly correlates with the Alfvenic Mach number, as is in-situ observed at Saturn's bow shock.</p>

Cassini observations of Saturn's high-mach number bow shock

2017 ◽  
Author(s):  
Ali H. Sulaiman ◽  
Adam Masters ◽  
David Burgess ◽  
Nick Sergis ◽  
Lukasz Stawarz ◽  
...  
Keyword(s):  
Mach Number ◽  
Bow Shock ◽  
High Mach Number ◽  
High Mach

Observations of the Earth's bow shock under high Mach number/high plasma beta solar wind conditions

1988 ◽  
Vol 15 (10) ◽  
pp. 1161-1164 ◽  
Author(s):  
Daniel Winterhalter ◽  
Margaret G. Kivelson
Keyword(s):  
Solar Wind ◽  
Mach Number ◽  
High Plasma ◽  
Bow Shock ◽  
High Mach Number ◽  
Earth’S Bow Shock ◽  
High Mach

The Uranian bow shock: Voyager 2 inbound observations of a high Mach number shock

1987 ◽  
Vol 92 (A8) ◽  
pp. 8603 ◽  
Author(s):  
Fran Bagenal ◽  
John W. Belcher ◽  
Edward C. Sittler ◽  
Ronald P. Lepping
Keyword(s):  
Mach Number ◽  
Bow Shock ◽  
High Mach Number ◽  
Voyager 2 ◽  
High Mach

An unseeded air MHD accelerator concept for high Mach number hypersonic propulsion testing

1989 ◽  
Author(s):  
GLOYD SIMMONS ◽  
GORDON NELSON ◽  
ROBERT HIERS ◽  
ARTHURB. WESTERN
Keyword(s):  
Mach Number ◽  
Hypersonic Propulsion ◽  
High Mach Number ◽  
High Mach

Interaction of high Mach-number shocks in laser-produced plasmas

2013 ◽  
Vol 9 (1) ◽  
pp. 187-191 ◽  
Author(s):  
T. Morita ◽  
Y. Sakawa ◽  
Y. Kuramitsu ◽  
S. Dono ◽  
H. Tanji ◽  
...  
Keyword(s):  
Mach Number ◽  
High Mach Number ◽  
High Mach
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