Reformation of perpendicular shocks: EMHD-hybrid Simulations

Details Reformation of perpendicular shocks: EMHD-hybrid Simulations Reformation of perpendicular shocks: EMHD-hybrid Simulations

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsm52b0579p&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SM52B-0579

Other

2154 Planetary Bow Shocks, 2752 Mhd Waves And Instabilities, 2753 Numerical Modeling

Scientific paper

We study properties of one-dimensional perpendicular shock using hybrid simulations. Standard hybrid simulations treat ions as particles and electrons as a massles isothermal fluid. Ohm law in our model is extended so the time evolution of both the electron parallel and perpendicular temperature is described by an EMHD model. Many numerical studies were already devoted to the properties of one-dimensional perpendicular shocks using particle in cell (PIC) and hybrid codes. It is known that shocks for colder and/or higher Mach numbers show a nonstationary feature, namely a periodic reaperence of a new shock front. These nonstationary shocks have shock front gradient scales governed only by the spatial resolution of the numerical model. We study properties of these shocks by an extended hybrid code and compare the results with previous simulations.

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