Speaker
Prof.
Jacek Niemiec
(Institute of Nuclear Physics Polish Academy of Sciences)
Description
The formation, electromagnetic structure, and the injection of suprathermal particles into a Fermi-type acceleration at collisionless shocks constitute important problems of high-energy astrophysics. We report on recent particle-in-cell studies of high Mach-number nonrelativistic perpendicular shocks in applications to young supernova remnants. We discuss a nonlinear shock structure mediated by Weibel-type filamentation instabilities, shock reformation and rippling, and conditions leading to heating and efficient electron and ion pre-acceleration. First results of oblique quasi-perpendicular shock studies will also be presented.
Primary author
Prof.
Jacek Niemiec
(Institute of Nuclear Physics Polish Academy of Sciences)
Co-authors
Mr
Artem Bohdan
(Institute of Nuclear Physics PAS)
Dr
Ken-Ichi Nishikawa
(Univeristy of Alabama in Huntsville)
Prof.
Martin Pohl
(University of Potsdam and DESY-Zeuthen)
Dr
Oleh Kobzar
(Institute of Nuclear Physics PAS)
Dr
Volkmar Wieland
(University of Potsdam)
