. "Two-dimensional PIC simulations are used for analyzing in detail different nonstationary behaviors of a perpendicular supercritical shock. A recent study by Hellinger et al. (2007) has shown that the front of a supercritical shock can be dominated by the emission of large-amplitude whistler waves. These waves inhibit the self-reformation driven by the reflected ions; then, the shock front appears almost quasi-stationary. The present study stresses new complementary results. For a fixed \u03B2i value, the whistler waves emission persists for high MA above a critical Mach number. The quasi-stationarity is only apparent and disappears when considering the full 3-D field profiles. For lower MA, the self-reformation is retrieved and becomes dominant as the amplitude of the whistler waves becomes negligible. There exists a transition regime in MA within which both processes compete each other." . "A03217" . "[D8D5B3CF0DB9]" . "Nonstationarity of a two-dimensional perpendicular shock: Competing mechanisms" . . . "Nonstationarity of a two-dimensional perpendicular shock: Competing mechanisms"@en . "Nonstationarity of a two-dimensional perpendicular shock: Competing mechanisms"@en . . "RIV/68378289:_____/09:00323282" . "Collisionless shocks; self-reformation; nonlinear waves"@en . "Nonstationarity of a two-dimensional perpendicular shock: Competing mechanisms" . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . . "114" . . . . . "Savoini, P." . "Hellinger, Petr" . . . "Nestacionarita dvoudimenzion\u00E1ln\u00EDch kolm\u00FDch r\u00E1zov\u00FDch vln: Soupe\u0159\u00EDci mechanismy"@cs . "329748" . "Journal of Geophysical Research" . "0148-0227" . . "Nestacionarita dvoudimenzion\u00E1ln\u00EDch kolm\u00FDch r\u00E1zov\u00FDch vln: Soupe\u0159\u00EDci mechanismy"@cs . . "Pomoc\u00ED dvoudimenzion\u00E1ln\u00EDch PIC simulac\u00ED je detailn\u011B studov\u00E1no nestacion\u00E1rn\u00ED chov\u00E1n\u00ED kolm\u00E9 r\u00E1zov\u00E9 vlny. Ned\u00E1vn\u00E1 studie (Hellinger et al., 2007) uk\u00E1zala, \u017Ee \u010Delo superkritick\u00E9 r\u00E1zov\u00E9 vlny m\u016F\u017Ee b\u00FDt dominov\u00E1n emis\u00ED siln\u00FDch hvizdov\u00FDch vln. Tyto vlny zamezuj\u00ED reformaci zp\u016Fsobenou odra\u017Een\u00FDmi ionty a r\u00E1zov\u00E1 vlna se zd\u00E1 b\u00FDti kvazistacion\u00E1rn\u00ED. Tato studie zd\u016Fraz\u0148uje kompement\u00E1rn\u00ED v\u00FDsledky. Pro dan\u00E9 \u03B2i emise hvizdov\u00FDch vln p\u0159etrv\u00E1v\u00E1 pro vysok\u00E1 MA nad ur\u010Dit\u00FDm kritick\u00FDm Machovsk\u00FDm \u010D\u00EDslem. Kvazistacinarita je jen zd\u00E1nliv\u00E1 a zmiz\u00ED, pokud se uva\u017Euj\u00ED pln\u011B 3-D profily pol\u00ED. Pro ni\u017E\u0161\u00ED MA je reformace znovu pozorov\u00E1na a je dominantn\u00ED, kdy\u017E je amplitude hvizdov\u00FDch vln zanedbateln\u00E1. Existuje p\u0159echodov\u00E1 oblast Machovsk\u00FDch \u010D\u00EDsel, kde oba procesy soupe\u0159\u00ED"@cs . "RIV/68378289:_____/09:00323282!RIV09-AV0-68378289" . "Two-dimensional PIC simulations are used for analyzing in detail different nonstationary behaviors of a perpendicular supercritical shock. A recent study by Hellinger et al. (2007) has shown that the front of a supercritical shock can be dominated by the emission of large-amplitude whistler waves. These waves inhibit the self-reformation driven by the reflected ions; then, the shock front appears almost quasi-stationary. The present study stresses new complementary results. For a fixed \u03B2i value, the whistler waves emission persists for high MA above a critical Mach number. The quasi-stationarity is only apparent and disappears when considering the full 3-D field profiles. For lower MA, the self-reformation is retrieved and becomes dominant as the amplitude of the whistler waves becomes negligible. There exists a transition regime in MA within which both processes compete each other."@en . . . "000264687100002" . . "Tr\u00E1vn\u00ED\u010Dek, Pavel" . . "Lemb\u00E8ge, B." . "4"^^ . "P(IAA300420602), P(IAA300420702), Z(AV0Z30420517)" . . "21"^^ . "2"^^ .