Physics
Scientific paper
Jun 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..471..657v&link_type=abstract
The solar wind nine conference. AIP Conference Proceedings, Volume 471, pp. 657-660 (1999).
Physics
Particle Acceleration, Magnetosphere Interactions
Scientific paper
It is generally believed that type II bursts are caused by electrons accelerated at a shock front. Holman and Pesses (1) suggested that type II bursts can be caused by electrons accelerated by the shock drift mechanism. In order to explain a fine structure of type II bursts (herringbones), Zlobec et al. (2) presented a qualitative model where electrons are accelerated by a nearly perpendicular wavy shock front. We discuss this possibility quantitatively, namely we present an analytical solution of electron motion in a wavy shock front. Then we perform a parametric study in order to determine which parameters of the model are necessary for an appropriate electron energy gain. The calculations show that electrons are rarely reflected more than once at the wavy shock front and their final energy is mostly 1-3 times the initial one. This is similar to the theoretical acceleration gain of reflected electrons at the Earth's bow shock. In the present case all electrons are eventually transmitted downstream where they form two downstream beams.
Karlicky Marian
Vandas Marek
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