BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Electron Injection at Quasi-Perpendicular Supernova Remnant Shocks
DTSTART;VALUE=DATE-TIME:20070707T134200Z
DTEND;VALUE=DATE-TIME:20070707T135400Z
DTSTAMP;VALUE=DATE-TIME:20261011T150257Z
UID:indico-contribution-244@cern.ch
DESCRIPTION:Speakers: Mr. AMANO\, Takanobu (University of Tokyo)\nElectron
  injection process at high Mach number collisionless quasiperpendicular sh
 ock\nwaves is investigated by means of one-dimensional electromagnetic par
 ticle-in-cell\nsimulations. We find that energetic electrons are generated
  through the following two\nsteps: (1) electrons are accelerated nearly pe
 rpendicular to the local magnetic field\nby shock surfing acceleration at 
 the leading edge of the shock transition region. (2)\nthe preaccelerated e
 lectrons are further accelerated by shock drift acceleration. As\na result
 \, energetic electrons are preferentially reflected back to the upstream.\
 nShock surfing acceleration provides sufficient energy required for the re
 flection.\nTherefore\, it is important not only for the energization proce
 ss by itself\, but also\nfor triggering the secondary acceleration process
 . We also present a theoretical\nmodel of the two-step acceleration mechan
 ism based on the simulation results\, which\ncan predict the injection eff
 iciency for subsequent diffusive shock acceleration\nprocess. We show that
  the injection efficiency obtained by the present model agrees\nwell with 
 the value obtained by Chandra X-ray observations of SN 1006. At typical\ns
 upernova remnant shocks\, energetic electrons injected by the present mech
 anism can\nself-generate upstream Alfven waves\, which scatter the energet
 ic electrons themselves.\n\nhttps://indico.nucleares.unam.mx/event/4/sessi
 on/43/contribution/244
LOCATION:Merida\, Mexico Uxmal + Tulum (Holiday Inn)
URL:https://indico.nucleares.unam.mx/event/4/session/43/contribution/244
END:VEVENT
END:VCALENDAR