Energetic particle transport at CME-driven shocks

W. K. Rice, G. Li, G. Zank

Research output: Contribution to conferenceAbstract

Abstract / Description of output

Interplanetary shocks, and in particular, CME-driven shocks, are effective particle accelerators and can often accelerate particles to 10's MeV and sometimes even ~ GeV. As a CME-driven shock propagates, expands and weakens, particles accelerated diffusively at the shock can escape upstream and downstream into the interplanetary medium. These escaping energized particles then propagate along the interplanetary magnetic field, experiencing only weak scattering from fluctuations in the interplanetary magnetic field (IMF). Here, we study the transport of energetic particles escaping upstream from a CME-driven shock using a Monte-Carlo approach. One advantage of this approach is that it allows us to follow single particle trajectory after the particle escapes from the shock front. Thus, we can easily investigate the characteristics (intensity profiles, spectra, angular distribution) of high-energy particles arriving at Earth. Results of the Monte-Carlo simulation for two reference shocks (a strong and a weak) will be presented. This work, together with our previous work on particle acceleration at shocks, will likely provide an basis for interpreting observations of high-energy particles made at 1 AU by ACE and WIND.
Original languageEnglish
Publication statusPublished - 1 Dec 2002
EventAmerican Geophysical Union, Fall Meeting 2002 - , United Kingdom
Duration: 6 Dec 200210 Dec 2002


ConferenceAmerican Geophysical Union, Fall Meeting 2002
Country/TerritoryUnited Kingdom

Keywords / Materials (for Non-textual outputs)

  • 7513 Coronal mass ejections
  • 7514 Energetic particles (2114)
  • 7807 Charged particle motion and acceleration
  • 7851 Shock waves


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