Anomalous cosmic rays in the heliosheath: Simulation with a blunt termination shock

J. Kóta, J. R. Jokipii

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Scopus citations

Abstract

We present numerical simulations modeling acceleration of ACRs at a blunt termination shock with the spiral field lines intersecting the shock multiple times. The 2-D model includes parallel and perpendicular diffusion. Our results confirm the qualitative expectations: the nose segment of the blunt shock is inefficient to accelerate particles to ACR energies, which results in a continuing increase of the ACR flux and a gradual unfolding of the ACR spectrum behind the shock, as seen by Voyager-1. We also present a simple analytically tractable test-case to illustrate physical effects at a 2-D shock with a structure along the shock-front.

Original languageEnglish (US)
Title of host publicationParticle Acceleration and Transport in the Heliosphere and Beyond - 7th Annual International Astrophysics Conference
Pages397-403
Number of pages7
DOIs
StatePublished - Sep 29 2008
Event7th Annual International Astrophysics Conference on Particle Acceleration and Transport in the Heliosphere and Beyond - Kauai, HI, United States
Duration: Mar 7 2008Mar 13 2008

Publication series

NameAIP Conference Proceedings
Volume1039
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other7th Annual International Astrophysics Conference on Particle Acceleration and Transport in the Heliosphere and Beyond
CountryUnited States
CityKauai, HI
Period3/7/083/13/08

Keywords

  • Energetic particles
  • Heliosheath
  • Termination shock

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Kóta, J., & Jokipii, J. R. (2008). Anomalous cosmic rays in the heliosheath: Simulation with a blunt termination shock. In Particle Acceleration and Transport in the Heliosphere and Beyond - 7th Annual International Astrophysics Conference (pp. 397-403). (AIP Conference Proceedings; Vol. 1039). https://doi.org/10.1063/1.2982477