Charged-particle acceleration at the heliospheric termination shock

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

Abstract

The paradigm of the diffusive acceleration of pickup ions by the heliospheric termination shock to form the anomalous cosmic rays (ACR) has successfully accounted for many observed features of the ACR, including electrical charge, composition, energy spectrum, time variations and spatial gradients. Recent observations from the Voyager 1 spacecraft as it approaches the heliospheric termination shock, and other data, have forced a more detailed confrontation between this theoretical paradigm and observations. This has provided new insights and constraints concerning the structure of the heliospheric termination shock. In particular, the observed three-dimansional vector anisotropy provides valuable constraints. Here it is shown that all three components of the anisotropy may be understood if the global shape of the termination shock is as expected from simulation and analogy.

Original languageEnglish (US)
Title of host publicationAIP Conference Proceedings
Pages283-288
Number of pages6
Volume781
DOIs
StatePublished - Aug 1 2005
EventTHE PHYSICS OF COLLISIONLESS SHOCKS: 4th Annual IGPP International Astrophysics Conference - Palm Springs, CA, United States
Duration: Feb 26 2005Mar 3 2005

Other

OtherTHE PHYSICS OF COLLISIONLESS SHOCKS: 4th Annual IGPP International Astrophysics Conference
CountryUnited States
CityPalm Springs, CA
Period2/26/053/3/05

Fingerprint

particle acceleration
charged particles
shock
cosmic rays
Voyager 1 spacecraft
anisotropy
energy spectra
gradients
sensors
ions
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Charged-particle acceleration at the heliospheric termination shock. / Jokipii, J. Randy.

AIP Conference Proceedings. Vol. 781 2005. p. 283-288.

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

Jokipii, JR 2005, Charged-particle acceleration at the heliospheric termination shock. in AIP Conference Proceedings. vol. 781, pp. 283-288, THE PHYSICS OF COLLISIONLESS SHOCKS: 4th Annual IGPP International Astrophysics Conference, Palm Springs, CA, United States, 2/26/05. https://doi.org/10.1063/1.2032710
Jokipii, J. Randy. / Charged-particle acceleration at the heliospheric termination shock. AIP Conference Proceedings. Vol. 781 2005. pp. 283-288
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