Implications of the Voyager-1 particle spectra for acceleration at the termination shock

J. Kóta, J. R. Jokipii

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

6 Scopus citations

Abstract

We interpreted the precursor events observed by Voyager-1 2002-2004 in terms of the magnetic field line's crossing and re-crossing the shock between V-1 and the Sun, which may occur for a number of plausible reasons. We discuss the implications of such multiple intersection in the light of new findings of V-1 since crossing the shock in December 2004. We address the effects on the energy spectra and spatial variation, and stress that the shock will not produce a uniform power-law everywhere. Instead, a two-population spectrum, similar to that observed by Voyager-1, can be expected if field lines cross and recross the shock. The two-population spectra observed by V-1 can be interpreted as a signature of acceleration at different sites of the termination shock.

Original languageEnglish (US)
Title of host publicationPHYSICS OF THE INNER HELIOSHEATH
Subtitle of host publicationVoyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference
PublisherAmerican Institute of Physics Inc.
Pages171-176
Number of pages6
ISBN (Print)0735403554, 9780735403550
DOIs
StatePublished - Jan 1 2006
EventPHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference - Oahu, HI, United States
Duration: Mar 3 2006Mar 9 2006

Publication series

NameAIP Conference Proceedings
Volume858
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherPHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference
CountryUnited States
CityOahu, HI
Period3/3/063/9/06

Keywords

  • Energetic particles
  • Heliosheath
  • Termination shock

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Kóta, J., & Jokipii, J. R. (2006). Implications of the Voyager-1 particle spectra for acceleration at the termination shock. In PHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference (pp. 171-176). (AIP Conference Proceedings; Vol. 858). American Institute of Physics Inc.. https://doi.org/10.1063/1.2359323