Spatial variation of accelerated pickup ions at co-rotating interaction regions

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The spatial distribution of accelerated particles at corotating interaction regions (CIR's) provides constraints on possible acceleration mechanisms. We point out some previously unrecognized aspects of acceleration at the forward and reverse shocks bounding CIRs, which support the idea that acceleration of pickup ions at these shocks is an important contributor to energetic ions in the inner heliosphere. We find that the acceleration of pickup ions is strongly favored at the reverse shock over the forward shock. Also, the scaling of the pickup-ion velocity distribution with respect to local solar wind speed is not necessarily useful within the CIR.

Original languageEnglish (US)
Pages (from-to)1723-1726
Number of pages4
JournalGeophysical Research Letters
Volume24
Issue number14
StatePublished - 1997

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spatial variation
shock
ion
sensors
ions
interactions
heliosphere
solar wind
spatial distribution
energetics
velocity distribution
wind velocity
scaling

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

Spatial variation of accelerated pickup ions at co-rotating interaction regions. / Giacalone, Joe; Jokipii, J. Randy.

In: Geophysical Research Letters, Vol. 24, No. 14, 1997, p. 1723-1726.

Research output: Contribution to journalArticle

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