Observations of suprathermal ions in association with SLAMS

Joe Giacalone; Steven J. Schwartz; David Burgess

doi:10.1029/93GL00067

Observations of suprathermal ions in association with SLAMS

Joe Giacalone, Steven J. Schwartz, David Burgess

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

We present observations of 1.4–20 keV ions in association with short large amplitude magnetic structures (SLAMS) using high time resolution AMPTE/UKS data near the quasi‐parallel Earth's bow shock. The observations show a strong temporal gradient in the suprathermal ion pressure as the convecting SLAMS passes. We discuss these observations in the context of recent simulation studies which predict that SLAMS are the result of the steepening of a ULF wave as it passes through an energetic particle pressure gradient and present a simple picture illustrating the relationship between this spatial gradient and the observed temporal one.

Original language	English (US)
Pages (from-to)	149-152
Number of pages	4
Journal	Geophysical Research Letters
Volume	20
Issue number	2
DOIs	https://doi.org/10.1029/93GL00067
State	Published - Jan 22 1993
Externally published	Yes

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

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10.1029/93GL00067

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abstract = "We present observations of 1.4–20 keV ions in association with short large amplitude magnetic structures (SLAMS) using high time resolution AMPTE/UKS data near the quasi‐parallel Earth's bow shock. The observations show a strong temporal gradient in the suprathermal ion pressure as the convecting SLAMS passes. We discuss these observations in the context of recent simulation studies which predict that SLAMS are the result of the steepening of a ULF wave as it passes through an energetic particle pressure gradient and present a simple picture illustrating the relationship between this spatial gradient and the observed temporal one.",

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AU - Schwartz, Steven J.

AU - Burgess, David

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N2 - We present observations of 1.4–20 keV ions in association with short large amplitude magnetic structures (SLAMS) using high time resolution AMPTE/UKS data near the quasi‐parallel Earth's bow shock. The observations show a strong temporal gradient in the suprathermal ion pressure as the convecting SLAMS passes. We discuss these observations in the context of recent simulation studies which predict that SLAMS are the result of the steepening of a ULF wave as it passes through an energetic particle pressure gradient and present a simple picture illustrating the relationship between this spatial gradient and the observed temporal one.

AB - We present observations of 1.4–20 keV ions in association with short large amplitude magnetic structures (SLAMS) using high time resolution AMPTE/UKS data near the quasi‐parallel Earth's bow shock. The observations show a strong temporal gradient in the suprathermal ion pressure as the convecting SLAMS passes. We discuss these observations in the context of recent simulation studies which predict that SLAMS are the result of the steepening of a ULF wave as it passes through an energetic particle pressure gradient and present a simple picture illustrating the relationship between this spatial gradient and the observed temporal one.

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Observations of suprathermal ions in association with SLAMS

Abstract

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