Solar disturbances and correlated geospace responses: Relativistic magnetospheric electron acceleration

DN Baker*, T.I. Pulkkinen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

The role of high-speed solar wind streams in driving relativistic electron acceleration within the Earth's magnetosphere is discussed based on ISTP and related spacecraft observations. A "recirculation" mechanism for electron acceleration and redistribution has been invoked. Recently, an increase in the number of coronal mass ejections (CMEs) and related "magnetic clouds" has been seen at 1 AU. As these CME/cloud systems interact with the Earth's magnetosphere, they are able to produce rapid enhancements in the magnetospheric electron population. We compare and contrast the relativistic electron signatures observed by the POLAR, SAMPEX, and other spacecraft during recent magnetic cloud events, especially January 1997 and May 1997. In these cases, there were large solar wind and IMF changes during the cloud passages and very rapid energetic electron acceleration was observed. The relative geoeffectiveness of these events is examined and "space weather" predictability is assessed.

Original languageEnglish
Title of host publication31ST ESLAB SYMPOSIUM ON CORRELATED PHENOMENA AT THE SUN, IN THE HELIOSPHERE AND IN GEOSPACE
EditorsA Wilson
PublisherEuropean Space Agency
Pages199-206
Number of pages4
ISBN (Print)92-9092-660-0
Publication statusPublished - 1997
MoE publication typeA4 Article in a conference publication
EventESLAB Symposium on Correlated Phenomena at the Sun, in the Heliosphere and in Geospace - Noordwijk, Netherlands
Duration: 22 Sep 199725 Sep 1997
Conference number: 31

Publication series

NameESA SPECIAL PUBLICATIONS
PublisherEUROPEAN SPACE AGENCY
Volume415
ISSN (Print)0379-6566

Conference

ConferenceESLAB Symposium on Correlated Phenomena at the Sun, in the Heliosphere and in Geospace
CountryNetherlands
CityNoordwijk
Period22/09/199725/09/1997

Cite this