Solar disturbances and correlated geospace responses: Relativistic magnetospheric electron acceleration

DN Baker*, T.I. Pulkkinen

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

Abstrakti

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.

AlkuperäiskieliEnglanti
Otsikko31ST ESLAB SYMPOSIUM ON CORRELATED PHENOMENA AT THE SUN, IN THE HELIOSPHERE AND IN GEOSPACE
ToimittajatA Wilson
KustantajaEuropean Space Agency
Sivut199-206
Sivumäärä4
ISBN (painettu)92-9092-660-0
TilaJulkaistu - 1997
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaESLAB Symposium on Correlated Phenomena at the Sun, in the Heliosphere and in Geospace - Noordwijk, Alankomaat
Kesto: 22 syyskuuta 199725 syyskuuta 1997
Konferenssinumero: 31

Julkaisusarja

NimiESA SPECIAL PUBLICATIONS
KustantajaEUROPEAN SPACE AGENCY
Vuosikerta415
ISSN (painettu)0379-6566

Conference

ConferenceESLAB Symposium on Correlated Phenomena at the Sun, in the Heliosphere and in Geospace
Maa/AlueAlankomaat
KaupunkiNoordwijk
Ajanjakso22/09/199725/09/1997

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