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 language | English |
|---|---|
| Title of host publication | 31ST ESLAB SYMPOSIUM ON CORRELATED PHENOMENA AT THE SUN, IN THE HELIOSPHERE AND IN GEOSPACE |
| Editors | A Wilson |
| Publisher | European Space Agency |
| Pages | 199-206 |
| Number of pages | 4 |
| ISBN (Print) | 92-9092-660-0 |
| Publication status | Published - 1997 |
| MoE publication type | A4 Conference publication |
| Event | ESLAB Symposium on Correlated Phenomena at the Sun, in the Heliosphere and in Geospace - Noordwijk, Netherlands Duration: 22 Sept 1997 → 25 Sept 1997 Conference number: 31 |
Publication series
| Name | ESA SPECIAL PUBLICATIONS |
|---|---|
| Publisher | EUROPEAN SPACE AGENCY |
| Volume | 415 |
| ISSN (Print) | 0379-6566 |
Conference
| Conference | ESLAB Symposium on Correlated Phenomena at the Sun, in the Heliosphere and in Geospace |
|---|---|
| Country/Territory | Netherlands |
| City | Noordwijk |
| Period | 22/09/1997 → 25/09/1997 |