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| Titel |
Developments in the use of EISCAT for interplanetary scintillation |
| VerfasserIn |
R. A. Fallows, A. R. Breen, G. D. Dorrian |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 26, no. 8 ; Nr. 26, no. 8 (2008-08-05), S.2229-2236 |
| Datensatznummer |
250016181
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| Publikation (Nr.) |
 copernicus.org/angeo-26-2229-2008.pdf |
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| Zusammenfassung |
| The antennas of EISCAT have been used for interplanetary scintillation
(IPS) studies of the solar wind for many years. The main science
found from these studies is obtained through the cross-correlation of
signals from antennas having the longest baseline, providing more
accurate information on the different solar wind streams which may be
present in the line of sight. The development of dual-frequency IPS
observations between the 1.4 GHz receivers at the remote sites and
Tromsø, has allowed the use of the EISCAT Svalbard Radar for IPS,
increasing the available baselines to the extent that three solar wind
streams can sometimes be identified in the cross-correlation
functions. A weak-scattering model incorporating three possible solar
wind streams and dual observing frequencies is discussed and some
results presented. A recent study found that the current sampling
bandwidth limits the sensitivity of IPS observations at EISCAT.
Methods of increasing the sensitivity, and the results of trials, are
discussed. |
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