Evidence for ion energy dispersion in the polar cusp related to a northward-directed IMF

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Evidence for ion energy dispersion in the polar cusp related to a northward-directed IMF

Bosqued, J.M. / Sauvaud, J.A. / Rème, H. / Crasnier, J. / Galperin, Yu.I. / Kovrazhkin, R.A. / Gladyshev, V.A.

Abstract Data from the particle experiment aboard the AUREOL-3 polar satellite show that about 30% of the summer cusp crossings are characterised by a clear latitudinal energy dispersion of the solar wind ions. This energy-latitude correlation is observed at very high latitudes, 80° – 85°, near the polar boundary of the cusp, as an increase of the ion average energy with latitude. These structures have a typical latitude extent of 1° – 2° at ionospheric heights and correspond to a northward-directed IMF. These observations are consistent with a sunward convection of the foot of the magnetic flux tubes recently merged with a northward directed interplanetary magnetic field.

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Dokumentinformationen

Titel :

Evidence for ion energy dispersion in the polar cusp related to a northward-directed IMF

Beteiligte:

Bosqued, J.M. (Autor:in) / Sauvaud, J.A. (Autor:in) / Rème, H. (Autor:in) / Crasnier, J. (Autor:in) / Galperin, Yu.I. (Autor:in) / Kovrazhkin, R.A. (Autor:in) / Gladyshev, V.A. (Autor:in)

Erschienen in:

Advances in Space Research ; 5 , 4 ; 149-153

Erscheinungsdatum :

1985-01-01

Format / Umfang :

5 pages

ISSN :

0273-1177

DOI :

https://doi.org/10.1016/0273-1177(85)90130-9

Medientyp :

Aufsatz (Zeitschrift)