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Rees & Forsyth 2003
Rees, A. and Forsyth, R.J. (2003). Magnetic clouds with east/west orientated axes observed by Ulysses during solar cycle 23. Geophysical Research Letters 30: doi: 10.1029/2003GL017296. issn: 0094-8276.

The second Ulysses orbit of the Sun has provided a unique opportunity for the study of the interplanetary manifestation of coronal mass ejections (ICMEs) over a wide range of heliographic latitudes. The Ulysses dataset between July 1995 and mid April 2003 has been surveyed for magnetic clouds (MCs), a subset of ICMEs. As a result of the rising solar activity during this time, ICMEs were observed over a wide range of heliographic latitudes. By fitting a constant α, force-free flux rope model to each event we determine whether the local axis orientation of the MCs are directed in an eastward or a westward sense. We show that during this period in solar cycle 23, those MCs whose hemispheric origin is clear display a trend, with MCs in the southern hemisphere having predominantly westward directed local axes and those in the northern hemisphere having eastward directed local axes.

BACKGROUND DATA FILES

Abstract

Keywords
Interplanetary Physics, Interplanetary magnetic fields, Interplanetary Physics, Solar cycle variations, Interplanetary Physics, Solar wind plasma, Interplanetary Physics, Sources of the solar wind
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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