Solar wind electron suprathermal strength and temperature gradients: Ulysses observations
نویسندگان
چکیده
منابع مشابه
Oxygen flux in the solar wind: Ulysses observations
[1] We use the complete set of Ulysses solar wind data to conduct a comprehensive determination of the oxygen flux in relation to the proton flux in the solar wind during a wide range of solar activity levels. The data cover the heliosphere between 1.3 and 5.4 AU and, due to the unique orbit of Ulysses, all of the heliographic latitudes within ±80°. We find log‐normal distributions for O and H ...
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Halo electron velocity distributions have been surveyed during the first full Ulysses southern polar pass from January 1994 through April 1995. The data examined range from approximately 50◦ S heliolatitude to the maximum poleward extent of the Ulysses orbit, approximately 80◦ S, and then back through the solar equator to 35◦ N heliolatitude. During this traversal the radial distance of Ulysses...
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Some tangential discontinuities (TDs) observed by theUlysses spacecraft interface solar wind regions that differ only in their bulk velocity and magnetic field orientation; composition, density, temperature and magnetic field intensity are essentially the same in both regions. The relation between the plasma velocity jump across the TD and the magnetic field is investigated through the analysis...
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We perform the first statistical study of the effects of the interaction of suprathermal electrons with narrow-band whistler mode waves in the solar wind (SW). We show that this interaction does occur and that it is associated with enhanced widths of the so-called strahl component. The latter is directed along the interplanetary magnetic field away from the Sun. We do the study by comparing the...
متن کاملUlysses observations of pressure - balance structures in the polar solar wind
Throughout its high-latitude excursion Ulysses has observed several types of solar wind structures. In addition to structures such as Alfven waves, compressional features, and microstreams, the solar wind also contains low contrast pressure-balance structures (PBSs). The PBSs are marked by an anti-correlation of the plasma and field pressures; their signatures are often hidden by the comparativ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2000
ISSN: 0148-0227
DOI: 10.1029/2000ja900039