title: The southern high-speed stream: results from the SWICS instrument on Ulysses.
abstract: The high-speed solar wind streaming from the southern coronal hole was remarkably uniform and steady and was confined by a sharp boundary that extended to the corona and chromosphere. Charge state measurements indicate that the electron temperature in this coronal hole reached a maximum of about 1.5 million kelvin within 3 solar radii of the sun. This result, combined with the observed lack of depletion of heavy elements, suggests that an additional source of momentum is required to accelerate the polar wind.
authors.affiliation: Physikalisches Institut, University of Bern, Switzerland.
authors.forename: J
authors.initials: J
authors.lastname: Geiss
authors.forename: G
authors.initials: G
authors.lastname: Gloeckler
authors.forename: R
authors.initials: R
authors.lastname: von Steiger
authors.forename: H
authors.initials: H
authors.lastname: Balsiger
authors.forename: L A
authors.initials: LA
authors.lastname: Fisk
authors.forename: A B
authors.initials: AB
authors.lastname: Galvin
authors.forename: F M
authors.initials: FM
authors.lastname: Ipavich
authors.forename: S
authors.initials: S
authors.lastname: Livi
authors.forename: J F
authors.initials: JF
authors.lastname: McKenzie
authors.forename: K W
authors.initials: KW
authors.lastname: Ogilvie
mesh_terms: D004602:Elements; D005118:Extraterrestrial Environment; D007477:Ions; D016082:Solar System; D018531:Spacecraft; D013057:Spectrum Analysis / Q000295:instrumentation
chemical_list: D004602:Elements; D007477:Ions