He abundance variations in the solar wind: Observations from Ulysses Metadata

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Title

  • Main Title He abundance variations in the solar wind: Observations from Ulysses

Creator

  • Author: Barraclough, Bruce L.
    Creator Type: Personal
  • Author: Gosling, John T.
    Creator Type: Personal
  • Author: Phillips, John L.
    Creator Type: Personal
  • Author: McComas, David J.
    Creator Type: Personal
  • Author: Feldman, William C.
    Creator Type: Personal
    Creator Info: Los Alamos National Lab., NM (United States)
  • Author: Goldstein, Bruce E.
    Creator Type: Personal
    Creator Info: California Inst. of Technology, Pasadena, CA (United States). Jet Propulsion Lab.

Contributor

  • Sponsor: United States. National Aeronautics and Space Administration.
    Contributor Type: Organization
    Contributor Info: National Aeronautics and Space Administration, Washington, DC (United States)

Publisher

  • Name: Los Alamos National Laboratory
    Place of Publication: New Mexico
    Additional Info: Los Alamos National Lab., NM (United States)

Date

  • Creation: 1995-09-01

Language

  • English

Description

  • Content Description: The Ulysses mission is providing the first opportunity to observe variations in solar wind plasma parameters at heliographic latitudes far removed from the ecliptic plane. We present an overview of the solar wind speed and the variability in helium abundance, [He] data on [He] in six high latitude coronal mass ejections (CMEs), and a superposed epoch analysis of [He] variations at the seven heliospheric current sheet (HCS) crossings made during the rapid-latitude-scan portion of the mission. The differences in the variability of the solar wind speed and [He] in high latitude and equatorial regions are quite striking. Solar wind speed is generally low but highly variable near the solar equator, while at higher latitudes the average speed is quite high with little variability. [He] can vary over nearly two decades at low solar latitudes, while at high latitudes it varies only slightly. In contrast to the high [He] that is commonly associated with CMEs observed in the ecliptic, none of the six high-speed CMEs encountered at high southern heliographic latitudes showed any significant variation in helium content. A superposed epoch analysis of the [He] during all seven HCS crossings made as Ulysses passed from the southern to northern solar hemisphere shows the expected [He] minimum near the crossing and a broad region of low [He] around the crossing time. We discuss how our solar wind [He] observations may provide an accurate measure of the helium composition for the entire convective zone of the Sun.
  • Physical Description: 15 p.

Subject

  • Keyword: Solar Wind
  • Keyword: Monitoring
  • Keyword: Variations
  • Keyword: Solar Atmosphere
  • STI Subject Categories: 66 Physics
  • Keyword: Convection
  • Keyword: Helium

Source

  • Conference: 8. international solar wind conference, Dana Point, CA (United States), 26-30 Jun 1995

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE96000023
  • Report No.: LA-UR--95-2969
  • Report No.: CONF-9506256--4
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 112936
  • Archival Resource Key: ark:/67531/metadc623385

Note

  • Display Note: OSTI as DE96000023
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