Cosmic ray and solar particle investigations over the South polar regions of the sun. Journal Article uri icon



  • Observations of galactic cosmic radiation and anomalous component nuclei with charged particle sensors on the Ulysses spacecraft showed that heliospheric magnetic field structure over the south solar pole does not permit substantially more direct access to the local interstellar cosmic ray spectrum than is possible in the equatorial zone. Fluxes of galactic cosmic rays and the anomalous component increased as a result of latitude gradients by less than 50% from the equator to -80 degrees . Thus, the modulated cosmic ray nucleon, electron, and anomalous component fluxes are nearly spherically symmetric in the inner solar system. The cosmic rays and the anomalous nuclear component underwent a continuous, -26 day recurrent modulation to -80.2 degrees , whereas all recurring magnetic field compressions and recurring streams in the solar wind disappeared above approximately 55 degrees S latitude.

publication date

  • May 1, 1995

has restriction

  • closed

Date in CU Experts

  • March 13, 2015 12:08 PM

Full Author List

  • Simpson JA; Connell JJ; Lopate C; McKibben RB; Zhang M; Anglin JD; Ferrando P; Rastoin C; Raviart A; Heber B

author count

  • 20

citation count

  • 0

Other Profiles

International Standard Serial Number (ISSN)

  • 0036-8075

Electronic International Standard Serial Number (EISSN)

  • 1095-9203

Additional Document Info

start page

  • 1019

end page

  • 1023


  • 268


  • 5213