Il Nuovo Cimento C

, Volume 19, Issue 6, pp 935–943 | Cite as

Ulysses cosmic-ray investigations extending from the south to the north polar regions of the Sun and heliosphere

  • J. A. Simpson
Article

Summary

The recent rapid transit of Ulysses from the solar south polar to the north polar region has confirmed the earlier findings by the COsmic-ray and Solar-Particle Investigations (COSPIN) international consortium and has yielded additional discoveries that are important for understanding heliospheric modulation. High-resolution isotopic measurements of Fe and Ni on Ulysses show that the source composition of these cosmic-ray nuclei is not neutron rich for these elements and is close to solar-system composition.

PACS 96.40

Cosmic rays: Anomalous component 

PACS 96.50

Interplanetary space 

PACS 96.60

Solar physics 

PACS 01.30.Cc

Conference proceedings 

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Copyright information

© Società Italiana di Fisica 1996

Authors and Affiliations

  • J. A. Simpson
    • 1
  1. 1.The Enrico Fermi Institute and Department of PhysicsThe University of ChicagoChicagoUSA

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