Cosmic rays 10Be biennal data and their relationship to aurorae and sunspots

Details Cosmic rays 10Be biennal data and their relationship to aurorae and sunspots Cosmic rays 10Be biennal data and their relationship to aurorae and sunspots

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....5..367a&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 5 p 367-370 (SEE N85-34991 23-93)

Physics

Auroras, Beryllium 10, Cosmic Rays, Galactic Radiation, Heliosphere, Magnetic Fields, Solar Activity, Solar Wind, Sunspots, Beryllium Isotopes, Flux Density, Interplanetary Space, Solar Activity Effects, Solar Cycles, Solar System, Time Series Analysis

Scientific paper

The galactic cosmic ray (C.R.) variations which should give information on three dimensional aspects of the heliospheric magnetic fields and on the solar wind, which modulate their influx into the Solar System were studied. In order to decode the information from the C.R. series it is necessary to know the mechanisms through which the modulation is produced. It it clear that a balance of effects with sources at different heliospheric latitudes results in the modulated C.R. intensity. It is found that the modulation of 10Be in polar ice may be due to at least two main contributions: (1) negative and in phase with the Solar flare activity modulating the cosmic ray flux in Forbush-type decreases, and (2) positive in phase with the appearance of large wind streams situated at both polar coronal holes. It is found that the high heliolatitude activity is related to a stable periodicity of 11.1y whereas the low heliolatitude activity contributes to the wondering of the solar cycles.

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