Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icrc....3..255h&link_type=abstract
In: International Cosmic Ray Conference, 16th, Kyoto, Japan, August 6-18, 1979, Conference Papers. Volume 3. (A81-12386 02-93) T
Astronomy and Astrophysics
Astronomy
Cosmic Rays, Energy Spectra, Oxygen, Solar Activity Effects, Spaceborne Astronomy, Time Dependence, Abnormalities, Abundance, Imp, Particle Intensity
Scientific paper
The temporal changes in the differential intensity and energy spectra of anomalous oxygen, and in the O/C ratios of the anomalous cosmic ray component during the 1974-79 time period were examined using data from the IMP-8 and ISEE-3 spacecrafts. In addition to the solar modulation of the intensity of anomalous oxygen, the strength of the source of this component varies, and in 1978 the anomalous component disappeared almost completely. The results disagree with the existence of a purely galactic source but are consistent with expectations based on an heliospheric origin hypothesis as formulated by Fisk et al., (1974).
Fan Chang-Yun
Fisk Len A.
Gloeckler George
Hovestadt Dieter
Ipavich Fred M.
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