Solar modulation of cosmic electrons - Evidence for dynamic regulation

Abstract

view Abstract Citations (23) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Solar Modulation of Cosmic Electrons: Evidence for Dynamic Regulation Tuska, Evelyn ; Evenson, Paul ; Meyer, Peter Abstract An analysis of data on cosmic-ray electrons in the energy range 1-10 GeV returned by the University of Chicago instrument on the ISEE 3/ICE spacecraft during the time interval 1978-1989 has been completed. When combined with other results, these new data indicate that the solar modulation of these electrons is remarkably different from that of nuclei of similar rigidity. Most notably, the electrons reach a much higher flux level in 1987 than in 1977 in distinction to nuclei which typically attain similar flux levels at successive solar minima. No clear understanding of this behavior emerges from current models of the charge sign dependence of solar modulation. It is suggested that this apparent lack of symmetry may indicate a dynamical role of cosmic rays in the modulation process. Publication: The Astrophysical Journal Pub Date: May 1991 DOI: 10.1086/186043 Bibcode: 1991ApJ...373L..27T Keywords: Cosmic Rays; Electron Distribution; Solar Activity Effects; Solar Wind; Abundance; Modulation; Spaceborne Astronomy; Stellar Winds; Space Radiation; COSMIC RAYS: GENERAL; SUN: ACTIVITY; SUN: MAGNETIC FIELDS full text sources ADS |