NDLI: The multifarious temporal variations of low energy, relativistic cosmic ray electrons

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The multifarious temporal variations of low energy, relativistic cosmic ray electrons

Content Provider	NASA Technical Reports Server (NTRS)
Author	Cline, T. L. Simnett, G. M. McDonald, F. B.
Copyright Year	1972
Description	A detailed examination is made of the intensity variations of 3 - 12 MeV interplanetary electrons. The data used are from the cosmic ray experiment flown on the IMP solar minimum through to the onset of the present solar maximum (i.e., from December 1963 through August 1969). A morphology for the intensity changes is tentatively proposed which includes solar flare-associated events, solar co-rotating increases, Forbush decreases, and quiet-time increases, as well as the long term eleven-year variation. It is contended that the electron component observed both during quiescent times and during quiet-time increases are galactic in origin. The quiet-time increases represent a completely new phenomenon that appears to be unique to the low energy electron population. During a quiet-time increase the electron intensity is enhanced by a factor of 3 to 5 over a period of days, and, in general, these periods anti-correlate with low-energy solar particle events. Qualitatively, their amplitude diminishes with increasing solar activity.
File Size	1303840
Page Count	53
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19720010214
Archival Resource Key	ark:/13960/t07x14x69
Language	English
Publisher Date	1972-01-01
Access Restriction	Open
Subject Keyword	Space Radiation Solar Flares Electron Flux Density Neutron Flux Density Relativistic Particles Periodic Variations Imp Graphs Charts Cosmic Rays Galactic Radiation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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