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Record 1 of 36701
Differential measurement and model calculations of cosmic ray latitudinal gradient with respect to the heliospheric current sheet
Author and Affiliation:
Christon, S. P.(California Inst. of Tech., Pasadena, CA, United States)
Cummings, A. C.(California Inst. of Tech., Pasadena, CA, United States)
Stone, E. C.(California Institute of Technology, Pasadena, United States)
Behannon, K. W.(California Inst. of Tech., Pasadena, CA, United States)
Burlaga, L. F.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
et al.
Abstract: Simultaneous magnetic field and charged particle measurements from the Voyager spacecraft with heliographic latitude separations of more than 10 deg are used to investigate the distribution of about 1-GeV galactic cosmic ray protons with respect to the heliospheric current sheet in the outer solar system. By comparing the ratio of cosmic ray flux at Voyager 1 to that at Voyager 2 during periods of relatively quiet interplanetary conditions when the spacecraft are either both north or both south of the heliospheric current sheet, an average latitude component of the gradient of the cosmic ray flux on opposite sides of the current sheet is derived under restricted interplanetary conditions of -0.22 + or - 0.03 pct/deg, equivalent to a decrease of about 1 percent/AU away from the current sheet at about 12 AU. The results for these limited periods are in qualitative agreement with propagation models incorporating particle drifts.
Publication Date: Mar 01, 1986
Document ID:
19860048590
(Acquired Nov 28, 1995)
Accession Number: 86A33328
Subject Category: SPACE RADIATION
Document Type: Journal Article
Publication Information: Journal of Geophysical Research; p. 2867-287; (ISSN 0148-0227); 91
Publisher Information: United States
Contract/Grant/Task Num: NSF ATM-220-18; NGR-05-002-160; NSG-7101
Financial Sponsor: NASA; United States
Organization Source: California Inst. of Tech.; Pasadena, CA, United States
NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 11p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: CURRENT SHEETS; GALACTIC COSMIC RAYS; HELIOSPHERE; INTERPLANETARY MAGNETIC FIELDS; PROTON FLUX DENSITY; SOLAR CYCLES; SUNSPOT CYCLE; VOYAGER 1 SPACECRAFT; VOYAGER 2 SPACECRAFT
Imprint And Other Notes: Journal of Geophysical Research (ISSN 0148-0227), vol. 91, March 1, 1986, p. 2867-2877.
Availability Source: Other Sources
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