Physics
Scientific paper
Aug 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.8487c&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Aug. 1, 1987, p. 8487-8501.
Physics
22
Cosmic Rays, Heliosphere, Modulation, Solar Activity Effects, Solar Flares, Forbush Decreases, H Alpha Line, Pioneer 10 Space Probe, Pioneer 11 Space Probe, Solar X-Rays, Stellar Mass Ejection
Scientific paper
A plausible candidate flare is identified for each of the four major Forbush-like decrease events that were observed in the outer heliosphere in mid-1982. The associations are as follows: (1) FD 1 at P10 - backside flare at W152 deg on June 3; (2) FD 1 at P11 - 2B flare at E25 deg on June 6; (3) FD2 at P11 - 3B flare at E36 deg on July 12; and (4) FD 2 at P10 - 1N limb flare at W100 deg on July 22. In each case, the identified flare was 35 deg or less in ecliptic longitude from the affected satellite. There is no compelling evidence from near-sun spacecraft observations that the shocks from any of the four identified flares encompassed both P10 and P11. A significant fraction of the major near-sun interplanetary disturbances during June and July of 1982 arose in the relatively narrow range of Carrington longitude from 275-320 deg.
Cliver Edward W.
Howard Russ A.
Koomen Martin J.
Mihalov John D.
Sheeley Neil R. Jr.
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