Simulation study of two major events in the heliosphere during the present sunspot cycle

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA090iA09p08193· OSTI ID:6238827

Akasofu, S; Fry, C; Fillius, W; Sun, W; Dryer, M

The two major disturbances in the heliosphere during the present sunspot cycle, the event of June-August 1982 and the event of April-June 1978, are simulated by the method developed by Hakamada and Akasofu (1982). Specifically, we attempt to simulate effect of six major flares from three active regions in June-July 1982 and April-May 1978, respectively. A comparison of the results with the solar wind observations at Pioneer 12 (approx.0.8 AU), ISEE 3 (approx.1 AU), Pioneer 11 (approx.7-13 AU), and Pioneer 10 (approx.16-28 AU) suggests that some major flares occurred behind the disk of the sun during the two periods. Our method provides qualitatively some information as to how such a series of intense solar flares can greatly disturb both the inner and outer heliospheres. A long lasting effect on cosmic rays is discussed in conjunction with the disturbed heliosphere.

• Research Organization: Geophysical Institute and Department of Space Physics and Atmospheric Sciences, University of Alaska, Fairbanks, Alaska
• OSTI ID: 6238827
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 90:A9; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIATION
DISTURBANCES
IONIZING RADIATIONS
PIONEER SPACE PROBES
RADIATIONS
SIMULATION
SOLAR ACTIVITY
SOLAR CYCLE
SOLAR FLARES
SOLAR WIND
SPACE VEHICLES
STARSPOTS
STELLAR ACTIVITY
SUNSPOTS
VEHICLES