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

Technical Report · Tue Jan 01 04:00:00 EST 1985

OSTI ID:7244884

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

The two major disturbances in the heliosphere during the present sunspot cycle, the event of June to August, 1982, and the event of April to June, 1978, are simulated by the method developed by Hakamada and Akasofu (1982). Specifically, an attempt was made to simulate the effects of six major flares from three active regions in June and July, 1982, and April and May, 1978. A comparison of the results with the solar wind observations at Pioneer 12 (approximately 0.8 au), ISEE-3 (approximately 1 au), Pioneer 11 (approximately 7 to 13 au) and Pioneer 10 (approximately 16 to 28 au) suggests that some major flares occurred behind the disk of the sun during the two periods. The 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: Alaska Univ., Fairbanks (USA)
• OSTI ID: 7244884
• Report Number(s): N-86-29756; NASA-CR-176943; NAS-1.26:176943
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DATA
DATA ACQUISITION
INFORMATION
NUMERICAL DATA
SHOCK WAVES
SIMULATION
SOLAR ACTIVITY
SOLAR FLARES
SOLAR WIND
THEORETICAL DATA