Interplanetary radio storms. I - Extension of solar active regions through the interplanetary medium

Details Interplanetary radio storms. I - Extension of solar active regions through the interplanetary medium Interplanetary radio storms. I - Extension of solar active regions through the interplanetary medium

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...136..255b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 136, no. 2, July 1984, p. 255-262.

Astronomy and Astrophysics

Astrophysics

25

Interplanetary Medium, Solar Radio Emission, Type 3 Bursts, Cross Correlation, Solar Activity, Solar Diameter, Sunspots

Scientific paper

About 100 storms of type III solar radio bursts have been identified in the ISEE-3 radio experiment data during the 4 yr period around the maximum of the 21st solar cycle. They demonstrate the very frequent presence of streams of suprathermal electrons. Their durations range from 1 to 10 d or more. They are observed up to 100 - 170 solar radii. Their rate of occurrence is 2 to 3 per solar rotation near solar maximum. It is shown that the time variations of the daily radio emission intensities correlate with the sunspot number variations and with the solar activity in general. More specifically, the authors find a very good correlation with the meter wave type III and type I storms, which demonstrates that the suprathermal electrons responsible for the radio emission have been accelerated below 2 solar radii heliocentric. The different lags observed between the sunspot number variations, the S-component, the type I and type II storms are discussed.

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