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Solar Radio Observations of the Proton Event of 1971 January 24

Published online by Cambridge University Press:  25 April 2016

I. D. Palmer ,
S. F. Smerd  and
A. C. Riddle
I. D. Palmer
Affiliation:
Division of Radiophysics, CSIRO, Sydney
S. F. Smerd
Affiliation:
Division of Radiophysics, CSIRO, Sydney
A. C. Riddle
Affiliation:
Division of Radiophysics, CSIRO, Sydney
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Extract

On 1971 January 24 a 3B flare at 18° N., 49° W. was associated with the acceleration of protons to relativistic energies; it was one of the rare events recorded by ground-level neutron monitors. Excellent radio coverage was obtained with single-frequency radiometers in the range 1000-9400 MHz, and at Culgoora with the 8-8000 MHz spectrograph and the 80 MHz radioheliograph. At the Earth relativistic protons and electrons arrived very promptly from the flare, whose site was near the foot of the nominal interplanetary field line which connects to the Earth.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 2 , Issue 2 , March 1972 , pp. 103 - 105
Copyright
Copyright © Astronomical Society of Australia 1972

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References

1 Riddle, A. C. and Sheridan, K. V., Proc. ASA, 2, 62 (1971).Google Scholar
2 Geophysical, Solar Data, U.S. Dept. Commerce, 319, Part 1 (March 1971).Google Scholar
3 Webber, W. R., ‘The Physics of Solar Flares’, NASA SP-50, 215 (1964).Google Scholar
4 Simnett, G. M., private communication.Google Scholar
5 Lin, R. P., private communication.Google Scholar
6 Cline, T. L. and McDonald, F. B., Sol. Phys., 5, 507 (1968).Google Scholar
7 Hansen, R. T., Garcia, C. J., Grognard, R. J.-M. and Sheridan, K. V. Proc. ASA, 2, 57 (1971).Google Scholar