Hostname: page-component-8448b6f56d-42gr6 Total loading time: 0 Render date: 2024-04-16T17:06:40.937Z Has data issue: false hasContentIssue false
  • English
  • Français

Estimation of Shock Thickness from Dynamic Spectra of Type II Bursts

Published online by Cambridge University Press:  14 August 2015

H. S. Sawant ,
S. S. Degaonkar ,
S. K. Alurkar  and
R. V. Bhonsle
H. S. Sawant
Affiliation:
Physical Research Laboratory Ahmedabad-380 009, India
S. S. Degaonkar
Affiliation:
Physical Research Laboratory Ahmedabad-380 009, India
S. K. Alurkar
Affiliation:
Physical Research Laboratory Ahmedabad-380 009, India
R. V. Bhonsle
Affiliation:
Physical Research Laboratory Ahmedabad-380 009, India

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Twenty type II solar radio bursts were observed during the period 1968 to 1972 by a solar radio spectroscope (240-40 MHz) at Ahmadebad. Intensity variations in type II bursts as a function of frequency and time are sometimes observed in their dynamic spectra. This fine structure enables determination of the shock thickness of the order of a few hundred to a few thousand kilometers. In a few cases, an interaction between streams of fast electrons and propagating shocks is clearly evidenced by simultaneous observations of short duration narrow band structures in type III bursts and type II bursts.

Type
Part III. Solar Transient Phenomena Affecting the Corona and Interplanetary Medium: Dynamics Deduced from Observations
Information
Symposium - International Astronomical Union , Volume 91: Solar and Interplanetary Dynamics , 1980 , pp. 257 - 259
Copyright
Copyright © Reidel 1980 

References

Kundu, M. R.: 1965, Solar Radio Astronomy , Interscience Publ., N.Y. Google Scholar
McLean, D. J.: 1974, IAU Symp. No. 57 , Newkirk, G. Jr. (Ed.) D. Reidel Co., pp. 301–327.Google Scholar
Wild, J. P., and Smerd, S. F.: 1972, Ann. Rev. Astron. Astrophys. , 10, pp. 159–196.CrossRefGoogle Scholar
Dryer, M.: 1975, Space Sci. Rev. , 17, pp. 277–325.Google Scholar
Lacombe, C., and Moller-Pedersen, B.: 1971, Astron. & Astrophys. , 15, pp. 404–418.Google Scholar