scholarly journals An Investigation of the Speed of the Solar Disturbances Responsible for Type III Radio Bursts

1959 ◽  
Vol 12 (4) ◽  
pp. 369 ◽  
Author(s):  
JP Wild ◽  
KV Sheridan ◽  
AA Neylan
Keyword(s):  
Spectral Type ◽  
Solar Radio ◽  
Radio Bursts ◽  
Solar Radio Bursts ◽  
Plasma Oscillations ◽  
Type Iii ◽  
Solar Disturbances ◽  
Different Levels

The paper describes an investigation aimed at finding out whether solar radio bursts of spectral type III are due to disturbances which travel out through the corona with velocities exceeding O�lc, as predicted by the well-known hypothesis that the emissions are due to plasma oscillations. If the proposition is correct, emissions at different frequencies would be generated at different levels in the corona-the lower the frequency the higher the source. This property is tested by simultaneous directional observations at a number of frequencies between 40 and 70 Mc/s, using a swept-frequency interferometer.

scholarly journals The Association of Solar Radio Bursts of Spectral Type III with Chromospheric Flares

1957 ◽  
Vol 10 (4) ◽  
pp. 483 ◽  
Author(s):  
RE Loughhead ◽  
JA Roberts ◽  
Marie K McCabe
Keyword(s):  
Spectral Type ◽  
Solar Flares ◽  
Solar Radio ◽  
Radio Bursts ◽  
Radio Observations ◽  
Solar Radio Bursts ◽  
Type Iii ◽  
Class 1 ◽  
Relationship Of ◽  
The Relationship

The relationship of radio bursts of spectral type III to solar flares is investigated by comparing simultaneous optical and radio observations. Over 300 flares are examined, 85 per cent. of which are microflares (class 1?). About 20 per cent. of the flares are associated with type III events, while more than 60 per cent. of the bursts recorded occur during the lifetime of a flare. These bursts tend to occur near the beginning of the flare or even to precede it slightly.

scholarly journals Plasma Oscillations and the Emissivity of Type III Radio Bursts

1980 ◽  
Vol 86 ◽  
pp. 369-379 ◽  
Author(s):  
D. A. Gurnett ◽  
R. R. Anderson ◽  
R. L. Tokar
Keyword(s):  
Solar Radio ◽  
Plasma Oscillation ◽  
Field Measurements ◽  
Radio Bursts ◽  
Solar Radio Bursts ◽  
Plasma Oscillations ◽  
Principal Characteristics ◽  
Type Iii ◽  
Electric Field Measurements ◽  
Intense Electron

Plasma wave electric field measurements with the solar orbiting Helios spacecraft have shown that intense electron plasma oscillations occur in association with type III solar radio bursts, thereby confirming a well known mechanism for generating solar radio emissions first proposed by Ginzburg and Zheleznyakov in 1958. In this paper we review the principal characteristics of these plasma oscillations and compare the observed plasma oscillation intensities with recent measurements of the emissivity of type III radio bursts. The observed emissivities are shown to be in good agreement with two current models for the conversion of electrostatic plasma oscillations to electromagnetic radiation.

scholarly journals On the Propagation of the Electrons Related to Type III Bursts

1980 ◽  
Vol 86 ◽  
pp. 327-327 ◽  
Author(s):  
G.V. de Genouillac ◽  
D.F. Escande
Keyword(s):  
Solar Corona ◽  
Electromagnetic Waves ◽  
Solar Radio ◽  
Interplanetary Medium ◽  
Electron Plasma ◽  
Radio Bursts ◽  
Solar Radio Bursts ◽  
Plasma Oscillations ◽  
Type Iii ◽  
Electron Clouds

Type III solar radio bursts are known to be excited by solar electron clouds travelling outwards through the solar corona and interplanetary medium. According to the “plasma hypothesis”, electron plasma oscillations are created by the passing beam, which are in turn converted into electromagnetic waves.

Electron Exciter Speeds Associated with Interplanetary Type III Solar Radio Bursts

Solar Physics ◽  
2015 ◽  
Vol 290 (10) ◽  
pp. 2975-3004 ◽  
Author(s):  
M. J. Reiner ◽  
R. J. MacDowall
Keyword(s):  
Solar Radio ◽  
Radio Bursts ◽  
Solar Radio Bursts ◽  
Type Iii

A Theory of Type III Solar Radio Bursts

1974 ◽  
pp. 283-283
Author(s):  
V. V. Zaitsev ◽  
N. A. Mityakov ◽  
V. O. Rapoport
Keyword(s):  
Solar Radio ◽  
Radio Bursts ◽  
Solar Radio Bursts ◽  
Type Iii

scholarly journals The Polarization Structure of Type III Solar Radio Bursts

1965 ◽  
Vol 18 (3) ◽  
pp. 283 ◽  
Author(s):  
UV Gopala Rao
Keyword(s):  
Solar Radio ◽  
Great Majority ◽  
Radio Bursts ◽  
Solar Radio Bursts ◽  
Polarization Structure ◽  
Type Iii ◽  
Double Structure ◽  
Strong Polarization ◽  
Diffuse Background

The polarization of type III bursts was measured, using a swept.phase technique, at 40 and 60 Mc/s. The great majority of type III bursts show slight to moderate polarization. The results indicate a double structure for the type III burst-a sharp, intense, drifting feature with relatively strong polarization, and a diffuse background of longer duration with relatively weak or zero polarization.

scholarly journals Recent Results of Meter-decameter Wave Observations of Solar Flares

1989 ◽  
Vol 104 (2) ◽  
pp. 185-189
Author(s):  
N. Copalswamy ◽  
M. R. Kundu
Keyword(s):  
Solar Flares ◽  
Solar Radio ◽  
Radio Bursts ◽  
Type Ii ◽  
Solar Radio Bursts ◽  
Type Iii ◽  
Type Iv

AbstractWe present recent results from meter-decameter imaging of several classes of solar radio bursts: Preflare activity in the form of type III bursts, correlated type IIIs from distant sources, and type II and moving type IV bursts associated with flares and CMEs.

Sign in / Sign up

Export Citation Format

Share Document