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 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.

scholarly journals Space Weather Study through Analysis of Solar Radio Bursts detected by a Single Station CALLSTO Spectrometer

2021 ◽  
Author(s):  
Theogene Ndacyayisenga ◽  
Ange Cynthia Umuhire ◽  
Jean Uwamahoro ◽  
Christian Monstein
Keyword(s):  
Space Weather ◽  
Solar Flares ◽  
Solar Radio ◽  
Low Cost ◽  
Radio Bursts ◽  
Solar Dynamics Observatory ◽  
Solar Radio Bursts ◽  
Type Iii ◽  
Type Iv ◽  
Single Station

Abstract. This article summarizes the results of an analysis of solar radio bursts detected by the e-Compound Astronomical Low cost Low-frequency Instrument for spectroscopy and Transportable Observatory (e-CALLISTO) spectrometer hosted by the University of Rwanda, College of Education. The data analysed were detected during the first year (2014–2015) of the instrument operation. The Atmospheric Imaging Assembly (AIA) images on board the Solar Dynamics Observatory (SDO) were used to check the location of propagating waves associated with type III radio bursts detected without solar flares. Using quick plots provided by the e-CALLISTO website, we found a total of 202 solar radio bursts detected by the CALLISTO station located in Rwanda. Among them, 5 are type IIs, 175 are type IIIs, and 22 type IVs radio bursts. It is found that all analysed type IIs and ∼37 % of type III bursts are associated with impulsive solar flares while Type IV radio bursts are poorly associated with flares. Furthermore, all of the analysed type II bursts are associated with CMEs which is consistent with the previous studies, and ∼44 % of type IIIs show association with CMEs. On the other hand it is observed that the majority of type IV radio bursts are believed to be originated from CME-driven shocks. Findings from this study confirms that solar radio bursts (SRBs) from ground observation and analysis constitute a clue to diagnose the space weather phenomena such as solar flare and CMEs and to some extent, they may serve as the advance warning of the related severe space weather hazards.

scholarly journals A study on the relationship of type III radio bursts CME and solar flares during the active period October-November 2003

2008 ◽  
Vol 4 (S257) ◽  
pp. 361-363
Author(s):  
Michaella Thanassa ◽  
Eleftheria Mitsakou ◽  
Panagiota Preka-Papadema ◽  
Xenophon Moussas ◽  
Panagiotis Tsitsipis ◽  
...  
Keyword(s):  
Solar Flares ◽  
Relativistic Electrons ◽  
Active Period ◽  
Radio Bursts ◽  
Characteristic Type ◽  
Type Iii ◽  
Intense Activity ◽  
Relationship Of ◽  
The Relationship

AbstractWithin a period of intense activity (20 October to 5 November 2003), the injection and propagation of near relativistic electrons, resulted in hundreds of type III bursts recorded by the ARTEMISIV radio spectrograph (20–650 MHz). For a number of these type III events association with GOES SXR/Hα flare and/or SOHO/LASCO CME was established. We study the variation of characteristic type III parameters and their relationship with features of the associated flares and/or CMEs.

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.

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

Correlations of solar-flare electron events with radio and X-ray emission from the sun

1968 ◽  
Vol 46 (10) ◽  
pp. S757-S760 ◽  
Author(s):  
R. P. Lin
Keyword(s):  
Solar Flare ◽  
Solar Radio ◽  
Interplanetary Space ◽  
The Sun ◽  
Radio Bursts ◽  
Radio Observations ◽  
X Ray ◽  
Type Iii ◽  
Electron Event ◽  
Burst Emission

The > 40-keV solar-flare electrons observed by the IMP III and Mariner IV satellites are shown to be closely correlated with solar radio and X-ray burst emission. In particular, intense type III radio bursts are observed to accompany solar electron-event flares. The energies of the electrons, the total number of electrons, and the size of the electron source at the sun can be inferred from radio observations. The characteristics of the electrons observed in interplanetary space are consistent with these radio observations. Therefore these electrons are identified as the exciting agents of the type III emission. It has been noted that the radio and X-ray bursts are part of the flash phase of flares. The observations indicate that a striking feature of the flash phase is the production of electrons of 10–100 keV energies.

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
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