Meter-decimeter and microwave radio observations of solar flares

1990 ◽  
Vol 73 ◽  
pp. 165 ◽  
Author(s):  
M. Pick ◽  
K.-L. Klein ◽  
G. Trottet
Keyword(s):  
Solar Flares ◽  
Radio Observations ◽  
Microwave Radio

scholarly journals Radio Observations of High Energy Solar Flares

2002 ◽  
Vol 12 ◽  
pp. 379-383
Author(s):  
Mukul R. Kundu
Keyword(s):  
Radio Emission ◽  
Spatial Structure ◽  
Solar Flares ◽  
High Energy ◽  
Radio Observations ◽  
Simultaneous Imaging ◽  
High Energy Electrons

AbstractIn this paper we discuss some recent observations of radio emission produced by high energy electrons resulting from solar flares. We discuss the spatial structure of simple weak spiky burst emissions observed simultaneously, at 17 and 34 GHz with the Nobeyama Radio Heliograph (NoRH). Using simultaneous imaging observations obtained by Yohkoh/HXT and SXT along with NoRH17 & 34 GHz observations, we attempt to model a relatively stronger and longer flare using gyrosynchrotron mechanism for the flaring radio emission.

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 Evidence for Polarized Solar Flare Emission From Simultaneous Radio Observations in Australia and Vietnam

2015 ◽  
Vol 25 (1) ◽  
pp. 75
Author(s):  
Nguyen Thi Thao ◽  
Nguyen Thi Phuong ◽  
Pierre Darriulat ◽  
Pham Ngoc Diep ◽  
Do Thi Hoai ◽  
...  
Keyword(s):  
Solar Flare ◽  
Radio Telescope ◽  
Solar Flares ◽  
Solar Observatory ◽  
Radio Observations

A sample of 34 solar flares recorded in Ha Noi using the VATLY radio telescope between April 2012 and January 2014 at frequencies of 1415 and 1417.6 MHz is compared with the corresponding observations made at 1415 MHz by the solar observatory of Learmonth (Australia). While good overall agreement is obtained, a few differences are noted and studied in some detail. In particular, the use of different feeds in Ha Noi and Learmonth reveals a case of very large polarization of the flare emission.

scholarly journals Analysis of some solar flares from optical, X-ray, and radio observations

1968 ◽  
Vol 35 ◽  
pp. 449-464
Author(s):  
R. Falciani ◽  
M. Landini ◽  
A. Righini ◽  
M. Rigutti
Keyword(s):  
Solar Flares ◽  
High Intensity ◽  
Radio Bursts ◽  
X Rays ◽  
Radio Observations ◽  
X Ray ◽  
Optical Flare

Using an improved isodensitometric technique it has been possible to study in great detail the photometric structure and the evolution of eight flares. A comparison has been made between the evolutive curves and the ones obtained from measurements of solar X-rays and radio fluxes at λλ 3·2 and 21 cm.A reduction of the flare areas (and of the emitted energies) before the flash phase and a continuous pulsation of the flare have been observed. Further it seems that the flares associated with radio bursts or X-ray events are those which show regions of a sufficiently high intensity, the emitting areas not being a very important parameter.The correlation in time between the various examined aspects of the AR seems to indicate that the sequence for the beginning of the different phenomena is, in general: optical flare, X-ray events, radio events.

scholarly journals Bursts of microwave radio emission associated with solar flares

1959 ◽  
Vol 9 ◽  
pp. 218-221 ◽  
Author(s):  
G. B. Gelfreich ◽  
V. N. Ikhsanova ◽  
N. L. Kaĭdanovskiĭ ◽  
N. S. Soboleva ◽  
G. M. Timofeeva ◽  
...  
Keyword(s):  
Radio Emission ◽  
Solar Flares ◽  
Solar Radio ◽  
Solar Radio Emission ◽  
Frequency Range ◽  
Microwave Radio

Bursts of solar radio emission which coincide in time with solar flares are occasionally observed over the whole frequency range up to 35,000 Mc/s. The purpose of this paper is to describe briefly some bursts observed at Pulkovo at wavelength λ = 3.2 cm.

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