Coordinated observations using space and ground-based instruments were made of active region complex numbers 2522/2530, 24-30 June, 1980. The 10 largest flares from these regions were of importance M1-M6 in X-rays, and all were observed from satellites, except for one observed from a balloon. Several kinds of buildup signature have been found in the tens of minutes before these flares. Among these signatures are the following: (1) relative faintness in X-ray lines of the pre-flare pixels, (2) X-ray (5-15 keV) 'flashes' at points displaced by 1-2 arcmin from the flare site, (3) rising filaments seen in H-alpha and ultraviolet, (4) microwave intensification, polarization increase, and polarization flip, and (5) coronal disturbances above limb flares at or before the impulsive phase.
Flare buildup in X-rays, UV, microwaves and white light
1982-01-01
Sonstige
Keine Angabe
Englisch
Flare buildup in X-rays, UV, microwaves and white light
Elsevier | 1983
|Microwave Signatures of Solar Flare Buildup
British Library Conference Proceedings | 2000
|CHAPTER 5 -- FORECASTING AND NOWCASTING - Microwave Signatures of Solar Flare Buildup
Online Contents | 2000
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