Can I read Extreme ultraviolet flashes of solar flares observed via sudden frequency deviations: Experimental results on EtoBox?
Extreme ultraviolet flashes of solar flares observed via sudden frequency deviations: Experimental results by Richard F. Donnelly is a Physics and Astronomy article available to read on EtoBox.
What is Extreme ultraviolet flashes of solar flares observed via sudden frequency deviations: Experimental results about?
Properties of solar-flare EUV flashes measured via a type of ionospheric event, called a sudden frequency deviation (SFD), are presented. SFD's are sensitive to bursts of radiation in the 1-1030 A wavelength range. Hen 303.8/~, Ov 629.7 A, H Ly 972.5/~ and Cn1977.0/~ have essentially the same impulsive time dependence as the 1-1030 A flash responsible for SFD's. Soft X-rays (2-20/~) and certain EUV lines have a much slower time dependence than the 1-1030 A flash. Most SFD's have some fine structure, but marked quasi-periodicity in EUV flashes is quite rare. EUV flashes are closely associated with hard X-ray bursts, white-light emission, microwave radio bursts and small bright impulsive kernels in the Ha flare. The intensity of EUV flashes depends on the central meridian distance of the Hc~ flare location; the intensity decreases at the limb. The total energy radiated in the 10-1030/~ flash for the largest events observed is about 10 al ergs.
Who reads Extreme ultraviolet flashes of solar flares observed via sudden frequency deviations: Experimental results?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Richard F. Donnelly
- Publisher
- Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC (ISSN 0038-0938)
- Published
- 1971
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)