Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983stin...8335983k&link_type=abstract
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Astronomy and Astrophysics
Astronomy
Energy Spectra, Microwave Emission, Solar Radio Bursts, Solar X-Rays, X Ray Astronomy, Bremsstrahlung, Fine Structure, Magnetohydrodynamics, Microwave Interferometers, Pulse Rate
Scientific paper
An intense and fast spike-like solar burst was built up of short time scale structures superimposed on an underlying gradual emission, the time evolution of which shows remarkable proportionality between hard X-ray and microwave fluxes. The finer time structure were best defined at mm-microwaves. At the peak of the event, the finer structures repeat every 30x60ms. The more slowly varying component with a time scale of about 1 second was identified in microwave hard X-rays throughout the burst duration. It is suggested that X-ray fluxes might also be proportional to the repetition rate of basic units of energy injection (quasi-quantized). The relevant parameters of one primary energy release site are estimated both in the case where hard X-rays are produced primarily by thick-target bremsstrahlung, and when they are purely thermal. The relation of this figure to global energy considerations is discussed.
Brown John C.
Correia Emilia
Costa Joaquim E. Rezende
Dennis Brian R.
Hurford G. H.
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