Millisecond time variations in hard X-ray solar flares

Details Millisecond time variations in hard X-ray solar flares Millisecond time variations in hard X-ray solar flares

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...265l..99k&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 265, Feb. 15, 1983, p. L99-L104.

Astronomy and Astrophysics

Astronomy

125

Solar Flares, Solar X-Rays, Time Response, X Ray Astronomy, Constraints, Solar Corona, Solar Maximum Mission

Scientific paper

The results of a search for fast spikes in 2830 hard X-ray solar flares as observed with the hard X-ray burst spectrometer on the Solar Maximum Mission (SMM) are presented. Hundreds of fast spikes with durations of less than 1 sec have been detected at time resolutions of 128 msec and 10 msec. Fast spikes have been detected with rise and decay times as short as 20 msec and with widths as short as 45 msec. They are the fastest hard X-ray variations yet seen from the sun. The observations of such fast variations place new constraints on the physical nature of the source, and these observations and constraints are discussed in terms of nonthermal and thermal models of flares.

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