Hard x-ray Pulsations in the Initial Phase of Flares

Details Hard x-ray Pulsations in the Initial Phase of Flares Hard x-ray Pulsations in the Initial Phase of Flares

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003soph..218..183f&link_type=abstract

Solar Physics, v. 218, Issue 1, p. 183-195 (2003).

Physics

6

Scientific paper

When analyzing light curves of hard X-ray bursts recorded by the Hard X-Ray Spectrometer on board the MTI satellite, we have found three events (all associated with major solar flares, two of them in the same active region) which show pulsations in the very initial phase of the burst. Periods of the pulsations range from 25 to 48 s. We compare them with other observations of pulsations of radio waves and in X-rays and conclude that pulsations of this kind have not been observed before. We mention several possible causes and prefer interactions between current-carrying loops as the most likely interpretation of the observed variations.

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