(1) Observatoire de Paris, Section de Meudon, DASOP, F-92195 Meudon, France;(2) Centre d'Etude Spatiale des Rayonnements, BP 4346, F-31029 Toulouse, France;(3) Space Science Institute, Profsoyouznaya 84/32, 117810 Moscow, Russia
Abstract:
We report here on preliminary results of a systematic study of fast temporal fluctuations in impulsive and extended solar X-ray bursts observed by PHEBUS at energies around 100 keV. Subsecond timescales are quite common in the impulsive events and are not observed in extended ones.