Electron precipitation and mass motion in the 1991 June 9 white-light flare |
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| Authors: | J -F De La Beaujardière R C Canfield T R Metcalf E Hiei T Sakurai K Ichimoto |
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| Institution: | (1) Institute for Astronomy, University of Hawaii, 96822 Honolulu, HI, USA;(2) National Astronomical Observatory, Osawa, Mitaka, 181 Tokyo, Japan;(3) Present address: Observatoire de Paris, DASOP, URA326, 92195 Meudon, France |
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| Abstract: | We use H line profiles as a diagnostic of mass motion and nonthermal electron precipitation in the white-light flare (WLF) of 1991 June 9 01:34 UT. We find only weak downflow velocities ( 10 km s–1) at the site of white-light emission, and comparable velocities elsewhere.We also find that electron precipitation is strongest at the WLF site. We conclude that continuum emission in this flare was probably caused by nonthermal electrons and not by dynamical energy transport via a chromospheric condensation. |
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