Solar Physics

, Volume 151, Issue 2, pp 389–392 | Cite as

Electron precipitation and mass motion in the 1991 June 9 white-light flare

  • J. -F. De La Beaujardière
  • R. C. Canfield
  • T. R. Metcalf
  • E. Hiei
  • T. Sakurai
  • K. Ichimoto
Solar Physics Letters

Abstract

We use Hα 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.

Keywords

Precipitation Flare Line Profile Mass Motion Energy Transport 

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • J. -F. De La Beaujardière
    • 1
  • R. C. Canfield
    • 1
  • T. R. Metcalf
    • 1
  • E. Hiei
    • 2
  • T. Sakurai
    • 2
  • K. Ichimoto
    • 2
  1. 1.Institute for AstronomyUniversity of HawaiiHonoluluUSA
  2. 2.National Astronomical ObservatoryTokyoJapan

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