On the Temporal Relationship between Hα Filament Eruptions and Soft X-Ray Emissions

Details On the Temporal Relationship between Hα Filament Eruptions and Soft X-Ray Emissions On the Temporal Relationship between Hα Filament Eruptions and Soft X-Ray Emissions

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apj...610l.133s&link_type=abstract

The Astrophysical Journal, Volume 610, Issue 2, pp. L133-L136.

Astronomy and Astrophysics

Astronomy

27

Methods: Statistical, Stars: Flare, Sun: Chromosphere, Sun: Coronal Mass Ejections (Cmes), Sun: Filaments, Techniques: Image Processing

Scientific paper

A technique for investigating the temporal relationship between Hα filament eruptions and soft X-ray flux is presented. The method is fast, simple, based on statistical measures, and requires no a priori knowledge regarding the location of the filaments on the solar disk. The method is used to study the filament eruption associated with a coronal mass ejection and the M-class flare that originated from NOAA Active Region 9163 on 2000 September 12. The technique provides a quantitative determination of the temporal relationship between changes in the Hα filament and soft X-ray flux. We conclude that the filament eruption begins 2 hr prior to the first detectable enhancement in soft X-ray flux.

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