Early Hinode Observations of a Solar Filament Eruption

Details Early Hinode Observations of a Solar Filament Eruption Early Hinode Observations of a Solar Filament Eruption

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..397..115s&link_type=abstract

First Results From Hinode ASP Conference Series, Vol. 397, Proceedings of the conference held 20-24 August, 2007, at Trinity Col

Astronomy and Astrophysics

Astronomy

Scientific paper

We use Hinode X-Ray Telescope (XRT) and Solar Optical Telescope (SOT) filtergraph (FG) Stokes-V magnetogram observations to study the early onset of a solar eruption that includes an erupting filament that we observe in TRACE EUV images; this is one of the first filament eruptions seen with Hinode. The filament undergoes a slow rise for at least 30 min prior to its fast eruption and strong soft X-ray flaring, and the new Hinode data elucidate the physical processes occurring during the slow-rise period. During the slow-rise phase, a soft X-ray (SXR) sigmoid forms from apparent reconnection low in the sheared core field traced by the filament, and there is a low-level intensity peak in both EUV and SXRs during the slow rise. The SOT data show that magnetic flux cancelation occurs along the neutral line of the filament in the hours before eruption, and this likely caused the low-lying reconnection that produced the microflaring and the slow rise leading up to the eruption.

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