Observations of December 2006 events

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Presentation transcript:

Observations of December 2006 events Yang Liu – Stanford University yliu@solar.stanford.edu

From GOES

Observation from ACE

LASCO observation

CMEs and Dst (from Gopalswamy’s group) v(halo)=1774 km/s v(halo)=1042 km/s

December 13 2006 flare

Magnetic field on the Sun AR10930

Magnetic distribution over the Sun’s surface MDI AR10930 SOLIS

AR10930 and large-scale magnetic field.

Evolution of AR10930 from Hinode

Vector field on Dec 12 (20:30UT) (from Hinode) Observation Potential Field highly sheared along the neutral line.

Vector field on Dec 13 (04:30UT) (from Hinode) Observation Potential Field

NLFFF (only closed field lines plotted) (from McTiernan’s code available in SSW) Dec 12 20:30 UT Dec 13 04:30 UT

Surface flow map derived from Longcope’s MEF code

Energy of AR10930 main spot fast-spin spot Vertical electric current Magnetic field Poynting from emerging flux Poynting from surface flow