Invited speakers (afternoon): David Alexander (Rice University) Chip Manchester (University of Michigan)

Brad Hindman (JILA/University of Colorado)

G-band intensity(photosphere)

Line-of-sight magnetogram(photosphere)

Active Region Magnetic Fields: From the Photosphere to the Corona

Masahito Kubo (HAO/NCAR): Magnetic flux budget of a decaying sunspot

Positive

Negative

inner areaouter area

MMFs Flux cancellation

moat flow

MMFs

Flux cancellation

Sunspot (penumbra) Moat region Outside moat region

moat flow

Brad Hindman (JILA/University of Colorado): Subsurface circulations established by active regions

8/6/09 SHINE Meeting

Plage

Sunsp

otPlage

Deep outflows(depth > 10 Mm)

Surface inflows(depth < 7 Mm)

Moat flows(depth < 2 Mm)

Quiet

PhotosphereQuiet

David Alexander (Rice University): Inferences from observations of active region flux

d: total helicity flux (x1042Mx2) over 5 days for the positive and negative

polarities

c: helicity injection rate (x1040Mx2 per hr) the

positive and the negative polarities

HELICITY IS ASYMMETRIC

FOLLOWING POLARITY (*)

SHOWS MORE FLUCTUATION

Is the corona, its topology and evolution consistent with the dynamics and evolution of the sub-surface expectations?

Can we infer gross properties of the near sub-surface region from surface observations? e.g. can the observations usefully inform the models?

Nature or nurture? Is solar activity (flares/CMEs etc.) a result of genetics (properties defined at birth) or environmental conditions (evolution of AR atmosphere, interaction with large scale corona, …)

Chip Manchester (University of Michigan): Study of flux emergence: Photospheric shear flows that produce coronal eruptions

Shine session proposal:

Observations and modeling of the theoreticians active region, subphotosphere to corona

New cycle active region case studies Submit results for session