Brad Hindman (JILA/University of Colorado)
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Brad Hindman (JILA/University of Colorado). Invited speakers (afternoon): David Alexander (Rice University) Chip Manchester (University of Michigan). Active Region Magnetic Fields: From the Photosphere to the Corona.

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Invited speakers (afternoon): David Alexander (Rice University)

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Invited speakers afternoon david alexander rice university

Brad Hindman (JILA/University of Colorado)

Invited speakers (afternoon):

David Alexander (Rice University)

Chip Manchester (University of Michigan)


Invited speakers afternoon david alexander rice university

Active Region Magnetic Fields: From the Photosphere to the Corona

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

G-band intensity

(photosphere)

Line-of-sight magnetogram

(photosphere)


Invited speakers afternoon david alexander rice university

inner area

outer area

Positive

Negative

Sunspot (penumbra)

Moat region

Outside moat region

moat flow

moat flow

MMFs

Flux cancellation

MMFs

Flux cancellation


Invited speakers afternoon david alexander rice university

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


Invited speakers afternoon david alexander rice university

Plage

Plage

Sunspot

Quiet

Quiet

Photosphere

Moat flows

(depth < 2 Mm)

Surface inflows

(depth < 7 Mm)

Deep outflows

(depth > 10 Mm)


Invited speakers afternoon david alexander rice university

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

FOLLOWING POLARITY (*) SHOWS MORE FLUCTUATION

HELICITY IS ASYMMETRIC

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


Invited speakers afternoon david alexander rice university

  • 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, …)


Invited speakers afternoon david alexander rice university

Chip Manchester (University of Michigan):

Study of flux emergence: Photospheric shear flows that produce coronal eruptions


Invited speakers afternoon david alexander rice university

Shine session proposal:

Observations and modeling of the theoreticians active region,

subphotosphere to corona

New cycle active region case studies

Submit results for session


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