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Variations in the axisymmetric transport of magnetic elements on the Sun: 1996-2010
David H. Hathaway, Lisa Rightmire
We measure the axisymmetric transport of magnetic flux on the Sun by cross-correlating narrow strips of data from line-of-sight magnetograms obtained at a 96-minute cadence by the…
The Advection of Supergranules by the Sun's Axisymmetric Flows
David H. Hathaway, Peter E. Williams, Kevin Dela Rosa +1
We show that the motions of supergranules are consistent with a model in which they are simply advected by the axisymmetric flows in the Sun's surface shear layer. We produce a 10-…
The Advection of Supergranules by Large-Scale Flows
David H. Hathaway, Peter E. Williams, Manfred Cuntz
We produce a 10-day series of simulated Doppler images at a 15-minute cadence that reproduces the spatial and temporal characteristics seen in the SOHO/MDI Doppler data. Our simula…
Does the current minimum validate (or invalidate) cycle prediction methods?
David H. Hathaway
This deep, extended solar minimum and the slow start to Cycle 24 strongly suggest that Cycle 24 will be a small cycle. A wide array of solar cycle prediction techniques have been a…