Flows in Active Regions Inferred from the Time-distance and the DAVE4VM

Flows in Active Regions Inferred from the Time-distance and the DAVE4VM

Case 1: AR11084

Flows in the AR11084 at 04:00 July 2 2010 on the photosphere from DAVE4VM (left) and at -0.5 Mm from Time-Distance (right).

Height

Photosphere

NOT SCALED

Rempel’s numerical simulation

Rempel’s numerical simulation

Case 2: AR11158

Shear motion

Spinning

Flow of AR11158 at 18:00 UT Feb. 14 2011 from DAVE4VM (top) and Time-Distance (bottom).

Shear motion

Spinning

AR11158 at 18:00 Feb. 14 2011.

Summary

• For stable, mature sunspots, the flow in the sunspots is pretty consistent in the range from -0.5 Mm to the photosphere;

• Except for the flow in the sunspots that seems to switch from inflow to outflow earlier at the photosphere than at -0.5 Mm.

• For emerging, complex sunspots, the outflow surrounding the sunspots are consistent within -0.5 Mm and the photosphere; part of the shear motion along the magnetic neutral lines is consistent within that range;

• Inflow in the sunspots and rotation motion seem not to be agreeable at -0.5 Mm and in the photosphere.

Vertical velocity at the photosphere (left) from DAVE4VM and -0.5 Mm (right) from the time-distance.

AR11158 at 02:00 Feb. 15 2011.

AR11158 at 2011 Feb. 15 02:00UT