43. Detection of Fast-Moving Waves Propagating Outward along Sunspots’ Radial Direction in the Photosphere

Contributed by Junwei Zhao. Posted on August 29, 2015

A newly discovered, fast-moving wave propagates outward along sunspots’ radial direction and may provide new diagnostics of the sunspot subsurface structure.

23. Active Regions with Superpenumbral Whirls or Sunspots Like Pinwheels

Contributed by Rudi Komm. Posted on July 29, 2014

The magnetic field of active region NOAA 11092 shows a persistent counter-clockwise twist in the solar atmosphere from the photosphere to the corona. The subsurface flows associated with this region are twisted in the opposite direction.

HMI Science Nuggets

Tag Archives: subsurface flows

43. Detection of Fast-Moving Waves Propagating Outward along Sunspots’ Radial Direction in the Photosphere

23. Active Regions with Superpenumbral Whirls or Sunspots Like Pinwheels