Monthly Archives: June 2014

21. Three-ribbon Solar Flares: What Do They Imply for the 3D Magnetic Field Structure?

Contributed by Haimin Wang. Posted on June 27, 2014

Combining the outstanding capability of HMI/SDO  and NST/BBSO,  we studied two rarely observed three-ribbon flares. The flaring site is characterized with an intriguing &#8220fish-bone&#8221-like morphology. These results are discussed in favor of reconnection along the coronal null-line.

20. Solar Meridional Flow in the Shallow Interior during the Rising Phase of Cycle 24

Contributed by Junwei Zhao. Posted on June 18, 2014

Subsurface meridional flow speed shows an anti-correlation with the magnetic flux being transported poleward above the latitude of 35&#176. In the lower latitude, the residual meridional flow, after a long-time mean profile is subtracted, shows converging flow toward the activity belts.