No. 212, "Hard X-ray Footpoint Asymmetry," by Ya-Hui YANG: The behavior of conjugacy in flare footpoints. 

See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets .

Older Nuggets are also available at
We publish these at roughly two-week intervals and welcome contributions, which should be related, at least loosely, to RHESSI science.