No. 179, Dimmings and Sustained Gamma-Ray Events, by Hugh Hudson and Nicola Omodei. Coronal disruptions reveal themselves as depletions and long-duration gamma-ray emission. See

http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Dimmings_and_Sustained_Gamma-Ray_Events

Older Nuggets are available at
http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets
 (the current series, 2008-present), and at
http://sprg.ssl.berkeley.edu/~tohban/nuggets/ (the original series, 2005-2008).

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