No. 168,  Supra-Arcade Downflows, by Sabrina Savage and David McKenzie: a re-interpretation of the famous SAD tadpoles.

See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Supra-Arcade_Downflows

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.