No. 170,  Do Slow Waves Trigger Pulsations in Two-Ribbon Flares, by Andrew Inglis and Brian Dennis: slow MHD waves, QPPs, and hard X-rays.

See http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Do_slow_waves_trigger_pulsations_in_two-ribbon_flares%3F_An_observational_search

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.