No. 180, "The Slowest Flare," by Sam Freeland and Hugh Hudson: SOL2012-07-17 had the slowest GOES rise time for any major flare (M or X) since 1995.
http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/RHESSI_Science_Nuggets
The Nugget archive is 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.