RHESSI Science Nugget No. 192, "Kappa Distribution" (by Mitsuo Oka, Berkeley) - A simpler function fits both thermal and non-thermal hard X-ray components simultaneously.

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

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.