No. 258, “High Energies in the Inner Heliosphere,” by Hugh Hudson. Cosmic rays measure the coronal magnetic field at the source surface itself.

No. 259, “Return-current Model Spectra and Enhanced Plasma Resistivity,” by Meriem Alaoui and Gordon Holman. A basic return-current model matches RHESSI hard X-ray spectra and implies a need for anomalous resistivity.

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

listing the current series, 2008-present, and

http://sprg.ssl.berkeley.edu/~tohban/nuggets/

for 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.