NLFFF extrapolation of an emerging active region
28 January 2015
The work and achievements of members of the Solar group were recognised by the Royal Astronomical Society in their annual awards on 12th January 2015.
A new EIS nugget for the month of September has been written by G. Valori of LESIA-Observatoire de Paris. Nonlinear force-free field (NLFFF) extrapolation was used to investigate the structure of the field at the time of the main emergence. Here, the extrapolation is based on an SOT/SP vector magnetogram obtained from the scan on 4 July 11:58-12:34 UT.