Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.0605f&link_type=abstract
American Astronomical Society, SPD meeting #40, #6.05; Bulletin of the American Astronomical Society, Vol. 41, p.812
Astronomy and Astrophysics
Astronomy
Scientific paper
We describe a new technique for estimating the three-dimensional vector electric field in the solar atmosphere by using a time-sequence of vector magnetograms to find an electric field distribution that obeys all 3 components of Faraday's law. The technique uses a ``poloidal-toroidal'' decomposition (PTD) to describe the electric field in terms of two scalar functions. The ``inductive'' PTD solutions to Faraday's Law are not unique, however, since additional contributions to the electric field from a potential function have no effect on Faraday's law.
We then describe how estimates for the total electric field including both the inductive and potential components can be made by using variational techniques. The variational approach we develop is similar to Longcope's ``Minimum Energy Fit'' technique, in that the electric field obeys the vertical component of the magnetic induction equation, while also minimizing a positive definite functional. The purely potential part of the electric field can then be recovered by subtracting the PTD electric field from the total field.
Abbett William P.
Bercik David John
Fisher George H.
Welsch Brian Thomas
No associations
LandOfFree
Estimating Electric Fields from Vector Magnetogram Sequences does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Estimating Electric Fields from Vector Magnetogram Sequences, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Estimating Electric Fields from Vector Magnetogram Sequences will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1111929