AAS 200th meeting, Albuquerque, NM, June 2002
Session 55. Solar Data Analysis and Calibration
Display, Wednesday, June 5, 2002, 10:00am-7:00pm, SW Exhibit Hall

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[55.09] Preliminary Analysis of Stokes Profiles via the Levenberg-Marquardt Method at the San Fernando Observatory

J.A. Ceja, S.R. Walton (California State University Northridge)

A Levenberg-Marquardt fitting technique was developed and applied to Stokes profiles obtained from the San Fernando Observatory's Video Spectra-Spectroheliograph (SFO-VSSHG). Fits were the result of a sum of Gaussians that fitted a given profile through the Marquardt method. The fits were then used to create maps of the magnetic field properties in the data. Herein, we present maps of these properties and their comparison to maps done by the current method of profile analysis at the observatory, the center of gravity method. Furthermore, the Marquardt method also provides a new dimension to the SFO-VSSHG data; it allows further analysis of the profile properties themselves, and we show some of these preliminary results as well. This research was supported by NSF grant ATM-0077624.

The author(s) of this abstract have provided an email address for comments about the abstract: josearmando@hotmail.com

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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.