Tomography of the solar corona. II. Robust, regularized, positive estimation of the three-dimensional electron density distribution from LASCO-C2 polarized white-light images

Richard A. Frazin, Paul Janzen

Research output: Contribution to journalArticlepeer-review

Abstract

Solar rotational tomography is used to determine the three-dimensional electron density distribution of the solar corona from 2.4 to 6.0 R . The robust, regularized, positive estimation method, described in a previous paper, is demonstrated on test cases and on LASCO-C2 data. Because the solar rotational pole is inclined to the plane of the ecliptic by about 7°, the tomographic inversion requires a full three-dimensional treatment instead of a series of two-dimensional inversions. The LASCO data are taken from the first Whole Sun Month, which was a period of low solar activity.

Original languageEnglish
Pages (from-to)408-422
Number of pages15
JournalAstrophysical Journal
Volume570
Issue number1 I
DOIs
StatePublished - May 1 2002

Keywords

  • Methods: data analysis
  • Sun: corona

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