On the use of STEREO Measurements for Solar Rotational Tomography

Details On the use of STEREO Measurements for Solar Rotational Tomography On the use of STEREO Measurements for Solar Rotational Tomography

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsh21d..05f&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SH21D-05

Physics

7509 Corona, 7536 Solar Activity Cycle (2162), 7594 Instruments And Techniques, 6982 Tomography And Imaging, 3260 Inverse Theory

Scientific paper

Polarized brightness measurements made by coronagraphs give the electron density (Ne) integrated along the line of sight (LOS). Solar rotational tomography (SRT) exploits the view angles provided by Sun's rotation to remove the effects of LOS integration and form three-dimensional images of Ne. Reconstructed three-dimensional Ne\ images based on LASCO-C2 data are presented. One difficulty with SRT is that the structure of the corona changes as the Sun rotates. This effect can be mitigated with simultaneous multiple view angles, such as those provided by the STEREO mission. In this work, SRT is applied to a time-dependent model corona with STEREO and single spacecraft geometries, and the effects of time-variability in the reconstructions are discussed.

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