HR: 09:28h
AN: SH21D-05    [Abstracts]
TI: On the use of STEREO Measurements for Solar Rotational Tomography
AU: Frazin, R A
EM: frazin@uiuc.edu
AF: University of Illinois, 1308 West Main, Urbana, IL 61801 United States
AU: * Kamalabadi, F
EM: farzadk@uiuc.edu
AF: University of Illinois, 1308 West Main, Urbana, IL 61801 United States
AU: Butala, M
EM: butala@uiuc.edu
AF: University of Illinois, 1308 West Main, Urbana, IL 61801 United States
AB: Polarized brightness measurements made by coronagraphs give the electron density ($N_e$) 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 $N_e$. Reconstructed three-dimensional $N_e$\ 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.
DE: 7509 Corona
DE: 7536 Solar activity cycle (2162)
DE: 7594 Instruments and techniques
DE: 6982 Tomography and imaging
DE: 3260 Inverse theory
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting