An Empirical Description of Zodiacal Light as Measured by SMEI

Details An Empirical Description of Zodiacal Light as Measured by SMEI An Empirical Description of Zodiacal Light as Measured by SMEI

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh32a..06b&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SH32A-06

Physics

2129 Interplanetary Dust

Scientific paper

The SMEI visible-light cameras provide a photometric skymap for each 102-minute orbit with the objective to observe transient Coronal Mass Ejections (CMEs). Zodiacal light is a significant contributor to these maps and must be removed in the data-analysis in order to detect and characterize the much fainter CMEs. We have analyzed over three years of the SMEI calibration data that were taken at the highest spatial resolution to derive the yearly averaged global distribution of zodiacal light between solar elongations of 20 and 180 degrees. Residuals on the individual sky maps from this global average provide information on the detailed geometry of the clouds. We present preliminary results of the analysis, including a characterization of the Gegenschein, possible dust bands, and annual variations.

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