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Broadband Measurements of Facular Photometric Contrast with the Solar Bolometric Imager View all abstracts by submitter

Pietro Bernasconi   Submitted: 2004-06-30 08:52

We present the first photometric measurements of solar faculae in broadband light. Our measurements were made during the recent flight of the Solar Bolometric Imager (SBI), a 30-cm balloon-borne telescope which imaged the Sun with spectrally constant response between about 0.31 and 2.6 microns. Our curve of facular contrast versus limb distance agrees well with values obtained by black-body correction of monochromatic measurements. This decreases uncertainty in the facular irradiance contribution, which limits searches for other possible mechanisms of solar luminosity variation, besides changing photospheric magnetism.

Authors: Foukal, P., Bernasconi, P. N., Eaton, H. A. C., and Rust, D. M.
Projects: None

Publication Status: Published in ApJ 611, L57 (2004)
Last Modified: 2004-07-22 15:04
Go to main E-Print page  Automated Recognition of Active Regions on Full Disk Solar Spectroheliograms using H α , Ca II K3 and Fe XII 195  wavelengths  A Model for Bright Knots in Solar Flare Loops  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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