Observations of very low-contrast white-light solar structures utilizing differential photometry

Details Observations of very low-contrast white-light solar structures utilizing differential photometry Observations of very low-contrast white-light solar structures utilizing differential photometry

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph...99...39s&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 99, Sept. 1985, p. 39-42.

Physics

Astronomical Photometry, Photosphere, Solar Atmosphere, Power Spectra, Spatial Distribution

Scientific paper

The spatial derivative of the intensity structure of the photosphere has been investigated utilizing a differential photometer system capable of recording intensity variations on the solar disc of 0.05 percent/arcsec. Time evolution images of the differential intensity profile for a 562.5 arcsec segment of the solar photosphere show a high degree of structure. To a large extent, the observed structure persists for times greater than one hour and is rather highly ordered in spatial distribution. Power spectra of the spatial structure averaged over one hour show maxima at 28,000 km and 16,000 km, close to the spatial scale expected for intensity perturbations from supergranulation.

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