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A comparison of synthetic and measured solar continuum intensities and limb darkening coefficients

✍ Scribed by T. R. Ayres

Publisher
Springer
Year
1978
Tongue
English
Weight
409 KB
Volume
57
Category
Article
ISSN
0038-0938

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✦ Synopsis

Absolute continuum intensities and wavelength-dependent low-order polynomial fits to optical and infrared continuum limb darkening provide useful discriminants among single-component models of the solar photosphere. The thermal structure in best quantitative agreement with the recent center-limb measurements by Pierce and Slaughter (1977) and by Pierce et. al. (1977) is the semiempirical model by Vernazza, Avrett and Loeser (VAL). However, the VAL model M temperatures must be scaled upward by a factor of 1.0154-0.005 to be consistent with the Labs and Neckel absolute calibration of continuum high points in the optical region 0.40-0.65 t~m.

πŸ“œ SIMILAR VOLUMES

Limb-darkening and solar cycle variation
Limb-darkening and solar cycle variation of sunspot intensities
✍ F. Albregtsen; P. B. JorΓ₯s; P. Maltby πŸ“‚ Article πŸ“… 1984 πŸ› Springer 🌐 English βš– 677 KB

New observations of the umbral limb-darkening are presented. We find a real and significant decrease in the umbra/photosphere intensity ratio towards the limb. This result contrasts the findings of previous authors and we believe this to be the first time such a decrease is reported. Our conclusion