The formation of G-band bright points. I: Standard LTE modelling

Preprint

19 October 2000

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0010390

Abstract

Assuming LTE, we synthesise solar G band spectra from the semiempirical flux-tube model of Briand Solanki (1995). The results agree with observed G-band bright-point contrasts within the uncertainty set by the amount of scattered light. We find that it is the weakening of spectral lines within the flux tube that makes the bright-point contrast in the G band exceed the continuum contrast. We also synthesise flux-tube spectra assuming LTE for the full wavelength range from UV to IR, and identify other promising passbands for flux-tube observations.

Keywords

BAND BRIGHT POINT
SCATTERED LIGHT
STANDARD LTE
ASSUMING LTE
BRIGHT POINT
UNCERTAINTY
FLUX TUBE

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Version 1, 2000-10-19, ArXiv

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