Sunspot continuum from 1 to 10 mum and the umbral temperature models

Abstract

Infrared flux in Zwaan`s (1974) and Boyer`s (1980) sunspot models has been calculated in the wavelength range 1 to 10 mu m, taking into account the molecular line haze opacity (Joshi et al. 1979). The calculations are compared with Sitnik`s (1980) observations in the available wavelenght region 1 to 2.1 mu m and corrections in the corresponding models are suggested