From the variations in equivalent width of a selected set of Fraunhofer lines, we derived the variation of effective temperature and microturbulence velocity between the equator and the regions at heliographic latitude of ~ 72 ~ The reliability of the results (AT/T--O:kO.6 %, A~/ff --6 % ~ 13 %) nee
The horizontal variation of temperature in the low solar photosphere
β Scribed by Richard C. Altrock
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 384 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0038-0938
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β¦ Synopsis
Observations of the rms intensity fluctuations in the continuum obtained by Pravdjuk et al. (Solnechnye Dannye, No. 2, p. 70, 1974) from white-light photographs made with the Soviet Stratospheric Solar Observatory are analyzed to obtain a horizontal temperature-fluctuation amplitude as a function of depth. The results indicate that temperature fluctuations increase with depth monotonically from a small value at ~'sooo~0.5 (cf. Figure 2). The initial rise of AT appears quite steep, having a slope of approximately 20 K km -~. The model of Wilson (Solar Phys. 9, 303, 1969) is incompatible with the data. Convective flux in the present model is approximately 6% of the total flux at Zsooo = 1.
π SIMILAR VOLUMES
The general problem of interpreting granulation data, in particular Edmonds' r.m.s. intensity fluctuation distribution against heliocentric angle 0, is discussed. A inethod is developed for investigating a variety of models of inhomogelaeous departures fi'om radiative equilibrium using two dimensio