Infrared Photometry of Solar Active Regions

Journal of astrophysics and astronomy

J. A. Bonet¹  Îœ. S'anchez Cuberes¹  A. Hanslmeier²  Îœ. Sobotka1¹  Îœ. V'azquez¹ 

[1] Institute de Astrof'isica de Canarias, E-38200 La Laguna, Tenerife, Spain.$$;Institut für Geophysik, Astrophysik und Meteorologie, Universitätsplatz 5, A-8010 Graz, Austria.$$

关键词: Solar photosphere;    faculae;    pores.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

Simultaneous time series of broad-band images of two active regions close to the disk center were acquired at the maximum (0.80 𝜇m) and minimum (1.55 𝜇m) continuum opacities. Dark faculae are detected in images obtained as weighted intensity differences between both wave-length bands. The elements of quiet regions can be clearly distinguished from those of faculae and pores in scatter plots of brightness temperatures. There is a smooth transition between faculae and pores in the scatter plots. These facts are interpreted in terms of the balance between the inhibition of convective energy transport and the lateral radiative heating.

【 授权许可】

Unknown