2D Observation of A Small Active Region in Halpha


Gültekin A., Bostanci Güver Z. F., Erdoğan Al N.

ASP Conference Series Coimbra Solar Physics Meeting: Physics of the Chromospheric Plasma, Coimbra, Portekiz, 9 - 13 Ekim 2006, cilt.368, ss.119-122

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 368
  • Basıldığı Şehir: Coimbra
  • Basıldığı Ülke: Portekiz
  • Sayfa Sayıları: ss.119-122
  • İstanbul Üniversitesi Adresli: Evet

Özet

A small active region on the solar chromosphere was observed with high spatial and spectral resolution in Hα. The data were obtained with the Göttingen Fabry-Perot Spectrometer mounted in the Vacuum Tower Telescope at the Observatorio del Teide in May 2002. Intensity and velocity maps for different line widths were derived over the two-dimensional field of view by applying the Lambdameter method. Some physical parameters like the source function, the line-of-sight velocity, the Doppler width, and the optical depth of fibril-like structures were determined using Beckers’ cloud model. First results of this study are presented.