Publications of The Korean Astronomical Society (천문학논총)

The Korean Astronomical Society (한국천문학회)
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THE SPATIAL SIZES OF FINE STRUCTURES IN A QUIESCENT PROMINENCE

태양 정온홍염에서 미세 구조의 공간적 규모

  • PARK YOUNG DEUK (Bohyunsan Optical Astronomy Observatory, Korea Astronomy Observatory) ;
  • YUN HONG SIK (Department of Astronomy, Seoul National University) ;
  • MOON YONG-JAE (Bohyunsan Optical Astronomy Observatory, Korea Astronomy Observatory)
  • Published : 1998.12.01
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Abstract

The size of fine structures in the quiescent prominence that appeared on August 16, 1992 has been estimated using power spectra generated from intensity variations of Ha images of the lower part of the prominence, which were taken with a G1 CCD camera attached to 25cm coronagraph at Norikura Coronal Station in Japan. The lower part of the prominence has shown a distinct intensity variation with optical thickness of $\tau=1\~5$. Our analysis yields a mean size of fine structures ranging from 350 km to 1,000 km, in good agreement with Hirayama(1985) and Zirker & Koutchmy(1989, 1991).

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