Journal of The Korean Astronomical Society (천문학회지)

The Korean Astronomical Society (한국천문학회)
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SMALL-SCALE Hα DYNAMIC FEATURES SUPPORTED BY CHROMO SPHERIC MAGNETIC RECONNECTION

  • LEE SANGWOO (Astronomy Program, SEES, Seoul National University) ;
  • YUN HONG SIK (Astronomy Program, SEES, Seoul National University) ;
  • CHAE JONGCHUL (Department of Astronomy and Space Science, Chungnam National University) ;
  • GOODE PHILIP R. (Big Bear Solar Observatory, NJIT)
  • Published : 2003.06.01
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Abstract

In the present study, we have investigated morphology and evolution of small-scale Ha dynamic features on the quiet sun by analyzing video magnetograms and high resolution Ha images simultaneously taken for 5 hours at Big Bear Solar Observatory on April 18, 1997. From comparisons between time sequential longitudinal magnetograms and H$\alpha$ images covering $150" {\times} 150"$, several small-scale H$\alpha$ dynamic features have been observed at a site of magnetic flux cancellation. A close relationship between such features and cancelling magnetic fluxes has been revealed temporarily and spatially. Our results support that material injection by chromospheric magnetic reconnect ion may be essential in supporting numerous small-scale H$\alpha$ dynamical absorption features, being in line with recent observational studies showing that material injection by chromospheric magnetic reconnect ion is essential for the formation of solar filaments.

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References

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