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Browsing by Author "Kalkofen, W"

Browsing by Author "Kalkofen, W"

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  • On the interchange instability of solar magnetic flux tubes. II. The influence of energy transport effects 
    Bunte, M; Hasan, S. S; Kalkofen, W (European Southern Observatory, 1993-06)
    We examine the interchange instability of thin photospheric magnetic flux tube models which satisfy both force and energy balance with their surroundings. The stability of the tubes is independent of the efficiency of ...
  • Results from a revisit to the K2V bright points 
    Sivaraman, K. R; Gupta, S. S; Livingston, W. C; Damé, L; Kalkofen, W; Keller, C. U; Smartt, R; Hasan, S. S (European Southern Observatory, 2000-11)
    We have used pairs of temporally simultaneous CaII K-line spectroheliograms and magnetic area scans to search for spatial correlation between the CaII K2V bright points in the interior of the network and corresponding ...
  • Spectral line radiation from solar small-scale flux tubes. II 
    Hasan, S. S; Kneer, F; Kalkofen, W (European Southern Observatory, 1998-04)
    We examine spectral line radiation from small-scale magnetic flux tubes in the solar atmosphere. This is a continuation of work by Kneer et al. (1996). The main difference with the previous investigation is in the choice ...
  • Spectral line radiation from solar small-scale magnetic flux tubes 
    Kneer, F; Hasan, S. S; Kalkofen, W (European Southern Observatory, 1996-01)
    We consider spectral line radiation from small-scale magnetic model flux tubes in the solar atmosphere. The structure of the tube is determined from the magnetostatic equations in the thin flux tube approximation. We assume ...

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