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Multidirectional scanning of active regions with a slit-jaw spectrograph and a solar chromatograph

I: Description of the method and some preliminary results for the flare event of August 4th 1972

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Abstract

At the Swedish Solar Observatory in Anacapri we have simultaneously used the following combination of instruments in our investigation of active regions:

  1. (1)

    A spectrograph with an image rotator placed in front of the slit.

  2. (2)

    A subtractive double dispersive spectrograph (solar Chromatograph).

  3. (3)

    A Hα+0.5 Å patrol instrument. Scans over the 3b flare of August 4th 1972 are used to illustrate the method. The illustrations clearly show downflowing matter connected with bright knots and filaments in the emitting area, possibly in accordance with Hyder's infall-impact mechanism.

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References

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Authors and Affiliations

  1. Swedish Astrophysical Station, Anacapri, Italy

    U. Kusoffsky

  2. Physics Dept., Uppsala Universitets filial, Örebro, Sweden

    G. Pålsgård

Authors
  1. U. Kusoffsky
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  2. G. Pålsgård
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Kusoffsky, U., Pålsgård, G. Multidirectional scanning of active regions with a slit-jaw spectrograph and a solar chromatograph. Sol Phys 30, 121–127 (1973). https://doi.org/10.1007/BF00156180

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  • DOI: https://doi.org/10.1007/BF00156180

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