FIRST HIGH-RESOLUTION IMAGES OF THE SUN IN THE 2796 Å Mg II k LINE

Riethmüller, T. L.; Solanki, S. K.; Hirzberger, J.; Danilovic, S.; Barthol, P.; Gandorfer, A.; Gizon, L.; Berkefeld, T.; Schmidt, W.; Knölker, M.

doi:10.1088/2041-8205/776/1/L13

Title: FIRST HIGH-RESOLUTION IMAGES OF THE SUN IN THE 2796 Å Mg II k LINE

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Abstract

We present the first high-resolution solar images in the Mg II k 2796 Å line. The images, taken through a 4.8 Å broad interference filter, were obtained during the second science flight of Sunrise in 2013 June by the Sunrise Filter Imager (SuFI) instrument. The Mg II k images display structures that look qualitatively very similar to images taken in the core of Ca II H. The Mg II images exhibit reversed granulation (or shock waves) in the internetwork regions of the quiet Sun, at intensity contrasts that are similar to those found in Ca II H. Very prominent in Mg II are bright points, both in the quiet Sun and in plage regions, particularly near the disk center. These are much brighter than at other wavelengths sampled at similar resolution. Furthermore, Mg II k images also show fibril structures associated with plage regions. Again, the fibrils are similar to those seen in Ca II H images, but tend to be more pronounced, particularly in weak plage.

Authors:

Riethmüller, T. L.; Solanki, S. K.; Hirzberger, J.; Danilovic, S.; Barthol, P.; Gandorfer, A.; Gizon, L. ^[1]; Berkefeld, T.; Schmidt, W. ^[2]; Knölker, M. ^[3]

Max-Planck-Institut für Sonnensystemforschung, Max-Planck-Str. 2, D-37191 Katlenburg-Lindau (Germany)
Kiepenheuer-Institut für Sonnenphysik, Schöneckstr. 6, D-79104 Freiburg (Germany)
High Altitude Observatory, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307-3000 (United States)

Publication Date:: Thu Oct 10 00:00:00 EDT 2013

OSTI Identifier:: 22215412

Resource Type:: Journal Article

Journal Name:: Astrophysical Journal Letters

Additional Journal Information:: Journal Volume: 776; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CHROMOSPHERE; FACULAE; FILTERS; GRANULATION; IMAGES; INTERFERENCE; PLAGES; RESOLUTION; SHOCK WAVES; SUN; WAVELENGTHS

Citation Formats


                    Riethmüller, T. L., Solanki, S. K., Hirzberger, J., Danilovic, S., Barthol, P., Gandorfer, A., Gizon, L., Berkefeld, T., Schmidt, W., Knölker, M., and Del Toro Iniesta, J. C., E-mail: riethmueller@mps.mpg.de. FIRST HIGH-RESOLUTION IMAGES OF THE SUN IN THE 2796 Å Mg II k LINE.  United States: N. p., 2013. 
        Web.  doi:10.1088/2041-8205/776/1/L13.

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                    Riethmüller, T. L., Solanki, S. K., Hirzberger, J., Danilovic, S., Barthol, P., Gandorfer, A., Gizon, L., Berkefeld, T., Schmidt, W., Knölker, M., & Del Toro Iniesta, J. C., E-mail: riethmueller@mps.mpg.de. FIRST HIGH-RESOLUTION IMAGES OF THE SUN IN THE 2796 Å Mg II k LINE.  United States.  https://doi.org/10.1088/2041-8205/776/1/L13

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                    Riethmüller, T. L., Solanki, S. K., Hirzberger, J., Danilovic, S., Barthol, P., Gandorfer, A., Gizon, L., Berkefeld, T., Schmidt, W., Knölker, M., and Del Toro Iniesta, J. C., E-mail: riethmueller@mps.mpg.de. 2013.  
        "FIRST HIGH-RESOLUTION IMAGES OF THE SUN IN THE 2796 Å Mg II k LINE".  United States.  https://doi.org/10.1088/2041-8205/776/1/L13.

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@article{osti_22215412,

  title        = {FIRST HIGH-RESOLUTION IMAGES OF THE SUN IN THE 2796 Å Mg II k LINE},

  author       = {Riethmüller, T. L. and Solanki, S. K. and Hirzberger, J. and Danilovic, S. and Barthol, P. and Gandorfer, A. and Gizon, L. and Berkefeld, T. and Schmidt, W. and Knölker, M. and Del Toro Iniesta, J. C., E-mail: riethmueller@mps.mpg.de},

  abstractNote = {We present the first high-resolution solar images in the Mg II k 2796 Å line. The images, taken through a 4.8 Å broad interference filter, were obtained during the second science flight of Sunrise in 2013 June by the Sunrise Filter Imager (SuFI) instrument. The Mg II k images display structures that look qualitatively very similar to images taken in the core of Ca II H. The Mg II images exhibit reversed granulation (or shock waves) in the internetwork regions of the quiet Sun, at intensity contrasts that are similar to those found in Ca II H. Very prominent in Mg II are bright points, both in the quiet Sun and in plage regions, particularly near the disk center. These are much brighter than at other wavelengths sampled at similar resolution. Furthermore, Mg II k images also show fibril structures associated with plage regions. Again, the fibrils are similar to those seen in Ca II H images, but tend to be more pronounced, particularly in weak plage.},

  doi          = {10.1088/2041-8205/776/1/L13},

  url          = {https://www.osti.gov/biblio/22215412},
  journal      = {Astrophysical Journal Letters},

  issn         = {2041-8205},

  number       = 1,

  volume       = 776,

  place        = {United States},

  year         = {Thu Oct 10 00:00:00 EDT 2013},

  month        = {Thu Oct 10 00:00:00 EDT 2013}

}

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