The Second Flight of the Sunrise Balloon-borne Solar Observatory

Overview of Instrument Updates, the Flight, the Data, and First Results

S. K. Solanki, T. L. Riethmüller, P. Barthol, S. Danilovic, W. Deutsch, H. P. Doerr, A. Feller, A. Gandorfer, D. Germerott, Laurent Gizon, B. Grauf, K. Heerlein, J. Hirzberger, M. Kolleck, A. Lagg, R. Meller, G. Tomasch, M. Van Noort, J. Blanco Rodríguez, J. L.Gasent Blesa & 15 others M. Balaguer Jiménez, J. C.Del Toro Iniesta, A. C.López Jiménez, D. Orozco Suarez, T. Berkefeld, C. Halbgewachs, W. Schmidt, A. Álvarez-Herrero, L. Sabau-Graziati, I. Pérez Grande, V. Martínez Pillet, G. Card, R. Centeno, M. Knölker, A. Lecinski

    Research output: Contribution to journalArticle

    Abstract

    The Sunrise balloon-borne solar observatory, consisting of a 1 m aperture telescope that provides a stabilized image to a UV filter imager and an imaging vector polarimeter, carried out its second science flight in 2013 June. It provided observations of parts of active regions at high spatial resolution, including the first high-resolution images in the Mg ii k line. The obtained data are of very high quality, with the best UV images reaching the diffraction limit of the telescope at 3000 after Multi-Frame Blind Deconvolution reconstruction accounting for phase-diversity information. Here a brief update is given of the instruments and the data reduction techniques, which includes an inversion of the polarimetric data. Mainly those aspects that evolved compared with the first flight are described. A tabular overview of the observations is given. In addition, an example time series of a part of the emerging active region NOAA AR 11768 observed relatively close to disk center is described and discussed in some detail. The observations cover the pores in the trailing polarity of the active region, as well as the polarity inversion line where flux emergence was ongoing and a small flare-like brightening occurred in the course of the time series. The pores are found to contain magnetic field strengths ranging up to 2500 G, and while large pores are clearly darker and cooler than the quiet Sun in all layers of the photosphere, the temperature and brightness of small pores approach or even exceed those of the quiet Sun in the upper photosphere.

    Original languageEnglish (US)
    Article number2
    JournalAstrophysical Journal, Supplement Series
    Volume229
    Issue number1
    DOIs
    StatePublished - Mar 1 2017

    Fingerprint

    sunrise
    solar observatories
    balloons
    observatory
    flight
    porosity
    photosphere
    time series
    polarity
    sun
    telescopes
    deconvolution
    image resolution
    inversions
    diffraction
    high resolution
    data reduction
    spatial resolution
    polarimeters
    coolers

    Keywords

    • Sun: chromosphere
    • Sun: faculae, plages
    • Sun: magnetic fields
    • Sun: photosphere
    • sunspots
    • techniques: polarimetric

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    The Second Flight of the Sunrise Balloon-borne Solar Observatory : Overview of Instrument Updates, the Flight, the Data, and First Results. / Solanki, S. K.; Riethmüller, T. L.; Barthol, P.; Danilovic, S.; Deutsch, W.; Doerr, H. P.; Feller, A.; Gandorfer, A.; Germerott, D.; Gizon, Laurent; Grauf, B.; Heerlein, K.; Hirzberger, J.; Kolleck, M.; Lagg, A.; Meller, R.; Tomasch, G.; Noort, M. Van; Rodríguez, J. Blanco; Blesa, J. L.Gasent; Jiménez, M. Balaguer; Iniesta, J. C.Del Toro; Jiménez, A. C.López; Suarez, D. Orozco; Berkefeld, T.; Halbgewachs, C.; Schmidt, W.; Álvarez-Herrero, A.; Sabau-Graziati, L.; Grande, I. Pérez; Pillet, V. Martínez; Card, G.; Centeno, R.; Knölker, M.; Lecinski, A.

    In: Astrophysical Journal, Supplement Series, Vol. 229, No. 1, 2, 01.03.2017.

    Research output: Contribution to journalArticle

    Solanki, SK, Riethmüller, TL, Barthol, P, Danilovic, S, Deutsch, W, Doerr, HP, Feller, A, Gandorfer, A, Germerott, D, Gizon, L, Grauf, B, Heerlein, K, Hirzberger, J, Kolleck, M, Lagg, A, Meller, R, Tomasch, G, Noort, MV, Rodríguez, JB, Blesa, JLG, Jiménez, MB, Iniesta, JCDT, Jiménez, ACL, Suarez, DO, Berkefeld, T, Halbgewachs, C, Schmidt, W, Álvarez-Herrero, A, Sabau-Graziati, L, Grande, IP, Pillet, VM, Card, G, Centeno, R, Knölker, M & Lecinski, A 2017, 'The Second Flight of the Sunrise Balloon-borne Solar Observatory: Overview of Instrument Updates, the Flight, the Data, and First Results', Astrophysical Journal, Supplement Series, vol. 229, no. 1, 2. https://doi.org/10.3847/1538-4365/229/1/2
    Solanki, S. K. ; Riethmüller, T. L. ; Barthol, P. ; Danilovic, S. ; Deutsch, W. ; Doerr, H. P. ; Feller, A. ; Gandorfer, A. ; Germerott, D. ; Gizon, Laurent ; Grauf, B. ; Heerlein, K. ; Hirzberger, J. ; Kolleck, M. ; Lagg, A. ; Meller, R. ; Tomasch, G. ; Noort, M. Van ; Rodríguez, J. Blanco ; Blesa, J. L.Gasent ; Jiménez, M. Balaguer ; Iniesta, J. C.Del Toro ; Jiménez, A. C.López ; Suarez, D. Orozco ; Berkefeld, T. ; Halbgewachs, C. ; Schmidt, W. ; Álvarez-Herrero, A. ; Sabau-Graziati, L. ; Grande, I. Pérez ; Pillet, V. Martínez ; Card, G. ; Centeno, R. ; Knölker, M. ; Lecinski, A. / The Second Flight of the Sunrise Balloon-borne Solar Observatory : Overview of Instrument Updates, the Flight, the Data, and First Results. In: Astrophysical Journal, Supplement Series. 2017 ; Vol. 229, No. 1.
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