Sunrise/IMaX OBSERVATIONS OF CONVECTIVELY DRIVEN VORTEX FLOWS IN THE SUN

By José A. Bonet, I. Márquez, J. Almeida, J. Palacios, V. Pillet, S. Solanki, J. C. D. T. Iniesta, V. Domingo, T. Berkefeld, W. Schmidt and 16 more. 2008

167 citations recorded by the source corpus.

We characterize the observational properties of the convectively driven vortex flows recently discovered on the quiet Sun, using magnetograms, Dopplergrams, and images obtained with the 1 m balloon-borne Sunrise telescope. By visual inspection of time series, we find some 3.1 × 10−3 vortices Mm−2 minute−1, which is a factor of ∼1.7 larger than previous estimates. The mean duration of the individual events turns out to be 7.9 minutes, with a standard deviation of 3.2 minutes. In addition, we find several events appearing at the same locations along the duration of the time series (31.6 minutes). Such recurrent vortices show up in the proper motion flow field map averaged over the time series. The typical vertical vorticities are ≲6 × 10−3 s−1, which corresponds to a period of rotation of some 35 minutes. The vortices show a preferred counterclockwise sense of rotation, which we conjecture may have to do with the preferred vorticity impinged by the solar differential rotation.

Subfields: Artificial Intelligence, Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/717050204f69958b2e6f1ac2ca4558e98bccbbd8

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. M. Schüssler
2. S. Solanki
3. A. Title
4. José A. Bonet
5. V. Yurchyshyn
6. N. Krivova
7. C. Fröhlich
8. T. Bai

In Astronomy and Astrophysics

1. S. Solanki
2. M. Schüssler
3. A. Title
4. V. Domingo
5. G. Verth
6. D. Jess
7. F. Lepreti
8. V. Abramenko

In Atomic and Molecular Physics, and Optics

1. G. Verth
2. R. Morton
3. S. Solanki
4. S. Grant
5. Ioannis Giagkiozis
6. J. C. D. T. Iniesta
7. D. Jess
8. V. Fedun

Citations in the corpus

• Alfvén Waves in the Solar Atmosphere (2012, unknown): “8; Bonet et al. 2008).”
• Sunrise: INSTRUMENT, MISSION, DATA, AND FIRST RESULTS (2010, background): “However, both display vortical motions of weak magnetic field patches (see Bonet et al. 2010 for a study of the vortices in these data; cf. Steiner et al. 2010).”
• Multiwavelength Studies of MHD Waves in the Solar Chromosphere (2015, background): “Wedemeyer-Böhm et al. (2012) related these motions to photospheric vorticities which had been observed previously by Bonet et al. (2008).”
• ORBITAL MOTION OF HR 8799 b, c, d USING HUBBLE SPACE TELESCOPE DATA FROM 1998: CONSTRAINTS ON INCLINATION, ECCENTRICITY, AND STABILITY (2011, background): “…observatory (Martinez Pillet et al. 2011) allowed one the resolution of individual kG flux (Lagg et al. 2010) and exploration of vortex flow motions (Bonet et al. 2010), to mention a few (for more results from IMaX/Sunrise experiment see a special issue of The Astrophysical Journal Letters, 713).”