SOLDYN : Unravelling the dynamics of the Solar Atmosphere

The aim of the SOLDYN project is to advance our understanding of the complex dynamics of the  solar atmosphere through the combination of high quality observations from both ground-based and space-born instruments. 

About the project

The Sun is our star and governs the solar system. There is a long scientific tradition of observing and studying the Sun but many fundamental questions remain unclear. For example, we still lack detailed understanding on why the outer solar atmosphere, the corona, is so hot (millions of degrees) while the solar surface is only few thousands of degrees. Furthermore, it is largely unkown how the corona is filled with mass and what drives the solar wind that supplies our planetary system with plasma and magnetic fields. It has been realised that a small layer in the solar atmosphere, the interface layer between the surface and the corona, may hold the key to answers to these questions. This interface layer, consisting of what is known as the chromosphere and transition region, is very shallow, only a few thousand kilometers but also very dynamic. Its complex dynamics are dominated by magnetic fields and radiative effects and is very challenging to understand. NASA has launched a small explorer spacecraft in the summer of 2013, the Interface Region Imaging Spectrograph (IRIS), which is specifically designed to observe this part of the solar atmosphere with unprecedented capabilities. However, IRIS is mostly sensitive to this small part of the atmosphere. We plan to provide key data that are essentially missing in the IRIS' arsenal: high-quality observations of the atmosphere below. These observations will be acquired through coordinated campaigns with the Swedish 1-m Solar Telescope (SST) on La Palma. In addition, we will use large-scale, state of the art, computer simulations of the solar atmosphere in combination with advanced numerical tools to interpret the complex observational data. The combination of coordinated IRIS and SST observations and advanced numerical simulations will allow to construct a comprehensive picture of the solar atmosphere.
 

The Swedish 1-metre Solar Telescope (SST) on La Palma in the Canary Islands, one of the prime facilities for high resolution observations of the Sun. The solar physics group at ITA and RoCS has a long tradition of observing with the SST and has an annual quota of more than 40 observing days per year. 
Interface Region Imaging Spectrograph
IRIS in the clean room prior to launch in June 2013. The SOLDYN project has conducted a number of successful coordinated observing campaigns with IRIS and SST. During these campaigns, both telescopes are pointing at the same area on the Sun thus providing comprehensive measurements of the solar atmosphere over a extensive height range. (photo courtesy of Jim Dowdall / Lockheed Martin)

Financing

The SOLDYN project is funded by the University of Oslo and the Research Council of Norway and runs from January 2016 to December 2020.
 

Cooperation

The SOLDYN project is closely integrated in the Rosseland Centre for Solar Physics (RoCS)
 

Publications

  • Ada Ortiz; Viggo Hansteen; Daniel Elias Nóbrega Siverio & Luc Rouppe van der Voort (2020). Ellerman bombs and UV bursts: reconnection at different atmospheric layers. Astronomy and Astrophysics.  ISSN 0004-6361.  633
  • Sara Esteban Pozuelo; Jaime de la Cruz Rodriguez; Ainar Drews; Luc Rouppe van der Voort; Göran B. Scharmer & Mats Carlsson (2019). Observationally Based Models of Penumbral Microjets. Astrophysical Journal (ApJ).  ISSN 0004-637X.  870
  • L. P. Chitta; A. R. C. Sukarmadji; Luc Rouppe van der Voort & H. Peter (2019). Energetics of magnetic transients in a solar active region plage. Astronomy and Astrophysics.  ISSN 0004-6361.  623
  • Gregal Joan Maria Vissers; Jaime de la Cruz Rodriguez; Tine Libbrecht; Luc Rouppe van der Voort; Göran B. Scharmer & Mats Carlsson (2019). Dissecting bombs and bursts: Non-LTE inversions of low-atmosphere reconnection in SST and IRIS observations. Astronomy and Astrophysics.  ISSN 0004-6361.  627
  • Luc Rouppe van der Voort & Ainar Drews (2019). Penumbral microjets at high spatial and temporal resolution. Astronomy and Astrophysics.  ISSN 0004-6361.  626
  • Peter H. Keys; Aaron Reid; Mihalis Mathioudakis; Sergiy Shelyag; Vasco Manuel de Jorge Henriques; Rebecca L. Hewitt; Dario Del Moro; Shahin Jafarzadeh; David B. Jess & Marco Stangalini (2019). The magnetic properties of photospheric magnetic bright points with high-resolution spectropolarimetry. Monthly notices of the Royal Astronomical Society.  ISSN 0035-8711.  488, s L53- L58
  • Souvik Bose; Vasco Manuel de Jorge Henriques; Luc Rouppe van der Voort & Tiago Mendes Domingos Pereira (2019). Semi-empirical model atmospheres for the chromosphere of the sunspot penumbra and umbral flashes. Astronomy and Astrophysics.  ISSN 0004-6361.  627
  • Gregal Joan Maria Vissers; Luc Rouppe van der Voort & Robert Rutten (2019). Automating Ellerman bomb detection in ultraviolet continua. Astronomy and Astrophysics.  ISSN 0004-6361.  626
  • Souvik Bose; Vasco Manuel de Jorge Henriques; Jayant Joshi & Luc Rouppe van der Voort (2019). Characterization and formation of on-disk spicules in the Ca II K and Mg II k spectral lines. Astronomy and Astrophysics.  ISSN 0004-6361.  631
  • Clara Froment; Patrick Antolin; Vasco Manuel de Jorge Henriques; Petra Kohutova & Luc Rouppe van der Voort (2019). Multi-scale observations of thermal non-equilibrium cycles in coronal loops. Astronomy and Astrophysics.  ISSN 0004-6361.  633
  • Robert Rutten; Luc Rouppe van der Voort & Bart Walter De Pontieu (2019). Solar Hα features with hot onsets: IV. Network fibrils. Astronomy and Astrophysics.  ISSN 0004-6361.  632
  • D. Kuridze; Vasco Manuel de Jorge Henriques; M. Mathioudakis; Luc Rouppe van der Voort; Jaime de la Cruz Rodriguez & Mats Carlsson (2018). Spectropolarimetric Inversions of the Ca II 8542Å Line in an M-class Solar Flare. Astrophysical Journal (ApJ).  ISSN 0004-637X.  860
  • Souvik Bose & K Nagaraju (2018). On the Variability of the Solar Mean Magnetic Field: Contributions from Various Magnetic Features on the Surface of the Sun. Astrophysical Journal (ApJ).  ISSN 0004-637X.  862
  • A. Reid; Vasco Manuel de Jorge Henriques; M. Mathioudakis & T. Samanta (2018). Penumbral Waves Driving Solar Fan-shaped Chromospheric Jets. Astrophysical Journal Letters.  ISSN 2041-8205.  855, s 1- 6
  • Tiago Mendes Domingos Pereira; Luc Rouppe van der Voort; Viggo Hansteen & Bart Walter De Pontieu (2018). Chromospheric counterparts of solar transition region unresolved fine structure loops. Astronomy and Astrophysics.  ISSN 0004-6361.  611
  • Helle Bakke; Lars Frogner & Boris Vilhelm Gudiksen (2018). Non-thermal electrons from solar nanoflares In a 3D radiative MHD simulation. Astronomy and Astrophysics.  ISSN 0004-6361.  620
  • Peter R. Young; Hui Tian; Hardi Peter; Robert Rutten; Chris J. Nelson; Zhenghua Huang; Brigitte Schmieder; Gregal Joan Maria Vissers; Shin Toriumi; Luc Rouppe van der Voort; Maria S. Madjarska; Sanja Danilovic; Arkadiusz Berlicki; Lakshmi Pradeep Chitta; Mark C.M. Cheung; Chad Madsen; Kevin P. Reardon; Yukio Katsukawa & Petr Heinzel (2018). Solar Ultraviolet Bursts. Space Science Reviews.  ISSN 0038-6308.  214:120
  • Robert Rutten & Van Der Voort Luc Rouppe (2017). Solar Hα features with hot onsets: II. A contrail fibril. Astronomy and Astrophysics.  ISSN 0004-6361.  597
  • Viggo Hansteen; Vasilis Archontis; Tiago Mendes Domingos Pereira; Mats Carlsson; Luc Rouppe van der Voort & Jorrit Leenaarts (2017). Bombs and Flares at the Surface and Lower Atmosphere of the Sun. Astrophysical Journal (ApJ).  ISSN 0004-637X.  839
  • Ainar Drews & Luc Rouppe van der Voort (2017). Microjets in the penumbra of a sunspot. Astronomy and Astrophysics.  ISSN 0004-6361.  602
  • Juan Martinez-Sykora; Bart Walter De Pontieu; Viggo Hansteen; Luc Rouppe van der Voort; Mats Carlsson & Tiago Mendes Domingos Pereira (2017). On the generation of solar spicules and Alfvenic waves. Science.  ISSN 0036-8075.  356, s 1269- 1272
  • Malcolm Druett; Eamon Scullion; Valentina Zharkova; Sarah Matthews; Sergei Zharkov & Luc Rouppe van der Voort (2017). Beam electrons as a source of Hα flare ribbons. Nature Communications.  ISSN 2041-1723.  8
  • D. Kuridze; Vasco Manuel de Jorge Henriques; M. Mathioudakis; J. Koza; T. V. Zaqarashvili; J Rybak; A. Hanslmeier & F. P. Keenan (2017). Spectroscopic Inversions of the Ca II 8542 Å Line in a C-class Solar Flare. Astrophysical Journal (ApJ).  ISSN 0004-637X.  846
  • Vasco Manuel de Jorge Henriques; M. Mathioudakis; H. Socas-Navarro & Jaime de la Cruz Rodriguez (2017). A Hot Downflowing Model Atmosphere for Umbral Flashes and the Physical Properties of Their Dark Fibrils. Astrophysical Journal (ApJ).  ISSN 0004-637X.  845
  • A. Reid; Vasco Manuel de Jorge Henriques; M. Mathioudakis; J. G. Doyle & T. Ray (2017). Chromospheric Inversions of a Micro-flaring Region. Astrophysical Journal (ApJ).  ISSN 0004-637X.  845
  • C. J. Nelson; Vasco Manuel de Jorge Henriques; M. Mathioudakis & F. P. Keenan (2017). The formation of small-scale umbral brightenings in sunspot atmospheres. Astronomy and Astrophysics.  ISSN 0004-6361.  605
  • K. Mooroogen; R. J. Morton & Vasco Manuel de Jorge Henriques (2017). Dynamics of internetwork chromospheric fibrils: Basic properties and magnetohydrodynamic kink waves. Astronomy and Astrophysics.  ISSN 0004-6361.  607
  • Luc Rouppe van der Voort; Bart Walter De Pontieu; G. B. Scharmer; Jaime de la Cruz Rodriguez; Juan Martinez-Sykora; Daniel Nobrega-Siverio; L. J. Guo; Shahin Jafarzadeh; Tiago Mendes Domingos Pereira; Viggo Hansteen; Mats Carlsson & Gregal Joan Maria Vissers (2017). Intermittent Reconnection and Plasmoids in UV Bursts in the Low Solar Atmosphere. Astrophysical Journal Letters.  ISSN 2041-8205.  851
  • Daniel Nobrega-Siverio; Juan Martinez-Sykora; F. Moreno-Insertis & Luc Rouppe van der Voort (2017). Surges and Si IV Bursts in the Solar Atmosphere: Understanding IRIS and SST Observations through RMHD Experiments. Astrophysical Journal (ApJ).  ISSN 0004-637X.  850
  • Håkon Skogsrud; Van Der Voort Luc Rouppe & Bart Walter De Pontieu (2016). On the active region bright grains observed in the transition region imaging channels of IRIS. Astrophysical Journal (ApJ).  ISSN 0004-637X.  817:124
  • Carolina Robustini; Jorrit Leenaarts; Jaime de la Cruz Rodriguez & Van Der Voort Luc Rouppe (2016). Fan-shaped jets above the light bridge of a sunspot driven by reconnection. Astronomy and Astrophysics.  ISSN 0004-6361.  590
  • Tiago Mendes Domingos Pereira; Van Der Voort Luc Rouppe & Mats Carlsson (2016). The Appearance of Spicules in High Resolution Observations of Ca II H and Hα. Astrophysical Journal (ApJ).  ISSN 0004-637X.  824
  • Van Der Voort Luc Rouppe; Robert Rutten & Gregal Joan Maria Vissers (2016). Reconnection brightenings in the quiet solar photosphere. Astronomy and Astrophysics.  ISSN 0004-6361.  592
  • Ada Ortiz; Viggo Hansteen; L. R. Bellot Rubio; Jaime de la Cruz Rodriguez; Bart Walter De Pontieu; Mats Carlsson & Van Der Voort Luc Rouppe (2016). Emergence of Granular-Sized Magnetic Bubbles through the Solar Atmosphere. III. The Path to the Transition Region. Astrophysical Journal (ApJ).  ISSN 0004-637X.  825
  • Sven Wedemeyer; T. Bastian; R. Brajsa; H. Hudson; G. Fleishman; M. Loukitcheva; B. Fleck; Eduard P. Kontar; Bart Walter De Pontieu; P. Yagoubov; S. K. Tiwari; R. Soler; J. H. Black; Patrick Antolin; Eamon Scullion; S. Gunar; N. Labrosse; H.-G. Ludwig; A. O. Benz; S. M. White; P. Hauschildt; J. G. Doyle; V. M. Nakariakov; T. Ayres; P. Heinzel; M. Karlicky; Tom Van Doorsselaere; D. Gary; C. E. Alissandrakis; A. Nindos; S. K. Solanki; Van Der Voort Luc Rouppe; M. Shimojo; Yoshiaki Kato; T. Zaqarashvili; E. Perez; C. L. Selhorst & M. Barta (2016). Solar Science with the Atacama Large Millimeter/Submillimeter Array—A New View of Our Sun. Space Science Reviews.  ISSN 0038-6308.  200, s 1- 73

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  • Clara Froment; Patrick Antolin; V. M. J. Henriques & Luc Rouppe van der Voort (2018). Multi-scale observations of thermal nonequilibrium cycles in coronal loops.
  • Clara Froment; Patrick Antolin; V. M. J. Henriques & Luc Rouppe van der Voort (2018). Multi-scale observations of thermal nonequilibrium cycles in coronal loops.
  • Luc Rouppe van der Voort (2018). Alignment between IRIS and ground-based data.
  • Luc Rouppe van der Voort (2018). Spicules with SST.

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Published May 23, 2019 2:21 PM - Last modified Aug. 4, 2020 3:54 PM