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D.1c Dynamics of thin chromospheric magnetic flux tubes in 3D

Solar interface-region bridges the cold (kinetic-pressure dominated) solar photosphere to the hot (magnetic-pressure dominated) corona, and is home to many complex (plasma and magnetic) physical processes. Thin magnetic flux tube (MFT) structures emanate from the intergranular lanes in the photosphere, as concentrations of magnetic fields, and are subject to continuous buffeting motions, emergence, interactions, and dissipation, over a very short period of time. DKIST will be a perfect facility to progress with the observations of MFTs, therefore a tool is needed to build up the 3D velocity map of these localized structures. We have already developed an algorithm to combine estimated POS and LOS motions at pixel- and tube-scale that are tested (Sharma et al., ApJ 2017 in press as of writing). Furthermore, we will improve this algorithm to locate/track shear motions around MFT structures to enable the statistical analysis of the associated properties, such as lifetimes, boundaries (area) and velocities of such small-scale motions using the approach developed by Graftieaux et al. (2001).

  • Tool name: DYCHO3D (Dynamic chromospheric flux tube analyser in 3D)
  • Developers: R. Sharma, J. Liu, Robertus ¥ Main Contact: Robertus (
  • Basic description: Construct full 3D velocity maps of MFTs
  • Language: Mainly Python
  • Resource needed to use: laptop, desktop
  • Host location: Sheffield
  • Current status: partially developed (50%)
  • 6-month plan to availability: complete underlying algorithm
  • Status of documentation: The concept and the testing of 1st part of algorithm published ¥ Test status: Tested on a dozen of data samples.
  • How to reference tool in publication: Cite associated scientific paper in ApJ by Shama et al. (2017a) 10.3847/1538-4357/aa6d57, Sharma et al. (2017b) and this award (SP2RC/Sheffield).