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Physics Centre for Fusion, Space and Astrophysics

D.1c Northumbria Wave Tracking code

The following software packages written in IDL contain tools to analyse transverse motions of magnetized structures. We have developed the Northumbria Wave Tracking code (NuWT) to analyse individual waves along structures exploiting non-linear least-squares fitting – useful for accurate measurements for precise parameters estimation, e.g., for magneto-seismology. An automated version of this code (autoNuWT) is also available, but is focused on large-scale studies of transverse motions. This exploits FFTs to rapidly characterize amplitudes, periods and time-scales of large-scale wave fields.

  • Tool name: NUWT
  • Developers: Richard Morton, James McLaughlin, Krishna Mooroogen, Micah Weberg (Northumbria)
  • Main Contact: Richard Morton, richard.morton@nortumbria.ac.uk
  • Basic description: Finds and measures kink wave motions in a series of time-distance diagrams. Requires user input to perform model fit to time-series. Useful for single event study and applications to magneto-seismology.
  • Language: IDL ¥ Resource needed to use: Desktop
  • Host location: https://github.com/Richardjmorton/NUWT
  • Current status: Complete
  • 6-month plan to availability: N/A
  • Status of documentation: Complete.
  • Test status: Tested with data from SDO, Hinode, ROSA, SST
  • How to reference tool in publication: Morton, Astron. Astrophys. 556 90 (2014) Morton et al. ApJ 784 29 (2014)
  • Tool name: autoNUWT (temporary name)
  • Developers: Richard Morton, James McLaughlin, Micah Weberg (Northumbria)
  • Main Contact: Richard Morton, richard.morton@nortumbria.ac.uk
  • Basic description: Finds and measures kink wave motions in a series of time-distance diagrams. No user input required, utilizes FFT to analyse waves. Useful for large-scale statistical analysis.
  • Language: IDL
  • Resource needed to use: Desktop
  • Host location: available once testing finalised and documentation written
  • Current status: testing underway
  • 6-month plan to availability: Develop documentation and test data sets. Continue testing with synthetic scenarios.
  • Status of documentation: Non-existent. But will begin preparation soon.
  • Test status: Stress testing underway. Has been applied to SDO, ROSA and SST data with comparable results to previous ‘by-hand’ studies.
  • How to reference tool in publication: Relevant publications to cite will be listed in documentation