Science goals

The F-CHROMA project aims to answer a number of top-level science questions including:

  1. What is the energy output of the flaring chromosphere?
  2. Can we develop a self-consistent quasi-3D model of the flare chromosphere that will reproduce the dominant chromospheric lines and continua?
  3. Is the standard ‘collisional thick-target’ model for flare energy transport correct, and are there viable alternatives?
  4. What are the observational signatures of an out-of-equilibrium chromospheric plasma including electron, and possibly proton, distributions?
  5. How does the temperature, density and ionization structure of the flare chromosphere respond to time-dependent energy input?
  6. What do our models tell us about the flares that are observed in other solar-type stars?

Our objectives linked to the above questions are to:

  1. Perform joint observations and analysis of space-based and ground-based observations of flares, delivering improved diagnostics for conditions in the flare chromosphere;
  2. Carry out detailed modeling of these diagnostics for a range of flare energy inputs
  3. Utilize forward modeling techniques to determine the physical properties of the solar chromosphere during solar flares;
  4. Use models and observations to optimize targeted flare observing sequences for present and future missions and observatories, hence maximizing their scientific return;
  5. Produce a catalogue of existing and future ground-based solar flare observations, linked to available space-based counterparts;
  6. Populate an archive of ground-based flare observations and make it available to the community;
  7. Produce a flare spectral model database and make it available to the community.

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