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Testing Models of the Fast Solar Wind using Spectroscopic and In Situ Observations

  • Andrzej Fludra (a1) and Enrico Landi (a2)

Abstract

We present a new technique to study joint observations of EUV spectral line intensities and in situ charge states of the fast solar wind. We solve the time-dependent equation for ionization and recombination for a chosen element and calculate the charge state evolution along the open magnetic fields for elements such as C, O, Ne, Mg, Si and Fe. Comparing predicted spectral lines intensities above the limb and in situ charge states to observations from SOHO/SUMER and Ulysses/SWICS, we test how well the modelled thermodynamic parameters of the solar wind reproduce observations. We outline the application of this method to Solar Orbiter data.

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References

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Cranmer, S. R., van Ballegooijen, A. A. & Edgar, R. J., 2007, ApJS, 171, 520
Fludra, A., et al. 2013, Proceedings of the SPIE Optical Engineering conference: Solar Physics and Space Weather Instrumentation V, Vol. 8862, 88620F
Hansteen, V. H. & Leer, E., 1995, JGR, 100, 21577
Landi, E., et al. 2012a, ApJ, 750, 159
Landi, E., et al. 2012b, ApJ, 744, 100
Landi, E., et al. 2014, ApJ, 790, 111
Müller, D., et al. 2013, Sol. Phys., 285, 25
van der Holst, B., Sokolov, I. V., Meng, X., et al. 2014, ApJ, 782, 81
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Testing Models of the Fast Solar Wind using Spectroscopic and In Situ Observations

  • Andrzej Fludra (a1) and Enrico Landi (a2)

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