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Solar and Stellar X-Ray and UV Radiation

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Modelling the Upper Atmosphere of Gas-Giant Exoplanets Irradiated by Low-Mass Stars

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Abstract

In this chapter, I describe the high-energy emissions from the Sun, as well as other low-mass stars. I refer to the following photon wavebands: X-ray (0.517–12.4 nm), Extreme UltraViolet EUV (12.4–91.2 nm), Far UltraViolet FUV (90–200 nm).

This chapter is an enhanced version of a chapter from an original PhD thesis which is available Open Access from the respository https://spiral.imperial.ac.uk/ of Imperial College London. The original chapter was distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits any noncommercial use, duplication, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author and the source, provide a link to the Creative Commons license and indicate if you modified the licensed material. You do not have permission under this license to share adapted material derived from this book or parts of it. The Creative Commence license does not apply to this enhanced chapter, but only to the original chapter of the thesis.

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Notes

  1. 1.

    Note from the author Since publication of the work presented in this chapter in Chadney et al. (2015), many studies have made use of the description and parameterisation of stellar EUV flux that is developed here. Amoungst others, this work has aided studies of the Neptune-mass planet GJ 436b, which orbits an M star (Ehrenreich et al. 2015), the Super Earth HD 97658b, orbiting a K star (Bourrier et al. 2017), and the recently announced Earth-sized planets in the TRAPPIST-1 star system (Wheatley et al. 2017).

    May 2017.

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  1. Space Environment Physics, Department of Physics and Astronomy, University of Southampton, Southampton, UK

    Joshua Chadney

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Chadney, J. (2017). Solar and Stellar X-Ray and UV Radiation. In: Modelling the Upper Atmosphere of Gas-Giant Exoplanets Irradiated by Low-Mass Stars. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-63351-0_2

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