Science with hot astrophysical plasmas

Kaastra, J.S. and Gu, L. and Mao, J. and Mehdipour, M. and Mernier, F. and de Plaa, J. and Raassen, A.J.J. and Urdampilleta, I. (2017) Science with hot astrophysical plasmas. Journal of Instrumentation, 12. ISSN 1748-0221 (

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We present some recent highlights and prospects for the study of hot astrophysical plasmas. Hot plasmas can be studied primarily through their X-ray emission and absorption. Most astrophysical objects, from solar system objects to the largest scale structures of the Universe, contain hot gas. In general we can distinguish collisionally ionised gas and photoionised gas. We introduce several examples of both classes and show where the frontiers of this research in astrophysics can be found. We put this also in the context of the current and future generation of X-ray spectroscopy satellites. The data coming from these missions challenge the models that we have for the calculation of the X-ray spectra.