Other
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..774..271k&link_type=abstract
X-RAY DIAGNOSTICS OF ASTROPHYSICAL PLASMAS: Theory, Experiment, and Observation. AIP Conference Proceedings, Volume 774, pp. 27
Other
6
X-Ray Sources (Astronomical), Charge Exchange, Solar Wind, Astrophysical Plasma, Comets, Planetary Atmospheres, Interstellar Matter, X-Ray Spectra, X-Ray, Solar Wind Plasma, Sources Of Solar Wind, Particle Emission, Solar Wind
Scientific paper
The charge-exchange mechanism of X-ray emissions induced by the solar wind ions from cometary and planetary atmospheres and interstellar gas is discussed. The X-ray photon spectra of individual ions, such as highly charged Oq+, Cq+, Nq+, Neq+ and other ions, are described in detail. Cascading spectra of X-ray and EUV emissions of heavy solar wind ions are calculated for different ion velocities and compared with the results of laboratory measurements. Relative intensities of different spectral lines of the charge-exchange X-ray/EUV emission are used for the remote diagnostic of the compositions and velocities of the solar wind plasma. Synthetic X-ray spectra, computed for the slow and fast solar winds, are applied for the analysis of observed cometary and planetary X-rays and predictions of X-ray spectra from interstellar gas. The contribution of charge-transfer emission to the X-ray diffuse background is discussed. Brightness maps of the charge-exchange source of X-ray in the heliosphere are constructed taking into account the anisotropy of the solar wind plasma and a realistic distribution of the H and He gas.
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