Mathematics – Logic
Scientific paper
Sep 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000pkas...15s..73c&link_type=abstract
Publications of the Korean Astronomical Society, 15S, 73
Mathematics
Logic
Scientific paper
X-ray astronomy deals with measurements of the electromagnetic radiation in the energy range of E 0.1- 100 keV. The wavelength of X-ray is comparable to the size of atoms, so that the photons in the X-ray range are usually produced and absorbed by the atomic processes. Since the launch of the first X-ray astronomy satellite "Uhuru" in 1970, technological advances in a launch capability and a detection capability make X-ray astronomy one of the most rapidly evolving fields of astronomical research. Particularly, a spectral resolving power E/Delta E has been increased by an order of 2 - 3 (in the energy range of 0,1 - 10 keV) during the past 30 years. In this paper, I briefly review a developing process of the resolving power and spectroscopic techniques. Then I describe important emission/absorption lines in X-ray astronomy, as well as diagnostics of gas property with line parameters.
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