Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pazh...10..483s&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 10, July 1984, p. 483-493) Soviet Astronomy Letters (ISSN 0360-0327), vol. 10, July-Aug
Astronomy and Astrophysics
Astronomy
8
Astronomical Spectroscopy, Galactic Clusters, Heavy Elements, Supernova Remnants, Hydrogen Ions, Hyperfine Structure, Iron, Line Spectra, Millimeter Waves, Submillimeter Waves
Scientific paper
Hyperfine sublevel transitions are calculated for hydrogenlike and lithiumlike ions of isotopes of N, Na, Mg, Al, Mn, and numerous other elements, including Si and Fe. The degree of ionization due to various effects in hot gas in SNRs and galaxy clusters is calculated, and mechanisms for exciting hyperfine sublevels are discussed, emphasizing resonance scattering of an electron by the hydrogenlike ion. Millimeter line emission from the transitions are considered, and astrophysical applications of the lines are discussed, including SNR emission in the 5.64 mm nitrogen line, atmospheric transparency in the 5.64 mm line, unstable isotopes in SNRs, and intracluster gas emission in the 3.06 mm iron line.
Churazov Evgenii M.
Syunyaev Rashid A.
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