The Cerenkov radiation in atom-atomic ion clouds and line-spectra of QSOs

Details The Cerenkov radiation in atom-atomic ion clouds and line-spectra of QSOs The Cerenkov radiation in atom-atomic ion clouds and line-spectra of QSOs

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986sssmp..29..631f&link_type=abstract

Scientia Sinica, Series A - Mathematical, Physical, Astronomical and Technical Sciences (ISSN 0253-5831), vol. 29, June 1986, p.

Astronomy and Astrophysics

Astronomy

Cerenkov Radiation, Line Spectra, Lyman Alpha Radiation, Quasars, Interstellar Matter, Ions, Nitrogen, Red Shift

Scientific paper

The effect of the 1240-A N V line on the 1216-A Ly-alpha line in the spectra of Cerenkov radiation from clouds of atoms and atomic ions is investigated theoretically, and the results are applied to the observed spectra of QSOs. The QSO (Ly-alpha)/(N V) intensity ratio predicted by the Cerenkov model of You and Cheng (1980) is shown to be consistent with observational data for UM 663 but significantly greater than that predicted by photoionization models such as that of MacAlpine (Cariotti et al., 1979).

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