Physics
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phla..138..165c&link_type=abstract
Physics Letters A, Volume 138, Issue 4-5, p. 165-167.
Physics
1
Scientific paper
This paper suggests that the small blueshift of high ionization emission lines with respect to low ionization or HI emission lines in quasars and AGNs can be explained by the Cerenkov line-emission theory. The high ionization emission lines are generated by collisional excitation, but low ionization and HI emission lines are mainly generated by the Cerenkov line emission mechanism. Therefore the latter have a small ``Cerenkov redshift'' added.
Cheng Fu-Hua
Yan Maodu
You Jae Ho
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