Cerenkov Line-like Radiation and the Origin of Broad Emission Lines in Quasars

Details Cerenkov Line-like Radiation and the Origin of Broad Emission Lines in Quasars Cerenkov Line-like Radiation and the Origin of Broad Emission Lines in Quasars

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010cha%26a..34..113l&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 34, Issue 2, p. 113-120.

Astronomy and Astrophysics

Astrophysics

Scientific paper

When the thermal relativistic electrons with isotropic distribution of velocities move through a dense gas region or impinge upon the surface of a cloud of dense gas, the Cerenkov effect will produce peculiar atomic or ionic emission lines, which we call the “Cerenkov line-like radiation”. This prediction has been verified by the laboratory experiments in optical waveband. In this paper, the importance of the Cerenkov line-like radiation in the exploration of broad emission lines in quasars and Syf1 s is pointed out. By using this mechanism, some long standing and significant puzzles in the study of quasars could be solved. Furthermore, the magnitude orders of energy losses of various effects of a relativistic electron in cosmic gas are estimated and compared with each other to prove the effectiveness of this new mechanism in quasars.

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