Discovery of hidden blazars

F Ma1, B J Wills

  • 1Prc-Mrc 2nd Floor/R9950, McDonald Observatory and Astronomy Department, University of Texas, Austin, TX 78712, USA. feng@astro.as.utexas.edu

Science (New York, N.Y.)
|June 16, 2001
PubMed
Summary

Blazars may be detected by observing changes in emission line ratios, supporting a unified model for radio-loud quasars. This study found significant variations in quasar emission lines over a decade.

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