quasars:emission相关论文
X-ray changing-look active galactic nuclei(CL AGNs) are a subpopulation of AGNs,whose lineof-sight column densities incr......
Synchrotron peak luminosity,black hole mass and Eddington ratio for SDSS flat-spectrum radio quasars
【Abstract】For a sample of 185 flat-spectrum radio quasars(FSRQs) constructed from the SDSS DR3 quasar catalog,we found......
A broad absorption line outflow associated with the broad emission line region in the quasar SDSS J0
We report on the discovery of unusual broad absorption lines(BALs)in the bright quasar SDSS J075133.35+134548.3 at z~1,u......