Mg II LINE VARIABILITY OF HIGH-LUMINOSITY QUASARS
نویسندگان
چکیده
منابع مشابه
Line and continuum variability of two intermediate - redshift , high - luminosity quasars
Context. It has been shown that the luminosity of active galactic nuclei and the size of their broad line region obey a simple relation of the type RBLR = aL, from faint Seyfert nuclei to bright quasars, allowing single-epoch determination of the central black hole mass MBH = bL∆Hβ from their luminosity L and width of Hβ emission line. Adopting this mass determination for cosmological studies r...
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El resumen será traducido al español por los editores. We have carried out a survey to search for hidden blazars in a sample of z∼2 radio-loud quasars. The idea is based on our prediction that we should be able to see large CIV line variability not associated with observed continuum variations or most other emission lines in every radio-loud quasar. Here we report the initial results including ...
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1 Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, Israel, Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA, United States, 3 Institute for Gravitation and the Cosmos, Pennsylvania State University, University Park, PA, United States, Department of Physics, Pennsylvania State Univer...
متن کاملRadio-Variability in Radio-Quiet Quasars and Low-Luminosity AGN
We report on two surveys of radio-weak AGN to look for radio variability. We find significant variability with an RMS of 10-20% on a timescale of months in radio-quiet and radio-intermediate quasars. This exceeds the variability of radio cores in radio-loud quasars (excluding blazars), which vary only on a few percent level. The variability in radio-quiet quasars confirms that the radio emissio...
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We present Reverberation Mapping results after monitoring a sample of 17 high-z, high-luminosity quasars for more than 10 years using photometric and spectroscopic capabilities. Continuum and line emission flux variability is observed in all quasars. Using cross-correlation analysis we successfully determine lags between the variations in the continuum and broad emission lines for several sourc...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2008
ISSN: 0004-6256,1538-3881
DOI: 10.1088/0004-6256/135/5/1849