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Accretion/Jet Activity and Narrow [O III] Kinematics in Young Radio Galaxies
Qingwen Wu, Minfeng Gu, Andrew Humphrey
We estimate black hole masses and Eddington ratios for a sample of 81 young radio galaxies (42 CSS +39 GPS). We find that the average black hole (BH) mass of these young radio gala…
The anti-correlation between the hard X-ray photon index and the Eddington ratio in LLAGNs
Minfeng Gu, Xinwu Cao
We find a significant anti-correlation between the hard X-ray photon index and the Eddington ratio L_Bol/L_Edd for a sample of Low-Ionization Nuclear Emission-line Regions (LINERs)…
SDSS spectroscopy for blazars in the LAT bright AGN sample
Zhaoyu Chen, Minfeng Gu, Zhonghui Fan +1
We have collected all available spectra and photometric data from SDSS catalogue for bright AGNs complied from the first three months of the Fermi large area telescope all-sky surv…
M_BH - sigma relation in SDSS flat-spectrum radio quasars
Minfeng Gu, Zhaoyu Chen, Xinwu Cao
The relationship between the black hole mass and velocity dispersion indicated with [O III] line width is investigated for a sample of 87 flat-spectrum radio quasars (FSRQs) select…
Flat-Spectrum Radio Quasars from SDSS DR3 Quasar Catalogue
Zhaoyu Chen, Minfeng Gu, Xinwu Cao
We constructed a sample of 185 Flat Spectrum Radio Quasars (FSRQs) by cross-correlating the Shen et al.'s SDSS DR3 X-ray quasar sample with FIRST and GB6 radio catalogues. From the…
The bulk kinetic power of radio jets in active galactic nuclei
Minfeng Gu, Xinwu Cao, D. R. Jiang
Based on the Königl's inhomogeneous jet model, we estimate the jet parameters, such as bulk Lorentz factor , viewing angle and electron number density from radio…