38 citations
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astro-ph2008★ 13 cited
Discovery of four gravitational lensing systems by clusters in the SDSS DR6
Zhong-Lue Wen, Jin-Lin Han, Xiang-Yang Xu +4
We report the discovery of 4 strong gravitational lensing systems by visual inspections of the Sloan Digital Sky Survey images of galaxy clusters in Data Release 6 (SDSS DR6). Two…
astro-ph2008★ 38 cited
The debeamed luminosity, sychrotron peak frequency and black hole mass of BL Lac objects
Zhongzu Wu, Minfeng Gu, D. R. Jiang
We estimate the intrinsic luminosities and synchrotron peak frequency using the derived Doppler factor for a sample of 170 BL Lac objects, of which the synchrotron peak frequency a…