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Simulations on High-z Long Gamma-Ray Burst Rate
Shu-Fu Qin, En-Wei Liang, Rui-Jing Lu +2
Since the launch of Swift satellite, the detections of high-z (z>4) long gamma-ray bursts (LGRBs) have been rapidly growing, even approaching the very early Universe (the record ho…
GRB 070518: A Gamma-ray Burst with Optically Dim Luminosity
L. P. Xin, W. K. Zheng, J. Wang +6
We present our optical observations of {\em Swift} GRB 070518 afterglow obtained at the 0.8-m Tsinghua University-National Astronomical Observatory of China telescope (TNT) at Xing…
Swifts GRB GRB071010B : outlier of the and correlations
Yuji Urata, Kuiyun Huang, Myungshin Im +12
We present multi-band results for GRB071010B based on \Swift, \Suzaku, and ground-based optical observations. This burst is an ideal target to evaluate the robustness of the ${\rm…
The ROSAT Bright Source 1RXS J201607.0+251645: An Active Algol-type Binary
Hua-Li Li, Yuan-Gui Yang, Wei Su +2
1RXS J201607.0251645 is identified to be an eclipsing binary for the first time. We present the preliminary observations in V band with the 0.6-m telescope for three years and the…
Three Spectacular HII-buried-AGN Galaxies from SDSS
Yufeng Mao, Jing Wang, Jianyan Wei
We present our analysis of the three HII-buried-AGN: SDSS J091053+333008, SDSS J121837+091324, and SDSS J153002-020415, by studying their optical spectra extracted from SDSS. The l…
Extending the Eigenvector 1 Space to the Optical Variability of Quasars
Yufeng Mao, Jing Wang, Jianyan Wei
We introduce a new physical parameter, the optical variability amplitude, to the well-established Eigenvector 1 space of quasars and test a sample of long-term B-band light curves…