33 citations · 177 across the 11 of their papers we have counts for
11 papers
New Constraint of the Hubble Constant by Proper Motions of Radio Components Observed in AGN Twin-jets
Wei-Jian Lu, Yi-Ping Qin
As the advent of precision cosmology, the Hubble constant () inferred from the Lambda Cold Dark Matter fit to the Cosmic Microwave Background data is increasingly in tension w…
Velocity shift of Mg II and Al III broad absorption lines in quasar SDSS J134444.33+315007.6
Wei-Jian Lu, Ying-Ru Lin
We report, for the first time, a synchronized velocity shift of Mg II and Al III broad absorption lines (BALs) in quasar SDSS J134444.33+315007.6 (hereafter J1344+3150). We found t…
A Kinematic Shift of the C IV Broad Absorption Line in Quasar SDSS J120819.29+035559.4
Wei-Jian Lu, Ying-Ru Lin
We report the kinematic shift of the C IV broad absorption line (BAL) in quasar SDSS J120819.29+035559.4 (hereafter J1208+0355). This quasar shows two BAL systems, including a blue…
Correlations between the Variation of the Ionizing Continuum and Broad Absorption Lines in Individual Quasars
Wei-Jian Lu, Ying-Ru Lin
We discover the significant (significance level of >99%) correlations between the fractional variation of the ionizing continuum and that of the C IV and/or Si IV BALs in each of 2…
Narrow Absorption Lines Complex. III. Gradual Transition from Type S to Type N Broad Absorption Line
Wei-Jian Lu, Ying-Ru Lin
We study the relationship between the broad absorption lines (BALs) that can be decomposed into multiple narrow absorption lines and those that cannot (hereafter Type N and Type S…
Correlation between the ionizing continuum and variable C iv broad absorption line in multi-epoch observations of SDSS J141007.74+541203.3
Hong-Yan Huang, Cai-Juan Pan, Wei-Jian Lu +9
Correlation between the variations of quasar absorption lines and the ionizing continuum have been recently confirmed in systematic studies. However, no convincing individual case…
Narrow Absorption Lines Complex. II. Probing the Line-locking Signatures within the Trough-like Broad Absorption Line
Wei-Jian Lu, Ying-Ru Lin
In this paper, we report the line-locking phenomenon of the blended narrow absorption lines (NALs) within trough-like broad absorption lines (BALs) in quasar SDSS J021740.96--08544…
Saturation Effect on Photoionization-driven Broad Absorption Line Variability
Wei-Jian Lu, Ying-Ru Lin
We study the saturation effect on broad absorption line (BAL) variability through a variation phenomenon, which shows significant variation in Si IV BAL but no, or only small, chan…
Narrow absorption lines complex I: one form of broad absorption line
Wei-Jian Lu, Ying-Ru Lin
We discover that some of the broad absorption lines (BALs) are actually a complex of narrow absorption lines (NALs). As a pilot study of this type of BAL, we show this discovery th…
Correlation between the variation of the ionizing continuum and broad absorption lines
Wei-Jian Lu, Ying-Ru Lin, Yi-Ping Qin
In this Letter, we present an analysis of the relation between the variability of broad absorption lines (BALs) and that of the continuum. Our sample is multi-epoch observations of…
Evidence for photoionization-driven variability in narrow absorption lines
Wei-Jian Lu, Ying-Ru Lin, Yi-Ping Qin +10
In this Letter, we report the discovery of a strong correlation between the variability of narrow absorption lines (NALs) and the ionizing continuum from a two-epoch spectra sample…