CIV and SiIV broad absorption line troughs in SDSS

We present a detailed investigation of the variability of 428 CIV and 235 SiIV broad absorption line (BAL) troughs identified in multi-epoch observations of 291 quasars by the...我们针对291颗类星体的多历元观测中识别出的428个C IV宽吸收线（Broad Absorption Line，BAL）槽与235个Si IV宽吸收线（Broad Absorption Line，BAL）槽的变异性开展了详尽研究。