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Correlation between the variations of quasar absorption lines and theionizing continuum have been recently confirmed in systematic studies. However,no convincing individual case is reported. We present a statistical analysis ofthe variable C iv broad absorption line (BAL) in the quasar SDSSJ141007.74+541203.3, which have been observed with 44 epochs by the SloanDigital Sky Survey Data Release 14. Grier et al. (2015) has recently concludedthat the most likely cause of the variability of the BAL in SDSSJ141007.74+541203.3 is a rapid response to changes in the incident ionizingcontinuum. In this paper, we confirm the anticorrelation between the equivalentwidth of BALs and the flux of the continuum based on the spectra of this quasarthat show significant variations, which serve as another independent evidencefor the view of Grier et al. (2015).

Correlation between the ionizing continuum and variable C iv broad absorption line in multi-epoch observations of SDSS J141007.74+541203.3