One-dimensional spectra (black) for the two quasars of the pair, QSO1 (top) and QSO2 (bottom), as extracted from the final MUSE data, using a circular aperture with radius 2′′. The red spectra indicate the error vectors. The vertical dashed blue (magenta) lines indicate the position of important line emissions at the systemic redshift of QSO1 (QSO2). For both objects, we show in the inset plots a zoomed version of the spectrum at the location of the Lyα and C IV lines to highlight the presence of interesting absorptions. The vertical dashed gray and green lines indicate the location of an H Lyα absorptions present within both QSO1 and QSO2 spectra, and C IV absorption along the QSO2 sight-line. The fit to these lines is shown in Sect. 4.2 and Figs. 6 and 7. Residuals due to frequent sky lines are evident at wavelengths >7000 Å.
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