Outflowing material in the zem = 4.92 BAL QSO SDSS~J160501.21-011220.0

We present the analysis of two BALs seen in the spectrum of the QSO SDSS J160501.21-011220.0. Our UVES spectrum shows two well detached BALs at z(abs)= 4.685 and 4.855. The system at z(abs)= 4.855 covers the background source completely suggesting that the gas is located outside the BLR. On the contrary the system at z(abs)= 4.685 has a covering factor of ~0.9. The observed H I absorption line together with the limits on C II and Si II absorptions suggest that 16

Keywords:

• Solar mass
• Accretion (meteorology)
• Physics
• Ionizing radiation
• Emission spectrum
• QSOS
• Astrophysics
• Spectral line
• Black hole
• Optical depth
• Astronomy

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