Yayınlanmış 1 Ocak 2018
| Sürüm v1
Dergi makalesi
Açık
C IV broad absorption line disappearance in a large SDSS QSO sample
Yazarlar/Oluşturanlar
- 1. Univ Napoli Federico II, Dept Phys, Via Cinthia 9, I-80126 Naples, Italy
- 2. Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA
- 3. Univ Connecticut, Storrs, CT 06269 USA
Açıklama
Context. Broad absorption lines (BALs) in the spectra of quasi-stellar objects (QSOs) originate from outflowing winds along our line of sight; winds are thought to originate from the inner regions of the QSO accretion disk, close to the central supermassive black hole (SMBH). These winds likely play a role in galaxy evolution and are responsible for aiding the accretion mechanism onto the SMBH. Several works have shown that BAL equivalent widths can change on typical timescales from months to years; such variability is generally attributed to changes in the covering factor (due to rotation and/or changes in the wind structure) and/or in the ionization level of the gas.
Dosyalar
bib-6ca86550-42e1-4335-8eff-cd95a1e9cc50.txt
Dosyalar
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