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| Paper: |
Variable X-ray Absorption in the Mini-broad Absorption Line Quasar PG 1126-041 |
| Volume: |
460, AGN Winds in Charleston |
| Page: |
23 |
| Authors: |
Giustini, M.; Cappi, M.; Chartas, G.; Dadina, M.; Eracleous, M.; Ponti, G.; Proga, D.; Tombesi, F.; Vignali, C.; Palumbo, G. G. C. |
| Abstract: |
We present the results of a multi-epoch observational campaign
on the mini-broad absorption line quasar (mini-BAL QSO) PG 1126-041 performed
with XMM-Newton from 2004 to 2009. Time-resolved X-ray spectroscopy and
simultaneous UV and X-ray photometry were performed on the most complete set of
observations and on the deepest X-ray exposure of a mini-BAL QSO to date.
Complex X-ray spectral variability, found on time scales of both months and
hours, is best reproduced by means of variable and massive ionized absorbers along
the line of sight. In the highest signal-to-noise
observation, highly-ionized X-ray absorbing material outflowing much faster
(υout∼ 16500 km s-1) than the UV absorbing one
(υout∼ 5000 km s-1) is detected. This highly-ionized
absorber is found to be variable on very short time scales of a few hours. |
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