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| Paper: |
X-ray Evidence for Ultra-Fast Outflows in Local AGNs |
| Volume: |
460, AGN Winds in Charleston |
| Page: |
8 |
| Authors: |
Tombesi, F.; Cappi, M.; Sambruna, R. M.; Reeves, J. N.; Reynolds, C. S.; Braito, V.; Dadina, M. |
| Abstract: |
X-ray evidence for ultra-fast outflows (UFOs) has been recently
reported in a number of local AGNs through the detection of
blue-shifted Fe XXV/XXVI absorption lines. We present the results of a
comprehensive spectral analysis of a large sample of 42 local Seyferts
and 5 Broad-Line Radio Galaxies (BLRGs) observed with
XMM-Newton and Suzaku. We detect UFOs in ga 40% of
the sources. Their outflow velocities are in the range
∼ 0.03–0.3c, with a mean value of ∼ 0.14c. The ionization is
high, in the range logℰ ∼3–6rm erg s–1 cm, and also the
associated column densities are large, in the interval
∼ 1022–1024rm cm–2. Overall, these results point to
the presence of highly ionized and massive outflowing material in the
innermost regions of AGNs. Their variability and location on sub-pc
scales favor a direct association with accretion disk
winds/outflows. This also suggests that UFOs may potentially play a
significant role in the AGN cosmological feedback besides jets, and
their study can provide important clues on the connection between
accretion disks, winds, and jets. |
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