X-ray Outflows in the Swift Burst Alert Detected Seyfert 1s

Abstract

Previous surveys of outflows in low-redshift active galactic nuclei (AGN) have relied on the analysis of sources selected primarily for their optical/X-ray brightness, and are therefore biased. Towards determining the outflow properties of local AGN, we detect warm absorption signatures of O VII and O VIII absorption edges in the available Suzaku/XMM-Newton CCD spectra of an unbiased sample of 44 Seyfert 1-1.5 sources selected in the very hard X-rays (14-195 keV) with the Swift Burst Alert Telescope. From our analysis, we find that O VII and O VIII absorption edges are present in 41% of the sample. This fraction is dependent on luminosity, with outflow detections in 60% of low luminosity and 30% of high luminosity sources. However, grating spectroscopy of the highest luminosity sources reveals that ~ 80% of these sources have ionized absorbers, but that the ionization states are higher/lower than produces the O VII and O VIII edges. This suggests that ionized absorption may be present in all local Seyfert 1s.

13 pages, 2 figures, accepted in ApJL

References in corpus (3)

• Swift BAT Survey of AGN
• X-ray properties of an Unbiased Hard X-ray Detected Sample of AGN
• Structure of the Accretion Flow in Broad-Line Radio Galaxies: The Case of 3C390.3

Cited by in corpus (4)

• Unification of X-ray winds in Seyfert galaxies: from ultra-fast outflows to warm absorbers
• The Swift BAT-detected Seyfert 1 Galaxies: X-ray Broadband Properties and Warm Absorbers
• A Census of Broad-Line Active Galactic Nuclei in Nearby Galaxies: Coeval Star Formation and Rapid Black Hole Growth
• Highly variable AGN from the XMM-Newton Slew Survey