NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-17 T22:31:01 PDT
Help | Comment | NED Home

For refcode 2013MNRAS.430...60G:
Retrieve 20 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by Royal Astronomical Society. 2013MNRAS.430...60G The Suzaku view of highly ionized outflows in AGN - I. Statistical detection and global absorber properties Gofford, Jason; Reeves, James N.; Tombesi, Francesco; Braito, Valentina; Turner, T. Jane; Miller, Lance; Cappi, Massimo Abstract. We present the results of a new spectroscopic study of Fe K-band absorption in active galactic nuclei (AGN). Using data obtained from the Suzaku public archive we have performed a statistically driven blind search for Fe XXV Healpha and/or Fe XXVI Ly-{alpha} absorption lines in a large sample of 51 Type 1.0-1.9 AGN. Through extensive Monte Carlo simulations we find that statistically significant absorption is detected at E >~ 6.7 keV in 20/51 sources at the P_MC_ >= 95 per cent level, which corresponds to ~40 per cent of the total sample. In all cases, individual absorption lines are detected independently and simultaneously amongst the two (or three) available X-ray imaging spectrometer detectors, which confirms the robustness of the line detections. The most frequently observed outflow phenomenology consists of two discrete absorption troughs corresponding to Fe XXV Healpha and Fe XXVI Ly-{alpha} at a common velocity shift. From xstar fitting the mean column density and ionization parameter for the Fe K absorption components are log (N_H_/cm^-2^) ~ 23 and log (xi/erg cm s^-1^) ~ 4.5, respectively. Measured outflow velocities span a continuous range from <1500 km s^-1^ up to ~100 000 km s^-1^, with mean and median values of ~0.1 c and ~0.056 c, respectively. The results of this work are consistent with those recently obtained using XMM-Newton and independently provides strong evidence for the existence of very highly ionized circumnuclear material in a significant fraction of both radio-quiet and radio-loud AGN in the local universe. Key words: line: identification, galaxies: active, galaxies: nuclei, X-rays: galaxies
Retrieve 20 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home