NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-25 T14:40:08 PDT
Help | Comment | NED Home

For refcode 2016ApJS..225...14K:
Retrieve 49 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2016ApJS..225...14K Suzaku Observations of Moderately Obscured (Compton-thin) Active Galactic Nuclei Selected by Swift/BAT Hard X-ray Survey Kawamuro, Taiki; Ueda, Yoshihiro; Tazaki, Fumie; Ricci, Claudio; Terashima, Yuichi Abstract. We report the results obtained by a systematic, broadband (0.5-150 keV) X-ray spectral analysis of moderately obscured (Compton-thin, 22<=slant {log}{N}_{{H_}}\lt 24) active galactic nuclei (AGNs) observed with Suzaku and Swift/Burst Alert Telescope (BAT). Our sample consists of 45 local AGNs at z\lt 0.1 with {log}{L}_14-195{keV_}\gt 42 detected in the Swift/BAT 70-month survey, whose Suzaku archival data are available as of 2015 December. All spectra are uniformly fit with a baseline model composed of an absorbed cutoff power-law component, reflected emission accompanied by a narrow fluorescent iron-Kalpha line from cold matter (torus), and scattered emission. The main results based on the above analysis are as follows. (1) The photon index is correlated with Eddington ratio, but not with luminosity or black hole mass. (2) The ratio of the luminosity of the iron-Kalpha line to the X-ray luminosity an indicator of the covering fraction of the torus, shows significant anticorrelation with luminosity. (3) The averaged reflection strength derived from stacked spectra above 14 keV is larger in less luminous ({log}{L}_10-50{keV_}<=slant 43.3, R={1.04}_-0.19_^+0.17^) or highly obscured ({log}{N}_{{H_}}\gt 23, R={1.03}_-0.17_^+0.15^) AGNs than in more luminous ({log}{L}_10-50{keV_}\gt 43.3, R={0.46}_-0.09_^+0.08^) or lightly obscured ({log}{N}_{{H_}}<=slant 23, R={0.59}_-0.10_^+0.09^) objects. (4) The ratio of the luminosity of the [{{O}} {{IV}}] 25.89 micron line to the X-ray luminosity is significantly smaller in AGNs with lower soft X-ray scattering fractions, suggesting that the former luminosity underestimates the intrinsic power of an AGN buried in a torus of small opening angle. Key words: galaxies: active, galaxies: nuclei, X-rays: galaxies ========================================================================== 2017ApJS..230...29K ERRATUM: "Suzaku Observations of Moderately Obscured (Compton-Thin) Active Galactic Nuclei Selected by Swift/BAT Hard X-Ray Survey" (2016, ApJS, 225, 14) Kawamuro, Taiki; Ueda, Yoshihiro; Tazaki, Fumie; Ricci, Claudio; Terashima, Yuichi Abstract. {see text} ==========================================================================
Retrieve 49 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home