Analysing the Suzaku Spectra of the Broad-Line Seyfert 1 Galaxy CBS 126

Abstract

We analysed new simultaneous \emph{Suzaku} and \emph{Swift} data of the Broad Line Seyfert 1 (BLS1) galaxy CBS 126. A clear Fe emission line and a strong soft excess are present in the source spectra. We fit the spectra with a relativistic reflection model and find the model tends to fit the data with a high iron abundance possibly due to the large soft excess present. By checking the difference and the RMS spectra, we find there is likely an absorption edge at $\sim$ 0.89 keV, which might be caused by oxygen or neon. We also produced an analysis of the time-resolved spectra in order to examine the existence of the edge. Although high iron abundance is required more in the time-resolved spectra, a model of solar iron abundance together with an absorption edge gives a more physical explanation. Variation of the ionisation parameter is an alternative, plausible explanation for the excess seen in the difference spectra. It is difficult to know if there are warm absorbers in this source from the current data. To further investigate the presence of possible warm absorbers, higher signal-to-noise low-energy data are needed. The work presented here tentatively suggests that the spectra of a BLS1 can be explained by a relativistic reflection model similar to that often seen in their narrow-line cousins.

10 pages, 12 figures, accepted for publication in MNRAS

References in corpus (9)

• A Catalog of Quasar Properties from SDSS DR7
• Intrinsic disc emission and the Soft X-ray Excess in AGN
• A Combined Optical and X-ray Study of Unobscured Type 1 AGN. I. Optical Spectra and SED Modeling
• The First Swift Ultra-Violet/Optical Telescope GRB Afterglow Catalog
• Understanding Reverberation Lags in 1H0707-495
• Energy-dependent variability and the origin of the soft X-ray excess in AGN
• Modelling the spectral response of the Swift-XRT CCD camera: Experience learnt from in-flight calibration
• The impact of accretion disk winds on the X-ray spectrum of AGN: Part 1 - XSCORT
• X-ray spectral variability in NGC 3783

Cited by in corpus (1)

• Strong UV and X-ray variability of the Narrow Line Seyfert 1 Galaxy WPVS 007 -- on the nature of the X-ray low state