The narrow-line quasar NAB 0205+024 observed with XMM-Newton

Abstract

The XMM-Newton observation of the narrow-line quasar NAB 0205+024 reveals three striking differences since it was last observed in the X-rays with ASCA. Firstly, the 2-10 keV power-law is notably steeper. Secondly, a hard X-ray flare is detected, very similar to that seen in I Zw 1. Thirdly, a strong and broad emission feature is detected with the bulk of its emission redward of 6.4 keV, and extending down to ~5 keV in the rest frame. The most likely explanation for the broad feature is neutral iron emission emitted from a narrow annulus of an accretion disc close to the black hole. The hard X-ray flare could be the mechanism which illuminates this region of the disc, allowing for the emission line to be detected. The combination of effects can be understood in terms of the `thundercloud' model proposed by Merloni & Fabian.

7 pages. Accepted for publication in MNRAS

References in corpus (5)

• A Complete Sample of Soft X-ray Selected AGN: II. Statistical Analysis
• Fe XXV and Fe XXVI Diagnostics of the Black Hole and Accretion Disk in Active Galaxies: Chandra Time-Resolved Spectroscopy of NGC 7314
• Relativistic spectral features from X-ray illuminated spots and the measure of the black hole mass in AGN
• Optical Variability of Narrow-Line Seyfert 1 Galaxies
• The history of the iron K-alpha line profile in the Piccinotti AGN ESO198-G24

Cited by in corpus (5)

• An Explanation for the soft X-ray excess in AGN
• Variability Selected Low-Luminosity Active Galactic Nuclei in the 4 Ms Chandra Deep Field-South
• A longer XMM-Newton look at I Zwicky 1: Variability of the X-ray continuum, absorption, and iron Kalpha line
• The relativistic shift of narrow spectral features from black-hole accretion discs
• The XMM-Newton view of the relativistic spectral features in AXJ0447-0627