Disc wind or disc line? The extraordinary Fe-K feature of Mrk 1513

Abstract

We discuss the origin of a very unusual spectral structure observed in the Fe-K band of the Seyfert galaxy Mrk 1513, a local ($z$=0.063) active galactic nucleus (AGN) that is efficiently accreting matter onto its central supermassive black hole ($L_{\mathrm{bol}}/L_{\mathrm{Edd}}\sim$0.5). We consider the highest quality X-ray observation of this source available to date, performed in 2003 by XMM-Newton. The hard X-ray spectrum is characterised by a remarkable spectral drop at $\sim$7 keV, which can be interpreted as either the onset of a broad absorption trough or the blue wing of a relativistic emission line. Overall, this complex feature is significant at >5$\sigma$, and it is qualitatively reminiscent of a P-Cygni profile. A serendipitous spectrum of lower quality taken by XMM-Newton in 2015 qualitatively confirms the presence of similar Fe-K structures. Although it is not possible to distinguish between the two physical scenarios on sheer statistical grounds with the current data, several considerations lend weight to the possibility that Mrk 1513 is actually hosting a persistent outflow at accretion-disc scales, thus adding to the handful of known AGN in which a wide-angle X-ray wind has been identified so far.

Accepted for pubblication in A&A, 7 pages, 6 figures

References in corpus (15)

• HI4PI: A full-sky HI survey based on EBHIS and GASS
• Modelling the behaviour of accretion flows in X-ray binaries
• An XMM-Newton survey of broad iron lines in Seyfert galaxies
• Massive molecular outflows and negative feedback in ULIRGs observed by Herschel-PACS
• Black hole feedback in the luminous quasar PDS 456
• Blowin' in the wind: both `negative' and `positive' feedback in an obscured high-z Quasar
• Ionized outflows from active galactic nuclei as the essential elements of feedback
• Evidence for a radiatively driven disc-wind in PDS 456?
• The origin of ultra-fast outflows in AGN: Monte-Carlo simulations of the wind in PDS 456
• Searching for Ultra-fast Outflows in AGN using Variability Spectra
• Broad-line Region of the Quasar PG 2130+099 from a Two-Year Reverberation Mapping Campaign with High Cadence
• The first broadband X-ray view of the narrow line Seyfert 1 Ton S180
• The X-ray Disk/Wind Degeneracy in AGN
• Supermassive Black Hole Winds in X-rays: SUBWAYS. II. HST UV spectroscopy of winds at intermediate redshifts
• Comparing Reflection and Absorption Models for the Soft X-ray Variability in the NLS1 AGN UGC 11763

Cited by in corpus (1)

• Investigating the nuclear properties of highly accreting active galactic nuclei with XMM-Newton