2004A&A...427..101P


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.26CET01:35:50

2004A&A...427..101P - Astronomy and Astrophysics, volume 427, 101-105 (2004/11-3)

XMM-Newton observation of the Seyfert 1.8 ESO 113-G010: Discovery of a highly redshifted iron line at 5.4keV.

PORQUET D., REEVES J.N., UTTLEY P. and TURNER T.J.

Abstract (from CDS):

We present a spectral analysis of the Seyfert 1.8 ESO 113-G010 observed with XMM-Newton for 4ks. The spectrum shows a soft excess below 0.7keV and more interestingly a narrow emission Gaussian line at 5.4 keV (in its rest-frame), most probably originating from a redshifted iron Kα line. No significant line at or above 6.4keV is found contrary to other objects showing redshifted lines, ruling out a strong blue-wing to the line profile. The line is detected at 99% confidence, from performing Monte Carlo simulations which fully account for the range of energies where a narrow iron line is likely to occur. The energy of the line could indicate emission from relativistic (0.17-0.23c) ejected matter moving away from the observer, as proposed for Mrk 766 by Turner et al. (2004ApJ...603...62T). Alternatively, the emission from a narrow annulus at the surface of the accretion disk is unlikely due to the very small inclination angle (i.e. less than 10°) required to explain the narrow, redshifted line in this intermediate Seyfert galaxy. However emission from a small, localized hot-spot on the disk, occurring within a fraction of a complete disk orbit, could also explain the redshifted line. This scenario would be directly testable in a longer observation, as one would see significant variations in the energy and intensity of the line within an orbital timescale.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: quasars: general - X-rays: general - line: formation - X-rays: individual: ESO 113-G010

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ESO 113-10 Sy1 01 05 16.8725940848 -58 26 15.265543353   14.63 14.6 13.35   ~ 51 0
2 RX J0136.9-3510 Sy1 01 36 54.4577149075 -35 09 52.330090067   18.80   17.80   ~ 44 0
3 ESO 198-24 Sy1 02 38 19.7165906722 -52 11 32.346023872   15.36 14.17 13.75   ~ 143 0
4 NGC 3516 Sy1 11 06 47.4596406816 +72 34 07.189563769   13.12 12.40     ~ 1435 0
5 NGC 4253 Sy1 12 18 26.5155239433 +29 48 46.518670434   14.34 13.57     ~ 948 1
6 ESO 445-50 Sy1 13 49 19.2607281800 -30 18 34.224136831   13.81 13.66 12.18   ~ 739 0
7 NGC 7314 Sy1 22 35 46.1969940596 -26 03 01.574026329   11.62 13.11 10.61 11.4 ~ 510 0

    Equat.    Gal    SGal    Ecl

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2021.01.26-01:35:50

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