X-ray reverberation lags from the 1.5 Seyfert galaxy NGC 5273
X-ray reverberation lags from the 1.5 Seyfert galaxy NGC 5273
We present the results of X-ray spectral-timing analysis of a 90 ks XMM–Newton observation of the nearby, broad-line, early-type AGN NGC5273. The X-ray spectrum revealed the clear presence of a reflection component at high energies, with a clear signature of a narrow iron line at 6.4 keV, consistent with distant reflection. Applying a relativistic reflection model, we found only marginal evidence for a broader relativistic line component. However, cross-spectral analysis revealed that, between 4 and 6 × 10−4 Hz, the 5–8 keV band lagged the 2–3 keV band, implying reflection of the iron line from material close to the black hole. From the analysis of the lag-energy spectrum, we found a broad, but skewed line with a peak of ≈1000 s at 7.5 keV relative to the continuum, which we interpret as the iron line in the reverberation spectrum from an illuminated accretion disc. From the asymmetry in the shape of lag-energy spectrum, we also found that the source is consistent with having an inclination ≥45°.
Accretion, accretion discs
1135-1141
Vincentelli, F.M.
6059e516-6e7a-4d18-afa4-c5b68a3b207a
Mastroserio, G.
e8e6100d-5826-4b46-9b56-abcb4d3abdbe
Mchardy, I.
4f215137-9cc4-4a08-982e-772a0b24c17e
Ingram, A.
d2c440a7-ecf1-4cc0-8d1b-3abf0c31103d
Pahari, M.
37a1bc53-be32-4688-91a3-2469a4bf0e78
1 February 2020
Vincentelli, F.M.
6059e516-6e7a-4d18-afa4-c5b68a3b207a
Mastroserio, G.
e8e6100d-5826-4b46-9b56-abcb4d3abdbe
Mchardy, I.
4f215137-9cc4-4a08-982e-772a0b24c17e
Ingram, A.
d2c440a7-ecf1-4cc0-8d1b-3abf0c31103d
Pahari, M.
37a1bc53-be32-4688-91a3-2469a4bf0e78
Vincentelli, F.M., Mastroserio, G., Mchardy, I., Ingram, A. and Pahari, M.
(2020)
X-ray reverberation lags from the 1.5 Seyfert galaxy NGC 5273.
Monthly Notices of the Royal Astronomical Society, 492 (1), .
(doi:10.1093/mnras/stz3511).
Abstract
We present the results of X-ray spectral-timing analysis of a 90 ks XMM–Newton observation of the nearby, broad-line, early-type AGN NGC5273. The X-ray spectrum revealed the clear presence of a reflection component at high energies, with a clear signature of a narrow iron line at 6.4 keV, consistent with distant reflection. Applying a relativistic reflection model, we found only marginal evidence for a broader relativistic line component. However, cross-spectral analysis revealed that, between 4 and 6 × 10−4 Hz, the 5–8 keV band lagged the 2–3 keV band, implying reflection of the iron line from material close to the black hole. From the analysis of the lag-energy spectrum, we found a broad, but skewed line with a peak of ≈1000 s at 7.5 keV relative to the continuum, which we interpret as the iron line in the reverberation spectrum from an illuminated accretion disc. From the asymmetry in the shape of lag-energy spectrum, we also found that the source is consistent with having an inclination ≥45°.
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stz3511
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Accepted/In Press date: 10 December 2019
e-pub ahead of print date: 17 December 2019
Published date: 1 February 2020
Additional Information:
Funding Information:
FV would like to thank Michiel van der Klis for the useful discussion and comments on the timing analysis of this data set. IMcH and FV thank STFC for support under grant ST/M001326/1. MP acknowledges Royal Society-SERB Newton International Fellowship support funded jointly by the Royal Society, UK and the Science and Engineering Board of India (SERB) through Newton-Bhabha Fund.
Publisher Copyright:
© 2019 The Author(s).
Keywords:
Accretion, accretion discs
Identifiers
Local EPrints ID: 438164
URI: http://eprints.soton.ac.uk/id/eprint/438164
ISSN: 1365-2966
PURE UUID: c6a32133-30d2-416c-ad6d-271dfd69bf8c
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Date deposited: 03 Mar 2020 17:45
Last modified: 16 Mar 2024 06:57
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Contributors
Author:
F.M. Vincentelli
Author:
G. Mastroserio
Author:
I. Mchardy
Author:
A. Ingram
Author:
M. Pahari
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