dc.creator |
Cackett, E. M. |
|
dc.creator |
Zoghbi, A. |
|
dc.creator |
Reynolds, C. |
|
dc.creator |
Fabian, A. C. |
|
dc.creator |
Kara, E. |
|
dc.creator |
Uttley, P. |
|
dc.creator |
Wilkins, D. R. |
|
dc.date.accessioned |
2018-04-10T15:08:27Z |
|
dc.date.available |
2018-04-10T15:08:27Z |
|
dc.date.issued |
2014-01-13 |
|
dc.identifier.issn |
0035-8711 |
|
dc.identifier.uri |
http://library2.smu.ca/handle/01/27400 |
|
dc.description |
Publisher's Version/PDF |
|
dc.description.abstract |
The recent detection of X-ray reverberation lags, especially in the Fe Kα line region, around active galactic nuclei (AGN) has opened up the possibility of studying the time-resolved response (reflection) of hard X-rays from the accretion disc around supermassive black holes. Here, we use general relativistic transfer functions for reflection of X-rays from a point source located at some height above the black hole to study the time lags expected as a function of frequency and energy in the Fe Kα line region. We explore the models and the dependence of the lags on key parameters such as the height of the X-ray source, accretion disc inclination, black hole spin and black hole mass. We then compare these models with the observed frequency- and energy-dependence of the Fe Kα line lag in NGC 4151. Assuming the optical reverberation mapping mass of 4.6 × 10<sup>7</sup>M<sub>☉</sub>, we get a best fit to the lag profile across the Fe Kα line in the frequency range (1−2) × 10<sup>−5</sup> Hz for an X-ray source located at a height h = 7<sup>+2.9</sup> <sub>−2.6</sub>R<sub>G</sub> with a maximally spinning black hole and an inclination i < 30°. |
en_CA |
dc.description.provenance |
Submitted by Betty McEachern (betty.mceachern@smu.ca) on 2018-04-10T15:08:27Z
No. of bitstreams: 1
Wilkins_D_article_2014.pdf: 1492087 bytes, checksum: 20492c3df23a7f69ad0d39e6766e8b86 (MD5) |
en |
dc.description.provenance |
Made available in DSpace on 2018-04-10T15:08:27Z (GMT). No. of bitstreams: 1
Wilkins_D_article_2014.pdf: 1492087 bytes, checksum: 20492c3df23a7f69ad0d39e6766e8b86 (MD5)
Previous issue date: 2014-01-13 |
en |
dc.language.iso |
en |
en_CA |
dc.publisher |
Oxford University Press |
en_CA |
dc.relation.uri |
https://dx.doi.org/10.1093/mnras/stt2424 |
|
dc.rights |
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2014 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
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dc.subject.lcsh |
Accretion (Astrophysics) |
|
dc.subject.lcsh |
Active galactic nuclei |
|
dc.subject.lcsh |
Seyfert galaxies |
|
dc.subject.lcsh |
X-ray sources, Galactic |
|
dc.title |
Modelling the broad Fe K alpha reverberation in the AGN NGC 4151 |
en_CA |
dc.type |
Text |
en_CA |
dcterms.bibliographicCitation |
Monthly Notices of the Royal Astronomical Society 438(4), 2980-2994. (2014) |
en_CA |