Browsing by Author "Uttley, P."

Browsing by Author "Uttley, P."

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    1H 0707−495 in 2011: an X-ray source within a gravitational radius of the event horizon 
    Gallo, Luigi C.; Fabian, A. C.; Zoghbi, A.; Wilkins, D. R.; Dwelly, T.; Uttley, P.; Schartel, N.; Miniutti, G.; Grupe, D.; Komossa, S. (Oxford University Press, 2012)
    The narrow-line Seyfert 1 Galaxy 1H 0707−495 went into a low state from 2010 December to 2011 February, discovered by a monitoring campaign using the X-Ray Telescope on the Swift satellite. We triggered a 100 ks XMM–Newton ...

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    Long XMM observation of the narrow-line Seyfert 1 galaxy IRAS 13224−3809: rapid variability, high spin and a soft lag 
    Gallo, Luigi C.; Fabian, A. C.; Kara, E.; Walton, D. J.; Wilkins, D. R.; Ross, R. R.; Lozanov, K.; Uttley, P.; Zoghbi, A.; Miniutti, G. (Oxford University Press, 2013-03-11)
    The narrow-line Seyfert 1 galaxy IRAS 13224−3809 has been observed with XMM–Newton for 500 ks. The source is rapidly variable on time-scales down to a few 100 s. The spectrum shows strong broad Fe − K and L emission ...

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    Modelling the broad Fe K alpha reverberation in the AGN NGC 4151 
    Cackett, E. M.; Zoghbi, A.; Reynolds, C.; Fabian, A. C.; Kara, E.; Uttley, P.; Wilkins, D. R. (Oxford University Press, 2014-01-13)
    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 ...