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SUMMARY:Opportunities and challenges for spectral-timing models of AGN
DTSTART;VALUE=DATE-TIME:20230626T141500Z
DTEND;VALUE=DATE-TIME:20230626T143000Z
DTSTAMP;VALUE=DATE-TIME:20260306T091626Z
UID:indico-contribution-874@cern.ch
DESCRIPTION:Speakers: Andrew Young (University of Bristol)\nX-ray reverber
 ation mapping studies of AGN can\, in principle\, be used to measure the b
 lack hole mass and spin\, the accretion disc and corona geometries\, and t
 he ionisation state of the disc. We report on our efforts to fit the spect
 ra and time lags of a number of AGN\, but focus primarily on two sources\,
  1H 0707-495 and IRAS 13224-3809. We can explain the low- and high-frequen
 cy lags\, find that an extended corona is required\, estimate the black ho
 le masses\, and find there are different correlations between parameters i
 n each object as their coronae change. However\, this model is slow to eva
 luate\, the parameter space had to be limited (e.g.\, fixed spin\; simplif
 ied geometry)\, it was difficult to characterise the error bars and degene
 racies in the model\, and the data were fairly noisy. We will discuss how 
 new approaches to modelling and improved data will lead to a better unders
 tanding of the inner workings of AGN.\n\nhttps://indico.unina.it/event/61/
 contributions/874/
LOCATION:Centro Congressi Federico II Aula Magna
URL:https://indico.unina.it/event/61/contributions/874/
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