Open AccessInvestigating ionized disc models of the variable narrow‐line Seyfert 1 PG 1404+226
Author(s) -
Crummy J.,
Fabian A. C.,
Brandt W. N.,
Boller Th.
Publication year - 2005
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2005.09258.x
Subject(s) - physics , astrophysics , quasar , galaxy , ionization , accretion disc , line (geometry) , astronomy , black hole (networking) , accretion (finance) , thermal , emission spectrum , spectral line , geometry , routing protocol , ion , computer network , mathematics , routing (electronic design automation) , quantum mechanics , meteorology , computer science , link state routing protocol
We investigate the use of relativistically blurred photoionized disc models on an XMM–Newton observation of the narrow‐line Seyfert 1 galaxy PG 1404+226. The model is designed to reproduce the radiation from the inner accretion disc around a Kerr black hole, and is more successful at fitting the spectrum than models based on a thermal soft excess. The source varies strongly over the course of the observation, and the disc model works over all observed flux states. We conclude that it is a useful tool in the study of certain quasars.