Modelling the Warm Absorber in NGC 3783 with the TITAN code

Details Modelling the Warm Absorber in NGC 3783 with the TITAN code Modelling the Warm Absorber in NGC 3783 with the TITAN code

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pmpa.conf...51g&link_type=abstract

2005: PAST MEETS PRESENT IN ASTRONOMY AND ASTROPHYSICS. Proceedings of the 15th Portuguese National Meeting. Held 28-30 July 200

Astronomy and Astrophysics

Astrophysics

Scientific paper

The "Warm Absorber" (WA) observed in Active Galactic Nuclei (AGN) displays zones of different density, temperature and ionization. Our approach to the study of the WA relies on the assumption of total pressure equilibrium, which results in the natural stratification of the medium and allows to explain the presence of lines from different ionization states in many AGN observed by XMM-Newton and Chandra. We have used the photoionization code TITAN, developed by our team, to calculate a grid of constant total pressure models dedicated to fit the WA in NGC 3783. Our study shows that the WA can be modelled in pressure equilibrium. Finally, this work provides a good example of the application of the TITAN code to the study of the WA in AGN, and opens perspectives for its use by a larger community, through a grid of constant total pressure models to be made available via XSPEC and/or via Virtual Observatory facilities.

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