Astronomy and Astrophysics – Astronomy
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.1104m&link_type=abstract
American Astronomical Society Meeting 206, #11.04; Bulletin of the American Astronomical Society, Vol. 37, p.446
Astronomy and Astrophysics
Astronomy
Scientific paper
We report early results of a systematic X-ray spectral variability study of bright Seyfert galaxies observed by the Rossi X-Ray Timing Explorer (RXTE). The RXTE public archive contains data for 42 Seyfert and Seyfert-like galaxies with suitable temporal coverage to perform variability studies covering short (days/weeks) to long (years) timescales. We have developed a data pipeline to automate the data reduction. The pipeline produces a series of spectra for each source divided temporally in such a way that each has at least 100,000 net photons to ensure a good spectral fit. Each spectrum is then fitted to a model that contains an absorbed power law continuum and reflection plus an iron line. The goal of this research is first to build a database of spectral parameters for a large sample of AGN, and then to seek correlations between parameters and trends specific to various classes of AGN (e.g. Seyfert type or radio-loudness). The results will shed light on the geometry of the nuclear region, providing tests for current reflection and unification models of AGN.
Mattson Barbara J.
Reynolds Chris S.
Weaver Kimberley A.
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