Principal component analysis of the X-ray variability in NGC 7469
Astrophysics
2007-05-23 v1
Abstract
We apply Principal Component Analysis (PCA) to study the variability of the X-ray continuum in the Seyfert 1 galaxy NGC 7469. The PCA technique is used to separate out linear components contributing to variability between multiple datasets; the technique is often used in analysis of optical spectra, but has rarely been applied to AGN X-ray spectroscopy. Running a PCA algorithm on 0.3-10 keV EPIC data from a 150 ks XMM-Newton observation of NGC 7469, we describe the spectral components extracted and evaluate the usefulness of the PCA technique for understanding the X-ray continuum in AGN.
Keywords
Cite
@article{arxiv.astro-ph/0510754,
title = {Principal component analysis of the X-ray variability in NGC 7469},
author = {A. J. Blustin and S. V. Fuerst and G. Branduardi-Raymont and M. J. Page and E. Behar and J. S. Kaastra},
journal= {arXiv preprint arXiv:astro-ph/0510754},
year = {2007}
}
Comments
2 pages, 3 figures, presented at The X-ray Universe 2005, to appear in the conference proceedings