Physics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop...11f&link_type=abstract
XMM-Newton Proposal ID #03003204
Physics
Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Sdss J1513+0019, Sdss J2330+0000, Sdss J1649+6424, Sdss J1042-0018, Xmm-Newton Proposal 03003204
Scientific paper
We propose the observation with XMM-Newton of a sample of 14 optically selected Narrow-Line Seyfert 1 galaxies (NLS1) discovered in the Sloan Digital Sky Survey (SDSS) and never observed in X-rays. The key aim of this project is the detailed characterization of the X-ray spectral properties of optically selected NLS1. Moreover, since most NLS1 known to date are X-ray selected, this study will also assess if their 0.5-10 keV spectral properties change with the selection method.
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