Discovery of Five Narrow-Line Seyfert 1 Galaxies and Implications on the NLS1 Model

Details Discovery of Five Narrow-Line Seyfert 1 Galaxies and Implications on the NLS1 Model Discovery of Five Narrow-Line Seyfert 1 Galaxies and Implications on the NLS1 Model

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003chjaa...3..423w&link_type=abstract

Chinese Journal of Astronomy & Astrophysics, Vol. 3, No. 5, p. 423-430

Physics

1

Black Hole Physics, Galaxy: Active, Galaxy: Seyfert, X-Ray: Galaxy

Scientific paper

We report the discovery of five Narrow-Line Seyfert 1 galaxies (NLS1s) identified from the ROSAT All-Sky Survey bright sources. One of them has a quasar-like luminosity and two, including the quasar-like one, have close companions and/or show interacting features. We calculate the central black hole masses and Eddington ratios for the five NLS1s. In combination with the objects of Kaspi et al., we find that NLS1s have smaller central black hole masses and higher accretion rate than normal Seyfert 1s.

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