Suzaku observation of NGC 3516: complex absorption and the broad and narrow Fe K lines

Details Suzaku observation of NGC 3516: complex absorption and the broad and narrow Fe K lines Suzaku observation of NGC 3516: complex absorption and the broad and narrow Fe K lines

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327.1087m&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 10, p.1087

Astronomy and Astrophysics

Astronomy

3

Galaxies: Active, Galaxies: Individual (Ngc 3516), Galaxies: Seyfert, X-Rays: Galaxies

Scientific paper

We present preliminary results from a 150 ks Suzaku observation of the Seyfert 1 galaxy NGC 3516. Suzaku's wide bandpass has enabled us to deconvolve the broadband emitting and absorbing components in this object, breaking model degeneracies inherent in previous, smaller-bandpass spectra. The primary power-law continuum is absorbed by an ionized absorber as well as a partial-covering absorber; the column density of the ionized absorber has increased by a factor of ˜3 since XMM-Newton observations in 2001. We detect a soft power-law component which may be scattered emission. We confirm the presence of the broad Fe line, finding a 185+130-70 eV equivalent width line that indicates emission extending down to a few Schwarzschild radii. Models which exclude either the broad line or the partial-covering absorber are rejected. Suzaku's high effective area and low background near 6 keV also allow us to resolve the narrow Fe K emission line; we find a FWHM velocity width near 4000 km s-1, commensurate with Broad Line Region velocities.

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