Chandra Grating Observations of Seyfert 1 Galaxies

Details Chandra Grating Observations of Seyfert 1 Galaxies Chandra Grating Observations of Seyfert 1 Galaxies

2001-11-21

arxiv.org/abs/astro-ph/0111428v1

Astronomy and Astrophysics

Astrophysics

In ``High Energy Universe at Sharp Focus: Chandra Science'', proceedings of a conference held in St. Paul, MN, 16-18 July 2001

Scientific paper

We present new results from a Chandra HETG observation of NGC 5548 and give a comparison of absorption and emission features found in other Seyfert 1 galaxies using Chandra grating observations. Deep soft X-ray edges are seen in Mkn 509 and NGC 3783, consistent with ASCA data. In NGC 5548 and NGC 4501 the edges are weak but consistent with the low column densities. We show that the detection of a narrow, probably non-disk, component of the iron line is very common. However, just as importantly, it is not detected in some cases. We show the effect of removing this narrow component from the ASCA Fe-K line profile in NGC 4151, revealing the underlying true shape of the relativistic Fe-K line component.

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