The reprocessing features in the X-ray spectrum of the NELG MCG-5-23-16

Details The reprocessing features in the X-ray spectrum of the NELG MCG-5-23-16 The reprocessing features in the X-ray spectrum of the NELG MCG-5-23-16

2003-11-13

arxiv.org/abs/astro-ph/0311316v1

Astron.Astrophys. 415 (2004) 437-442

Astronomy and Astrophysics

Astrophysics

Accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20030211

We present results from the spectral analysis of the Seyfert 1.9 galaxy MCG-5-23-16, based on ASCA, BeppoSAX, Chandra and XMM-Newton observations. The spectrum of this object shows a complex iron Kalpha emission line, which is best modeled by a superposition of a narrow and a broad (possibly relativistic) iron line, together with a Compton reflection component. Comparing results from all (six) available observations, we do not find any significant variation in the flux of both line components. The moderate flux continuum variability (about 25% difference between the brightest and faintest states), however, does not permit us to infer much about the location of the line-emitting material. The amount of Compton reflection is lower than expected from the total iron line EW, implying either an iron overabundance or that one of the two line components (most likely the narrow one) originates in Compton-thin matter.

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