A softer look at MCG--6-30-15 with XMM-Newton

Details A softer look at MCG--6-30-15 with XMM-Newton A softer look at MCG--6-30-15 with XMM-Newton

2003-03-18

arxiv.org/abs/astro-ph/0303418v2

Mon.Not.Roy.Astron.Soc.346:833,2003

Astronomy and Astrophysics

Astrophysics

8 pages, 10 figures, submitted to MNRAS

Scientific paper

10.1111/j.1365-2966.2003.07127.x

We present analysis and results from the Reflection Grating Spectrometer during the 320 ks XMM observation of the Seyfert 1 galaxy MCG-6-30-15. The spectrum is marked by a sharp drop in flux at 0.7 keV which has been interpreted by Branduardi-Raymont et al. as the blue wing of a relativistic OVIII emission line and by Lee at al. as a dusty warm absorber. We find that the drop is well explained by the FeI L2,3 absorption edges and obtain reasonable fits over the 0.32-1.7 keV band using a multizone, dusty warm absorber model. Some residuals remain which could be due to emission from a relativistic disc, but at a much weaker level than from any model relying on relativistic emission lines alone. A model based on such emission lines can be made to fit if sufficient (warm) absorption is added, although the line strengths exceed those expected. The EPIC pn difference spectrum between the highest and lowest flux states of the source indicates that this is a power-law in the 3-10 keV band which, if extrapolated to lower energies, reveals the absorption function acting on the intrinsic spectrum, provided that any emission lines do not scale exactly with the continuum. We find that this function matches our dusty warm absorber model well. The soft X-ray spectrum is therefore dominated by absorption structures, with the equivalent width of any individual emission lines in the residuals being below about 30 eV. (abridged)

Affiliated with

Also associated with

No associations

Rating

A softer look at MCG--6-30-15 with XMM-Newton does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A softer look at MCG--6-30-15 with XMM-Newton, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A softer look at MCG--6-30-15 with XMM-Newton will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-119178