Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-08-01
Astrophys.J.598:916-921,2003
Astronomy and Astrophysics
Astrophysics
10 pages, 2 color figures. Accepted for publication in ApJ Aug 11 2003. Added a reference and some new text in section 3.2, co
Scientific paper
10.1086/379100
We present results from a 20 ksec XMM observation of Mrk 231. EPIC data reveal strong line emission due to Fe Ka, which has rarely been detected in this class. The line energy is consistent with an origin in neutral Fe and the width equivalent to a velocity dispersion ~ 18,000 km/s, thus the line may be attributed to transmission and/or reflection from a distribution of emitting clouds. If, instead, the line originates in the accretion disk then the line strength and flat X-ray continuum support some contribution from reflection, although the data disfavor a model where the hard X-ray band is purely reflected X-rays from a disk. Line parameters are similar to those obtained for the BAL QSO, H1413+117.
Kraemer Steven B.
Turner Tracey Jane
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