Narrow Components within the Fe Kalpha Profile of NGC 3516: Evidence for the Importance of General Relativistic Effects?
| Authors:
|
Turner, T.J.1,2,
Mushotzky, R.F.2,
Yaqoob, T.3,
George, I.M.1,2,
Snowden, S.L.2,4,
Netzer, H.5,
Kraemer, S.6,
Nandra, K.2,4,
Chelouche, D.5
|
| Affiltns:
|
1 JCA, UMBC,
2 LHEA,
NASA/GSFC,
3 Jonhs Hopkins Univ,
4USRA,
5Tel Aviv Univ,
6 Catholic University of America,
|
| Journal:
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ApJ, 574, L123
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| Publn Date:
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2002 Aug 01
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Summary
We present results from a simultaneous Chandra HETG and XMM-Newton
observation of NGC 3516. We find evidence for several
narrow components of Fe Kalpha along with a broad line.
We consider the possibility that the lines arise in an
blob of material ejected from
the nucleus with velocity ~0.25c.
We also consider an origin in a neutral accretion disk,
suffering enhanced illumination at 35 and 175
gravitational radii, perhaps due to magnetic reconnection.
The presence of these narrow features indicates there is no
Comptonizing region
along the line-of-sight to the nucleus.
This in turn is compelling support for the hypothesis
that broad Fe Kalpha components are, in
general, produced by strong gravity.
Figures:
Fig1
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Fig3
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