NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-17 T13:59:16 PDT
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For refcode 2002ApJ...574L.123T:
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2002ApJ...574L.123T Narrow Components within the Fe K{alpha} Profile of NGC 3516: Evidence of the Importance of General Relativistic Effects? T. J. Turner, R. F. Mushotzky, T. Yaqoob, I. M. George, S. L. Snowden, H. Netzer, S. B. Kraemer, K. Nandra, and D. Chelouche Received 2002 May 16; accepted 2002 June 24; published 2002 July 8 ABSTRACT We present results from a simultaneous Chandra High Energy Transmission Grating and XMM-Newton observation of NGC 3516. We find evidence of several narrow components of Fe K{alpha} along with a broad line. We consider the possibility that the lines arise in a 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 35R_g_ and 175R_g_, perhaps as a result of 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 K{alpha} components are, in general, produced by strong gravity. Subject headings: galaxies: active - galaxies: individual (NGC 3516) - galaxies: nuclei - galaxies: Seyfert
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