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 Kα 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 35Rg and 175Rg, 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 Kα components are, in general, produced by strong gravity.
Bibliographical noteFunding Information:
We are grateful to the Chandra, XMM, and RXTE satellite operation teams for the coordination of the multiwave band observations. We thank Craig Markwardt for production of the RXTE spectrum. T. J. Turner acknowledges support from NASA grant NAG5-7538. This research was supported by the Israel Science Foundation (grant 545/00).
- Galaxies: Seyfert
- Galaxies: active
- Galaxies: individual (NGC 3516)
- Galaxies: nuclei
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science