%0 Generic %1 fabian1995broad %A Fabian, A. C. %A Nandra, K. %A Reynolds, C. S. %A Brandt, W. N. %A Otani, C. %A Tanaka, Y. %A Inoue, H. %A Iwasawa, K. %D 1995 %K seyfert %T On broad iron K-alpha lines in Seyfert 1 galaxies %U http://arxiv.org/abs/astro-ph/9507061 %X The X-ray spectrum obtained by Tanaka et al from a long observation of the active galaxy MCG$-6-30-15$ shows a broad iron K$\alpha$ line skewed to low energies. The simplest interpretation of the shape of the line is that it is due to doppler and gravitational redshifts from the inner parts of a disk about a massive black hole. Similarly broad lines are evident in shorter observations of several other active galaxies. In this paper we investigate other line broadening and skewing mechanisms such as Comptonization in cold gas and doppler shifts from outflows. We have also fitted complex spectral models to the data of MCG$-6-30-15$ to see whether the broad skewed line can be mimicked well by other absorption or emission features. No satisfactory mechanism or spectral model is found, thus strengthening the relativistic disk line model.

@misc{fabian1995broad, abstract = {The X-ray spectrum obtained by Tanaka et al from a long observation of the active galaxy MCG$-6-30-15$ shows a broad iron K$\alpha$ line skewed to low energies. The simplest interpretation of the shape of the line is that it is due to doppler and gravitational redshifts from the inner parts of a disk about a massive black hole. Similarly broad lines are evident in shorter observations of several other active galaxies. In this paper we investigate other line broadening and skewing mechanisms such as Comptonization in cold gas and doppler shifts from outflows. We have also fitted complex spectral models to the data of MCG$-6-30-15$ to see whether the broad skewed line can be mimicked well by other absorption or emission features. No satisfactory mechanism or spectral model is found, thus strengthening the relativistic disk line model.}, added-at = {2014-02-27T21:02:49.000+0100}, author = {Fabian, A. C. and Nandra, K. and Reynolds, C. S. and Brandt, W. N. and Otani, C. and Tanaka, Y. and Inoue, H. and Iwasawa, K.}, biburl = {https://www.bibsonomy.org/bibtex/21cbb227021a2bc7a692e2656834c105b/microcuts}, description = {[astro-ph/9507061] On broad iron K-alpha lines in Seyfert 1 galaxies}, interhash = {f3fe5a13a8154444d8a882c3abf59d3e}, intrahash = {1cbb227021a2bc7a692e2656834c105b}, keywords = {seyfert}, note = {cite arxiv:astro-ph/9507061Comment: uuencoded compressed postscript. The preprint is also available at http://www.ast.cam.ac.uk/preprint/PrePrint.html}, timestamp = {2014-02-27T21:02:49.000+0100}, title = {On broad iron K-alpha lines in Seyfert 1 galaxies}, url = {http://arxiv.org/abs/astro-ph/9507061}, year = 1995 }