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X-ray broad line emission in Seyfert galaxies: Mrk 766 and NGC 4051 |
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| Authors: | KO Mason G Branduardi-Raymont PM Ogle MJ Page EM Puchnarewicz NJ Salvi |
| Institution: | aMullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey, RH5 6NT, UK bDepartment of Physics, University of California, Santa Barbara, CA 93106, USA |
| Abstract: | Long (>100 ks) observations of the bright Seyfert galaxies Mrk 766 and NGC 4051 have been obtained using XMM-Newton. The RGS 5–38 Å spectra reveal evidence of broad features. These can be modelled with relativistic emission lines coming from the immediate vicinity of a massive rotating black hole. Lines of OVIII, NVII and CVI are required to reproduce the spectrum of Mrk 766, whereas the spectrum of NGC 4051 can be modelled using a single, even broader OVIII line. Both Seyferts also exhibit broad iron line emission in the 2–8 keV range, and the data available thus far suggest that the strength of the low-energy emission lines and the strength of the iron line may be correlated. |
| Keywords: | X-ray broad line emissions Seyfert galaxies Mrk 766 and NGC 4051 |
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