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Soft X-ray emission lines from a relativistic accretion disk in MCG-6-30-15 and Mrk 766

Branduardi-Raymont, G; Sako, M; Kahn, SM; Brinkman, AC; Kaastra, JS; Page, MJ; (2001) Soft X-ray emission lines from a relativistic accretion disk in MCG-6-30-15 and Mrk 766. ASTRON ASTROPHYS , 365 (1) L140 - L145. Green open access

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Abstract

XMM-Newton Reflection Grating Spectrometer (RGS) spectra of the Narrow Line Seyfert 1 galaxies MCG -6-30-15 and Mrk 766 are physically and spectroscopically inconsistent with standard models comprising a power-law continuum absorbed by either cold or ionized matter. We propose that the remarkably similar features detected in both objects in the 5-35 Angstrom band are H-like oxygen, nitrogen, and carbon emission lines, gravitationally redshifted and broadened by relativistic effects in the vicinity of a Kerr black hole. We discuss the implications of our interpretation, and demonstrate that the derived parameters can be physically self-consistent.

Type: Article
Title: Soft X-ray emission lines from a relativistic accretion disk in MCG-6-30-15 and Mrk 766
Open access status: An open access version is available from UCL Discovery
Keywords: black hole physics, accretion, accretion disks, line : formation, galaxies : individual : MCG-6-30-15, galaxies : individual : Mrk 766, X-rays : galaxies, ACTIVE GALACTIC NUCLEI, BLACK-HOLE, GALAXIES
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/9261
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