The detection of Broad Iron K and L line emission in the Narrow-Line Seyfert 1 Galaxy 1H0707-495 using XMM-Newton

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dc.creatorFabian, A. C.
dc.creatorZoghbi, A.
dc.creatorRoss, R. R.
dc.creatorUttley, P.
dc.creatorGallo, L. C.
dc.creatorBrandt, W. N.
dc.creatorBlustin, A.
dc.creatorBoller, T.
dc.creatorCaballero-Garcia, M. D.
dc.creatorLarsson, J.
dc.creatorMiller, J. M.
dc.creatorMiniutti, G.
dc.creatorPonti, G.
dc.creatorReis, R. C.
dc.creatorReynolds, C. S.
dc.creatorTanaka, Y.
dc.creatorYoung, A. J.
dc.date2009-05-27
dc.date.accessioned2026-07-07T13:18:33Z
dc.date.available2026-07-07T13:18:33Z
dc.descriptionSince the discovery of the first broad iron-K line in 1995 from the Seyfert Galaxy MCG--6-30-15, broad iron-K lines have been found in several other Seyfert galaxies, from accreting stellar mass black holes and even from accreting neutron stars. The iron-K line is prominent in the reflection spectrum created by the hard X-ray continuum irradiating dense accreting matter. Relativistic distortion of the line makes it sensitive to the strong gravity and spin of the black hole. The accompanying iron-L line emission should be detectable when the iron abundance is high. Here we report the first discovery of both iron-K and L emission, using XMM-Newton observations of the Narrow-Line Seyfert 1 Galaxy 1H0707-495. The bright Fe-L emission has enabled us, for the first time, to detect a reverberation lag of 30 s between the direct X-ray continuum and its reflection from matter falling into the hole. The observed reverberation timescale is comparable to the light-crossing time of the innermost radii around a supermassive black hole. The combination of spectral and timing data on 1H0707-495 provides strong evidence that we are witnessing emission from matter within a gravitational radius, or a fraction of a light-minute, from the event horizon of a rapidly-spinning, massive black hole.
dc.descriptionTo appear in Nature May 28 2009, 12 pages with 11 figures
dc.identifierhttps://arxiv.org/abs/0905.4383
dc.identifierhttp://arxiv.org/abs/0905.4383
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/231461
dc.subjectHigh Energy Astrophysical Phenomena
dc.subjectCosmology and Nongalactic Astrophysics
dc.titleThe detection of Broad Iron K and L line emission in the Narrow-Line Seyfert 1 Galaxy 1H0707-495 using XMM-Newton
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