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The Extreme Hard Excess and Black Hole Spin of IRAS 13197-1627

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ESA Earth Online2026-06-22 收录
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The nearby type 1.8 Seyfert galaxy IRAS 131971627 shows evidence for some ofthe strongest accretion disk reflection observed among local, Comptonthin AGN.This indicates an extreme accretion geometry in which the intrinsic continuumemission experiences strong gravitational light bending, resulting in an Xrayspectrum dominated by reflection from the inner accretion disk. We request acoordinated broadband Xray observation of this remarkable source with XMM andNuSTAR. This will enable us to robustly confirm the extreme reflection, andutilize the full potential of the latest models to measure the black hole spinand constrain the coronal geometry, selfconsistently accounting for both therelative strength and the profile of the reflected emission. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]

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European Space Agency
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