Testing Black Hole Unification

Details Testing Black Hole Unification Testing Black Hole Unification

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop..173v&link_type=abstract

XMM-Newton Proposal ID #06063212

Physics

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Ngc 4051, Ngc 4051, Ngc 4051, Ngc 4051, Ngc 4051, Ngc 4051, Ngc 4051, Ngc 4051, Ngc 4051, Ngc 4051, Ngc 4051, Ngc 4051

Scientific paper

We propose a 480 ks observation of NGC 4051 to definitively test for quasi-periodic oscillations (QPOs) analogous to those seen in Galactic Black Holes (GBHs). These would confirm the unifying link between accreting black holes of all masses and provide a powerful new diagnostic of the strong-gravity region, giving the most model-independent constraints on black hole spin. We will reveal for the first time the X-ray variability of a black hole at frequencies far above the Keplerian frequency of the innermost stable circular orbit, beyond what is possible for GBHs, and use this to probe the dynamics and geometry of the X-ray emission region.

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