Probing Relativistic Astrophysics Around SMBHs: The Suzaku AGN Spin Survey

Details Probing Relativistic Astrophysics Around SMBHs: The Suzaku AGN Spin Survey Probing Relativistic Astrophysics Around SMBHs: The Suzaku AGN Spin Survey

2011-11-30

arxiv.org/abs/1112.0036v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

8 pages. To appear in the proceedings of the conference "Suzaku 2011, Exploring the X-ray Universe: Suzaku and Beyond"

Scientific paper

In addition to providing vital clues as to the formation and evolution of black holes, the spin of black holes may be an important energy source in the Universe. Over the past couple of years, tremendous progress has been made in the realm of observational measurements of spin. In particular, detailed characterization and modeling of X-ray spectral features emitted from the inner regions of black hole accretion disks have allowed us to probe the location of the innermost stable circular orbit and hence the spin. In this contribution, I will describe the Suzaku AGN Spin Survey, an on-going Cycle 4--6 Suzaku Key Project that aims to probe five nearby AGN with sufficient depth that strong gravity effects and spin can be robustly assessed. Of the three objects for which we currently have our deep datasets, we can constrain spin in two (NGC3783, a>0.9; Fairall 9, $a=0.45\pm 0.15$) whereas complexities with the warm absorber prevent us from reporting results for NGC3516. We conclude with a brief discussion of spin-dependent selection biases in flux-limited surveys.

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