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Clocking Super-Massive Black Hole Spin with Accuracy

Clocking Super-Massive Black Hole Spin with Accuracy. MCG–6-30-15:. Observations by Suzaku unambiguously confirm the extremely broad Fe K line in MCG–6-30-15 We accurately quantify how far in the accretion disk reaches (< 2 gravitational radii)

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Clocking Super-Massive Black Hole Spin with Accuracy

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  1. Clocking Super-Massive Black Hole Spin with Accuracy MCG–6-30-15: • Observations by Suzaku unambiguously confirm the extremely broad Fe K line in MCG–6-30-15 • We accurately quantify how far in the accretion disk reaches (< 2 gravitational radii) • The presence of a Kerr, or spinning, black hole is confirmed • We measure the black hole spin parameter to be 90% of maximum

  2. Warped Space-Time & Light-Bending Near the Black Hole in MCG–6-30-15 • Observationally confirm that space-time very close to the black hole is "warped", a key component in Einstein's General Relatively • Light paths close to the black hole can be sharply curved: photons traveling away from the accretion disk can be redirected onto the disk • Confirmation made possible only via Suzaku’s broad energy coverage

  3. Evidence for gravitational light bending around the black hole in MCG–6-30-15 Strong iron K line and disk reflection from around a Kerr (spinning) black hole. No strong variations in iron line - gravitational light bending around a Kerr Black hole. Suzaku lightcurve Constant Reflection hump and iron line

  4. Suzaku can measure the geometry of the accretion disk In MCG–5-23-16, the disk is viewed at an inclination angle of 50 degrees In MCG–6-30-15, the disk is viewed more face-on, at an angle of 30 degrees “Edge-on” Disk “Face-on” Disk

  5. Suzaku Black Hole Spin Measurements MCG–5-23-16 (no evidence for black hole spin) MCG–6-30-15 (spinning black hole)

  6. Iron Line Emission From Multiple Regions of Gas MCG -5-23-16 Narrow line Broad line • Suzaku has unambiguously measured the broad and narrow iron lines. • Narrow line emission denotes (low velocity) gas, distant from the black hole, far from the region of extreme gravity • X-ray emission is seen both from gas very close to the black hole and gas that is distant • Confirms our picture of the geometry and accretion flow in AGN

  7. XMM/Chandra Suzaku Suzaku’s Broad Bandpass Absorption from outflow  X-ray Continuum Iron KLine Thermal Disk Emission? Compton Reflection hump

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