Reverberation mapping

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Recap: Black Holes that are switched on are“active”Measurements of gas &stellar kinematics showmost/all nucleated galaxiesharbor black hole at center(Kormendy & Richstone ‘95,Magorrian et al ‘98, Gebhardtet al 2000)BH mass scales withgalaxy bulge mass soformation linked, althoughunclear how. Many ofthese BHs “switched off”Peterson “An Introduction to Active Galactic Nuclei”Few % of galaxies - black hole is actively accreting material - releases large amount ofenergy over broad frequency band, from small region -nucleus - these powerful emitterscalled active galactic nuclei (AGN)
Recap: The Power behind AGNSimple arguments support that AGN must be powered by–Eddington limit requires selfgravity exceeds radiationpressure giving M > 10 6 M ¤–Accreting material has angularmomentum -forms accretiondisk that radiates asgravitational p.e. lost, only way toget enough luminosity from sucha small region–Accretion disk around a 10 6 –10 8 M ¤black hole emits thermalspectrum - peaks in UV band inagreement with observations
Page 1 and 2: Reverberation mappingOptical lines
Page 3 and 4: Reverberation mappingv =GM rGetting
Page 7 and 8: Light Crossing Time•Variations sm
Page 11: X-ray Observations of AGNWhat we ca
Page 15 and 16: Copious production of X-RaysUV phot
Page 17 and 18: X-ray Line ProductionGeorge & Fabia
Page 19 and 20: Chandra/XMMSuzakuAbsorptionfrom out
Page 21 and 22: Profile distorted SR & GR- probe of
Page 23 and 24: GR Effects on Spectral featuresProf
Page 25 and 26: MCG-6-30-15: Poster ChildTanaka et
Page 27 and 28: Absorption or Reflection as the ori
Page 29 and 30: Light bending?Suzaku lightcurveMini
Page 31 and 32: Ambiguity: - X-ray AbsorptionNGC 35
Page 33 and 34: How much evidence is there forabsor
Page 35 and 36: More Evidence for ionized outflows:
Page 37 and 38: Seyfert Spectral Variability Behavi
Page 39 and 40: Partial Covering/Occultation, resur
Page 41: Summary• Large amounts of gas are

Reverberation mapping

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