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W.Kollatschny, Zetzl, Z.Alvi.  Information about the Structure and the Kinematics of the inner most region surrounding an AGN can be revealed by analyzing.

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Presentation on theme: "W.Kollatschny, Zetzl, Z.Alvi.  Information about the Structure and the Kinematics of the inner most region surrounding an AGN can be revealed by analyzing."— Presentation transcript:

1 W.Kollatschny, Zetzl, Z.Alvi

2  Information about the Structure and the Kinematics of the inner most region surrounding an AGN can be revealed by analyzing the broad emission line profiles in the spectra.  The shape and the width of the emission line profiles from AGN depends on a number of parameters such as  Velocity Fields  Geometrical structure of the line emitting gas  Obscuration effects  The Anisotropy/Isotropy of the emission line  The superposition of emission lines from different regions etc

3 Emission line Profiles  The emission line profiles as dipicted from various kinematical and dynamical models, emitted in the BLR region of AGN are as follows:  Gaussian Profiles due to Doppler motions  Lorentzian Profiles due to Turbulent motions  Exponential profiles due to Electron scattering  Logarithmic profiles due to Inflow/Outflow motions  Lorentzian and Guassian profiles are the most accepted profiles which are thought to be emitted intrinsically.  Rotational broadening of emission line profiles is the dominant broadening mechanism as shown previously in (ref: paper I W.kollatschny). Emission line profiles resulting from different kinematic models for the BLR in AGN.Profiles are scaled to the FWHM=500km/sec

4 The investigation of the profile shapes of the UV/Optical broad emission lines in AGN shows that  Lorentzian profiles and the rotational broadening are the two basic components causing the line profile shapes.  To each specific emission line belongs an intrinsic turbulent velocity.The turbulent velocity range from 500 km/sec(H β ) to 5000 km/sec(ly α +Nv λ 1240)  The correct intrinsic rotational velocities can be obtained by taking into consideraton the effect of turbulence.  The correction factors for getting the intrinsic FWHM from the Observed FWHM of different emission lines caused by rotation only have been already calculated and presented in the paper(Ref). Ref:The shape of broad line profiles in AGN by W.kollatschny,M.Zetzl

5 Rotational line broadening of Lorentzian H β profile (v turb = 500 km/s). Theoretical modeling Rotational line broadening of Lorentzian CIV λ 1550 profile (v turb = 3000 km/s). Theoretical modeling Rotational line broadening of a Guassian H β profile (v turb = 500 km/s). Theoretical modeling

6 Theoretical modeling by rotational broadening of Lorentzian Profiles

7  The mass of the Black holes is calculated by using the following mass scaling relationships referred in(M.Vetergaard 2003): The black hole (BH) mass equation based on optical data: The black hole(BH) mass equation relevant for UV data:

8 SDSS ObjectsZ=0±0.1Z=1.9±2.1Z=3.9±4.1 No of Spectras11044056 Total: 606 Using IRAF as a tool for measuring the observed FWHM and continuum luminosity for calculating BH masses. Later on will apply the correction factors to get the intrinsic FWHM of the observed line width caused by rotation only in order to calculate the correct Black hole masses(i-e after removing the effects due to turbulence).

9 Object IDFWHMRedshiftFlux@5100ADistance of the sourceLuminosityLog MBH/Msun Km/secZerg /cm2/secD MPCerg/sec 52138-3862958.523636.16E-022.95E-12246.42.14E+437.173423368 52138-3862958.523636.32E-022.95E-12252.82.25E+437.18901428 52138-3862958.523636.00E-022.95E-122402.03E+437.157422121 51994-3944607.530869.31E-021.36E-12372.42.26E+437.574289417 51994-3944607.530869.47E-021.36E-12378.82.33E+437.584649834 51994-3944607.530869.15E-021.36E-123662.18E+437.563749395 52378-4583337.761469.91E-022.55E-12396.44.80E+437.523778555 52378-4583337.761461.00E-012.55E-12401.24.92E+437.531096745 52378-4583337.761469.79E-022.55E-12391.64.68E+437.516371207 5264-4472762.452317.34E-021.89E-12293.61.95E+437.085601127 5264-4472762.452317.49E-021.89E-12299.62.03E+437.097901188 5264-4472762.452317.19E-021.89E-12287.61.87E+437.07304709 52709-1493182.672519.38E-025.03E-12375.28.46E+437.654887075 52709-1493182.672519.51E-025.03E-12380.48.70E+437.663255825 52709-1493182.672519.25E-025.03E-123708.23E+437.646401527 54507-3762900.391418.41E-025.09E-12336.46.89E+437.51161838 54507-3762900.391418.63E-025.09E-12345.27.25E+437.5273191 54507-3762900.391418.19E-025.09E-12327.66.53E+437.495501448 54208-3733509.229513.38E-027.38E-12135.21.61E+437.235956154 54208-3733509.229513.54E-027.38E-12141.61.77E+437.26407734 54208-3733509.229513.22E-027.38E-12128.81.46E+437.206470993 53730-2544346.421235.70E-021.85E-122281.15E+437.319144317 53730-2544346.421235.84E-021.85E-12233.61.21E+437.333897505 53730-2544346.421235.56E-021.85E-12222.41.10E+437.304024227 52646-605265.540447.27E-022.77E-12290.82.80E+437.755779113 52646-605265.540447.45E-022.77E-122982.94E+437.77064972 52646-605265.540447.09E-022.77E-12283.62.66E+437.740535667 52427-1864095.134250.07142.08E-12285.62.03E+437.440269481 52427-1864095.134250.07292.08E-12291.62.12E+437.452910525 52427-1864095.134250.06992.08E-12279.61.95E+437.427360031 53475-4905831.06999.63E-024.14E-12385.27.34E+438.137534171 53475-4905831.06999.87E-024.14E-12394.87.71E+438.152501383 53475-4905831.06999.39E-024.14E-12375.66.98E+438.122189199 52283-4874970.287452.36E-028.22E-1294.48.77E+427.35269774 52283-4874970.287452.53E-028.22E-12101.21.01E+437.394989666 52283-4874970.287452.19E-028.22E-1287.67.55E+427.307242697

10 Expected Result:  The finally calulated BH Masses using corrected FWHM are a factor 2 -10 or more lower than to the ones not corrected for the effect of turbulence. FWHM correction factor for different Emission lines

11 Distribution of MBH with Redshift ref(M.Vestergaard 2003) The finally calulated BH Masses using corrected FWHM are a factor 2 -10 or more lower than to the ones not corrected for the effect of turbulence.

12  Narrow CIV λ 1549 lines are rare (~2%) compared with narrow H β (~20%)(Baskin & Laor, 2005)  Different mass scaling relations are needed for the CIV λ 1549 and H β line (Vestergaard 2006).  The use of the CIV λ 1549 line gives considerably different BH masses compared to H β (Netzer et al., 2007).  By using `Accretion Disk Theory` we can explain the geometrical structure of accretion disk knowing the corresponding turbulent and rotational velocities. → fast rotating broad line AGN: geometrically thin accretion disk → slow rotating narrow line AGN: geometrically thick accretion disk

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