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Accurate Atomic Rates for Black Hole Accretion Disks John Raymond Disk winds have been know in AGN for years and suspected in Galactic Black Hole Binaries
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Miller et al. 2006 Chandra HETG GRO1655-40
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Chance for a Serious Model 90 Absorption lines, blueshift ~ 500 – 1000 km/s Usual elements + P, Cl, K, Ti, Cr, Mn, Co Fe XXIV lines up to 2s – 10p or more Limits on emission lines (4p-3s) imply small covering fraction Photoionization model using measured X-ray continuum Density, r and Abundances are the unknowns
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Density Measurement Ratio of Fe XXII lines at 11.92 and 11.77 gives n 2 /n 1 Mauche et al. emission lines Depends on A value q electron q proton cascades 13.6 < Log n e < 14.1
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Ionization Parameter (O-Ne and Ca-Fe Abundances x 2) Differs from optical Voigt profile Unresolved doublets Inner shell Fe K ξ ~ 10 4 (soft spectrum)
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Limits on r Column Density N ~ nr Ionization parameter ξ from highest and lowest ionization stages: Fe XXVI vs Fe XXII and Model ξ = L/4πnr 2 For known L and ξ, N drops off with r, giving upper limit, For known L, ξ and n, r is known
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Physics of Wind Not Radiation-Pressure driven; measure lines and no UV Miller et al. find r < 10 9.5 < 0.1 R IC = 10 10.7 Implies not thermally driven (Begelman, McKee, Shields), leaving magnetically driven wind
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Importance of Atomic Rates Hagai Netzer says r=10 10.7 = 0.1 R IC works, so thermally driven wind is OK, but with n e only 10 13. Higher n e requires r < 10 10.4 even for his ionization parameter. XSTAR, CLOUDY seem to fall in between Woods et al require 0.2 R IC and density is < 10 12 σ phot (E) f values α rec (DR rates for high ions, low T) Δn=0 cooling transitions Fe XXII fine structure transition
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