Start Presentation: The hidden SMBH population over cosmic time

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Author: Johannes Buchner

Homepage: http://astrost.at/istics/

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The hidden SMBH population over cosmic time

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Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019) Research interests
Multi-wavelength 
Association NWAY
Luminosity function
Heavily obscured AGN
SMBH occupation
f(M*,z)
Hierarchical Bayesian
Models
Nested Sampling &
PyMultiNest
Cosmological Sims
Spectral fitting 
with low counts (BXA)
Geometry of obscurer
from X-ray spectra
Obscured, CTK fraction
by galaxy gas f(M*,z)
Obscured, CTK fraction
f(L,z)
Volonteri 2012, Rees 1978
GC / IR group at MPE
Schödel+02, Eisenhauer+05, Gillessen+09
z=?
z=0
Efficiency of seeding process?
How many SMBHs are there
 (at least)
?
see Buchner et al. (2019)