Co-evolution of Black Holes and Galaxies: Small Scales Issues. Andrés Escala Astorquiza DAS, U. de Chile. Observational Evidence for Coevolution. M BH - σ (Ferrarese & Merrit/Gebhardt et al. 2000), M BH -M bulge (Marconi & Hunt 2003) relations.
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Andrés Escala Astorquiza
DAS, U. de Chile
MBHs must be included in Standard Hierarchical Galaxy Formation within ΛCDM Cosmology
Small Scale Issues: Issues
Massive Black Hole Mergers Issues
Mergers of Galaxies & MBHs Issues
(Begelman, Blandford & Rees 1980’)
Stellar loss-cone depletion by 3-body kicks implies stalling of MBH binary coalescence at sub-parsec separations.
MBHs-Disk Interactions Issues
Escala et al. 04,05
Dotti et al. 09
Artymowicz & Lubow 94
Shi, Krolig et al. 12
tmerge ~ torb(Type I)
tmerge ~ 1000 torb(Type II)
Binary Proto-stars. Issues
Artymowicz & Lubow (1994) & more…
Boss (1984) & more …
Analytic Estimates Issues
Can’t be explained by Lin & Papaloizou 86’:
Type I interaction should be more frequent in wet mergers and Type II in dry ones:
However ….. 12’.
Mrk 573 12’.
Measuring AGN Feedback:
If it is not feedback, what can set M 12’.BH-σ/MBH-MBulgerelations?
Implicit assumption of huge number of MBH mergers!
Unavoidable step in the growth of Massive Black Holes and it is indeed a galactic problem!
Fueling Flowchart (Wada 2004):
BH ~ vrot 3 (Escala 06’,07’)
Mass transport in turbulent disk (assuming a power-law inertial range):
KS Law BH α Bulge
Becerra, M.Sc. 12’
Levine et al (2008)
Galaxy mergers are common events in the universe.
Each galaxy with a sizeable bulge is expected to have a MBH.
What is the fate of the BHs? Will also Coalesce?
MBH inclusion in Standard Hierarchical 12’.ΛCDM Cosmology
Summary I 12’.
Part of Fernando Becerra´s Masters Thesis (work currently in progress)
KS Law 12’.
SFR-M 12’.rot relation (Escala 2011)
SFR-Σ 12’.gas/tdyn (Silk)
Our work 12’.
Astrophysical Fluids 12’.
Hydro Methods Used 12’.
Methods 12’.: SPH
ρ(r) = Σ mj W(r-rj;hj)
adaptive spatial resolution
Methods: AMR 12’.
Galaxy Mergers 12’.