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Physics of Galactic Nuclei Workshop 2009  
A. Bohnet
M. Schartmann

Scientific workshop at Ringberg Castle

The physics of galactic nuclei has recently attracted substantial renewed interest, also due to the tentative connection to galaxy evolution.

Spectacular new high spatial resolution observations based on adaptive optics (SINFONI, NACO) and interferometric techniques (MIDI) recently unveiled unexpected new details of the central region of our own galactic centre, as well as nearby Seyfert galaxies. A consistent model has been developed that can explain different types of active galactic nuclei (AGN) as a result of inclination angle dependence of a torus surrounding an accretion disk around a central black hole. Current research focuses on the interaction with the intense radiation field, interaction of gas streams pointing towards the centre or star formation and subsequent feedback from a nuclear stellar cluster. These processes might stir turbulence in the Broad Line Region (BLR), the adjacent molecular/ dusty torus or the Narrow Line Region (NLR). The resulting multiphase turbulence governs the small-scale dynamical as well as thermodynamical evolution of the gas and necessitates special numerical techniques. This, together with the development of new efficient codes concerning the coupling of radiative transfer with hydrodynamics enables a realistic treatment of the main physical processes acting in the complicated environment we are facing in galactic nuclei.

The link to the large scale structure of the galaxy is given by black hole feedback, constrained for example by the black hole sigma relation and the redshift evolution of AGN. A better understanding of the physics of the galactic centre environment and its possible physical feedback processes towards larger scales, is therefore also essential for quantitative modelling of galaxy evolution.

The main aim of this workshop is to bring together observers and theoreticians working in the fields of active as well as currently inactive galactic nuclei and the connection of AGN to galaxy evolution, in order to acquire a more complete picture and to foster new collaborations.

Confirmed Speakers

Max Camenzind, Moshe Elitzur, Reinhard Genzel, Sadegh Khochfar, Stefanie Komossa, John Kormendy, Julian Krolik, Klaus Meisenheimer, Thorsten Naab, Hagai Netzer, Joseph Silk, Rashid Sunyaev.

Scientific Sessions

Topic Reviewer
Black Hole Physics: Accretion, Ejection and Radiation Julian Krolik
Broad and Narrow Line Region Hagai Netzer
Molecular Torus (obs./theo.) Klaus Meisenheimer / Moshe Elitzur
Large Scale Jets and interaction with the ISM Max Camenzind
Galactic centre physics (Milky Way) Reinhard Genzel
Nuclear stellar dynamics John Kormendy
Black hole galaxy connection Joseph Silk
Cosmological black hole evolution (theo/obs) Sadegh Khochfar / Stefanie Komossa


  • Invitation to Reviewers: July 28, 2008
  • First Announcement: December 18, 2008
  • Deadline for registration: March 31, 2009
  • E-Mail to accepted participants: April 7, 2009
  • Conference start: June 15, 2009


All participants will be accommodated in Ringberg Castle, the workshop venue or hotels nearby. The Organisers will make bookings for you!

Many thanks to Achim Bohnet for providing the template of this conference webpage!

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