Accretion in Strong Gravity, Bad Honnef, Germany

The guiding theme of this seminar is the observation, the modelling and the theoretical description of accretion processes in systems where gravity is strong and nonlinear. Accreting matter are the objects which most closely approach compact objects like black holes or neutron stars and, therefore, are an ideal laboratory to explore the effects of strong gravity. Recently technological developments in observation techniques lead to a strongly improved accuracy in observing accretion discs and related phenomena. This trend will be continued in the next years, for instance with observations of ALMA and the James-Webb telescope, but also with survey telescopes like PanSTARRS or LSST. This development has to be paralleled by the theoretical description and modelling.

Basic open questions in accretion disc physics which will be discussed in this seminar include the description of viscosity and turbulence, in particular in the relativistic context, the effective equations of accretion, evolution of supermassive black holes, accretion discs in generalised theories of gravity, and GRMHD simulations. Summarized, the topics of this seminar are

Observation of astrophysical accretion and related phenomena
The basic equations of accretion and their structure
Applications to accretion discs and the accretion process
Numerical simulation of accretion in strong gravity

Confirmed invited speakers are so far
Prof. Dr. Axel Brandenburg
Prof. Dr. Wolfgang Duschl
Prof. Dr. Andreas Eckart
Prof. Dr. Jose Antonio Font
Prof. Dr. Domenico Giulini
PD Dr. Rodion Groll
Prof. Dr. John Hawley
Dr. Eva Hackmann
Dr. Tobias Illenseer
Prof. Dr. Vladimir Karas
Prof. Dr. Jutta Kunz
Prof. Dr. Claus Laemmerzahl
Prof. Dr. Shin Mineshige
Dr. Monika Moscibrodzka
PD Dr. Volker Perlick
Dr. Daniela Pugliese
Prof. Dr. Luciano Rezzolla
Prof. Dr. Paul Romatschke
Dr. Oldrich Semerak
Dr. Odele Straub

There is no conference fee. The Wilhelm and Else Heraeus-Foundation bears the cost of full-board accommodation for all participants. Up to 75 persons including invited speakers can participate in the seminar. To express your interest in the conference please fill the application form on our website, or contact us directly.

Summer school on relativistic accretion, Bremen, Germany

The Research Training Group (RTG) „Models of Gravity“ organises a summer school on relativistic accretion in September, 26-30, at the University of Bremen, Germany. The full title of the summer school is “Relativistic accretion: theoretical models and their application to observations”, the main foci of the school are the analytical models, current state of observational data from accretion discs around astrophysical black holes and Active Galactic Nuclei (AGN), and the application of the theoretical models for determination of the properties of astrophysical compact objects from observations.

Confirmed Speakers:

Marek A. Abramowicz, N. Copernicus Astronomical Center, Warsaw, Poland.
Wolfgang J. Duschl, Christian-Albrechts-Universitaet, Kiel, Germany.
Vladimir Karas, Charles University, Prague, Czech Republic.
Odele Straub, LUTH, Observatoire de Paris, France

The registration deadline is on August 29. More info can be found by clicking on the “external link” above.