Scientific Symposium
Relativistic astrophysics, Theory and observational perspectives

16-19 March 2021 - CTP PAS Warsaw, Poland

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About Symposium

Theoretical studies have shown that the muti-wavelength emission in the nuclei of the active galaxies, and black hole binaries, is fueled by their accretion disks. The magnetic fields therein must mediate the transfer of mass and angular momentum. In addition, shock waves, possibly related to the regions tidally excited by the companion star in a binary system, may influence the accretion process and observed flaring emission. Finally, the episodes of jets being launched from the central engines, in both radio-blazars and in gamma ray bursts, are giving important insight into the physics of black hole accretion, and help estimate the fundamental parameters of the black holes, such as their masses and spins. These effects are studied by advanced numerical simulations, that use the methods of general relativistic magnetohydrodynamics.

Theoretical investigations are verified experimentally through the timing and spectral properties of the observed sources. In the last years, the observational context has been enormously enhanced due to discovery of gravitational waves, which give independent constraints on the masses (and possibly spins) of the merging compact stars. The multi-wavelength detection of accompanying events of the short GRBs, such as the kilonovae, have brought further important information about the conditions within the post-merger environment. Finally, the fundamental theories of gravity can be tested now with unprecedented precision through the signals from compact objects, such as quasars, supernovae, and gravitational-wave sources.

Symposium on "Relativistic astrophysics. Theory and observational perspectives" will be held on March 16-19 2021 at the Center for Theoretical Physics in Warsaw.

Topics to be covered are:

  1. Black hole accretion and relativistic jet formation.
  2. Binary compact object coalescence.
  3. Multi-messenger signals and counterparts to gravitational waves.
  4. Event horizon of the black holes.
  5. Particle acceleration via magnetic field reconnection in blazar jets.
  6. Testing General Relativity via compact objects observations.
  7. Role of supermassive black holes in the galaxy evolution.

Organizing Committee

Organizers (LOC): Agnieszka Janiuk, Bożena Czerny, Wojtek Hellwing, Michal Zajacek, Ishika Palit, Mary-Loli Martinez-Aldama, Maciej Bilicki, Rafał Opiela

Scientific Organized Committee: Michal Bejger (CAMK PAN, Warsaw), Sandip Chackrabarti (Indian Centre for Space Physics, Kolkata), Dimitrios Giannios (Purdue University), Vladimir Karas (Astronomical Institue, Prague), Nicole Lloyd-Ronning (Los Alamos National Laboratory), Enrico Ramirez-Ruiz (University of California, Santa Cruz), Marek Sikora (CAMK PAN, Warsaw)

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Confirmed Invited Speakers

  1. Mitch Begelman, University of Colorado, Boulder, USA: Magnetically elevated accretion discs in active galactic nuclei [MP4]
  2. Gennady Bisnovatyi-Kogan, Space Research Institute, Russian Federation: Formation of Magnetically Arrested Accretion Disks [MP4]
  3. Luciano Rezzolla, University of Frankfurt, Germany: Simulations of binary neutron stars and what we have learnt [MP4]
  4. Irene Tamborra, Niels Bohr Institute, Copenhagen, Denmark: Neutrinos from Core-Collapse Supernovae
  5. Silke Britzen, Max Planck Institute for Radioastronomy, Bonn, Germany: Neutrino generated in a blazar jet
  6. Monika Moscibrodzka, University of Nijmegen, the Netherlands: Properties of the central radio source in M87 using Event Horizon Telescope
  7. Andreas Eckart, University of Koeln, Germany: The nature of the compact object at the center of the Milky Way
  8. Krzysztof Nalewajko, Copernicus Astronomical Center, Warsaw, Poland: Particle acceleration in relativistic magnetic reconnection [MP4]
  9. Adam Ingram, University of Oxford, UK: Searching for Lense-Thirring precession in X-ray binaries [MP4]
  10. Isaac Shlosman, UK Lexington, USA, and Osaka University, Japan: A Path to Supermassive Black Hole Seeds