Konkoly Extragalactic Workshop 2026

Session

Talks

17 Mar 2026, 15:30

Detre Hall (Konkoly Observatory)

17. Catalogs of voids, clusters and quasars densities from the Gaia data

Nestor Arsenov (Institute of Astronomy, Sofia; Konkoly Observatory, Budapest)

17/03/2026, 15:30

Understanding the formation and evolution of the cosmic web of galaxies is a fundamental goal of both theoretical and observational cosmology, which use various tracers of the cosmic large-scale structure at an ever wider range of redshifts. We present an advancement in mapping of the cosmic web at high redshifts using observational and synthetic catalogues of quasars, which offer a powerful...

11. VLBI Imaging Studies of Dual and Multiple AGN Systems

Wancheng Xu (Xinjiang Astronomical Observatory of the Chinese Academy of Sciences; Konkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences)

17/03/2026, 15:45

Dual and multiple active galactic nuclei (AGN) in merger systems play a crucial role in our understanding of supermassive black hole growth and evolution. However, the current scarcity of confirmed samples limits statistical studies. In this talk, I will present an overview of my ongoing research using high-resolution Very Long Baseline Interferometry (VLBI) to characterize and confirm scarce...

18. Investigation of super-Eddington disks around TDE's

Domonkos Szabó

17/03/2026, 16:00

Tidal disruption events (TDEs) occur when a supermassive black hole’s (SMBH) gravitational pull tears a star apart, resulting in a bright burst of electromagnetic radiation. These events provide important information about the environment of SMBHs. When the star is disrupted, some of its material forms an accretion disk around the black hole, emitting radiation as it heats up. However, the...

3. Star formation history of galaxy mergers in IllustrisTNG

Bendegúz Koncz (Debreceni Egyetem)

17/03/2026, 16:15

Galaxy evolution over time remains unclear, with ongoing debate about how collisions affect star formation and metallicity. The role of the local environment shaped by the large-scale structure of the Universe in galaxy mergers may be significant, yet it has not been thoroughly examined. Using the IllustrisTNG cosmological simulation, we processed the catalogue data and merger tree files of...