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Anna Császár (ELTE, HUN-REN CSFK CSI)04/11/2026, 14:00
The observed lifetimes of protoplanetary disks are well established, but the mechanisms responsible for their dispersal are still under investigation. In the classical α-viscous model angular momentum transport is assumed to be driven by the magnetorotational instability (MRI), which requires sufficient ionization. The ionization structure of a disk is spatially non-uniform: highly ionized...
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Botond Máté Marosi (Eötvös Loránd University)04/11/2026, 14:15
Protoplanetary discs are the birthplaces of planets and small bodies, where small dust grains grow into larger particles during the early stages of planet formation. Observations at millimeter and submillimeter wavelengths can trace this dust, study its distribution within the disc, and investigate the conditions under which dust grows. The Atacama Large Millimeter/submillimeter Array (ALMA)...
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János Pető (HUN-REN Research Centre For Astronomy and Earth Sciences)04/11/2026, 14:30
Studies of chondritic meteorites originating from the Solar System have revealed that chondrules - small, spherical silicate inclusions - can be formed by intense, rapid heating followed by rapid cooling. A viable explanation for their formation is that in the primordial stages of the protoplanetary disk electrical discharges or lightning can occur and cause melting of the different size dust...
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András Németh (Eötvös Loránd University)04/11/2026, 14:45
The migration of low-mass planets is governed by the interplay between gravitational torques from the gaseous and solid components of the protoplanetary disc. Performing 2D global hydrodynamic simulations in locally isothermal discs, we investigate the often-neglected back-reaction of solid material on gas dynamics across varying metallicities, Stokes numbers, and accretion efficiencies. Our...
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111. Time-Domain Complementary Science with Ariel: Young Stellar Objects, Debris Discs and ExocometsNóra Takács (HUN-REN CSFK Konkoly Observatory)04/11/2026, 15:00
Young stellar objects (YSOs) exhibit variability over a wide range of timescales and amplitudes, driven by stellar activity, variable extinction and disc accretion. Disentangling these processes remains challenging, yet their variability provides key insights into stellar mass assembly and the evolution of young planetary systems. The broad wavelength coverage and spectroscopic capabilities of...
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Adrija Bhowmick (HUN-REN Atomki, Debrecen, Hungary)04/11/2026, 15:15
The development of sustainable lunar infrastructure requires construction materials that can withstand extreme temperature variations and persistent radiation exposure while reducing dependence on Earth-supplied resources. Materials intended for in situ resource utilisation (ISRU), including polymers, metallic composites, aerogels and lunar regolith analogues, must be evaluated under relevant...
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Veronika Napsugár Csillag (ELTE, HUN-REN CSFK CSI)06/11/2026, 09:00
Our project’s aim is to find out more information about the impact of UV-C radiation on multicellular organisms connected to space exploration and exoplanet habitability. It is an interdisciplinary collaboration between the fields of astronomy and biology. Through the examination of TESS and Kepler lightcurves of different flaring stars with exoplanets in their habitable zone, such as Proxima...
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Anna Bognár (Konkoly Observatory, HUN-REN CSFK / Eötvös Loránd University)06/11/2026, 09:15
This presentation introduces a theoretical model that explores the
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possibilities of how liquid water could persist on the surface of
Mars. Indeed, hygroscopic salt crystals found on the surface are
capable of binding atmospheric water vapor, thereby forming a liquid
solution. The main challenge is preserving these solutions in the
extremely dry daytime environment. The model is based on... -
Katalin Nagy06/11/2026, 09:30
The formation of Warm Jupiters (with a period about 30 days and highly eccentric orbit (e > 0.3)) is still an open question. I investigated their possible early origins, ie. still embedded in the protoplanetary disk using numerical hydrodynamical simulations with the code GFARGO2. Assuming that planets are orbiting in the inner cavity of the disk, I found that planets can reach highly...
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Péter Csernyik (University of Toronto)06/11/2026, 09:45
Recently, several rings were discovered around various minor planets and asteroids. The origin and history of these rings are not well understood yet. We specifically focus on the ring of the dwarf planet Haumea and its perturbed nature. In this project, we are using numerical simulations with a modified version of the REBOUND N-body code to study the dynamical effects occurring in this...
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Gergő Lakatos (HUN-REN Atommagkutató Intézet)06/11/2026, 10:00
Carbonate minerals are treated as important tracers of geochemical conditions for a variety of different astronomical objects. Although, the fact that they have been detected in a number of environments where the conditions necessary for hydrothermal formation – universally accepted in the past as the dominant patway – are missing, has fueled interest about their possible alternative formation...
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István Gergely Hegedüs (ELTE, CSFK)06/11/2026, 10:15
The formation and orbital evolution of giant planets are strongly influenced by the physical properties and dynamical evolution of their protoplanetary disks. In this work, we investigate giant planet formation and migration in protoplanetary disks evolving under the combined effects of viscous accretion and magnetically driven disk winds. We adopt an analytical disk model to describe the time...
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