Press Release

NAS RA V. Ambartsumian Byurakan Astrophysical Observatory (BAO)
Press release 19.02.2023

INTERNATIONAL SEMINAR AT BAO

On October 16, the BAO hosted a seminar by Eduard Vorobyov from the University of Vienna, Austria.

The report was dedicated to “Recent developments in theoretical studies of FU Orionis-type luminosity outbursts”. The speaker talked about the luminosity bursts in young FU Orionis-type stars that warm up the surrounding disks of gas and dust, thus inflicting changes on their chemical and dust composition. Using numerical hydrodynamics simulations, E. Vorobyov compared several burst-triggering mechanisms and demonstrated that disk kinematic and morphological features might be used to distinguish them.

In addition, he also reported on the effects that such bursts might have on the spatial distribution of dust grain sizes and the corresponding spectral index in the surrounding protoplanetary disk.

Meline Asryan