Press Release

NAS RA V. Ambartsumian Byurakan Astrophysical Observatory (BAO)
Press release 07.09.2023

YET ANOTHER INTERNATIONAL SEMINAR AT BAO

On September 7, the Byurakan Astrophysical Observatory hosed a seminar by Tigran Arshakyan from the University of Cologne (Germany), who is also a scientific consultant of the BAO.

The report was devoted to the topic of “BL Lacertae: Relativistic transverse waves and superluminal jet motion”.

T. Arshakyan presented the studies of BL Lacertae jet dynamics on parsec to sub-parsec scales. During the seminar, he mentioned that they had used the data obtained from monitoring at 15 GHz with VLBA (Very Long Baseline Array) for 20 years thanks to the international programme MOJAVE (Monitoring of the Jets in AGN with VLBA Experiments). He also noted that moving and quasi-stationary radio components as well as transverse waves travelling downstream of the jet at superluminal speeds had been detected.

Meline Asryan