Researchers from the U.S. National Radio Astronomy Observatory Visit Irbene

October 1, 2026

On 23 September this year, the Irbene complex of the Ventspils International Radio Astronomy Centre (VIRAC), Institute of Engineering Sciences at Ventspils University of Applied Sciences, welcomed leading astronomers and researchers from the U.S. National Radio Astronomy Observatory (NRAO) – Dr Todd R. Hunter and Dr Crystal L. Brogan. During the visit, the participants discussed further scientific cooperation and technological development in radio astronomy research.


During the visit, the guests had the opportunity to explore the unique infrastructure of the Irbene radio astronomy complex, including RT-32, the largest radio telescope in Northern Europe, as well as the centre’s latest technical developments and R&D activities. Particular attention was paid to the new-generation receivers developed in-house, which enable more precise and sensitive observations of the Universe and can also be used for communication with deep-space probes.


During the working meetings, the U.S. astronomers and VIRAC researchers discussed one of the major challenges facing modern radio astronomy – radio frequency interference (RFI) – as well as strategies for mitigating its impact and improving data processing. Particular attention was given to NRAO’s cooperation with the SpaceX Starlink satellite network in developing and implementing the Operational Data Sharing (ODS) tool, which helps prevent direct satellite signals from entering the field of view of NRAO telescopes.


In discussing potential areas for joint research, both sides highlighted the opportunities for cooperation in astrophysics, particularly in studying the processes of massive star formation in the Universe. NRAO instruments, such as ALMA and the VLA/ngVLA, and the Irbene radio telescopes provide valuable and complementary observational data for this field of research.


The visit represents an important step towards broader and more open interinstitutional cooperation between Latvia’s Ventspils International Radio Astronomy Centre (VIRAC) and the U.S. National Radio Astronomy Observatory (NRAO).


This information has been prepared within the framework of the project “Ventspils University of Applied Sciences` International Cooperation and Innovation for the Development of Latvia’s Smart Specialisation” (Project No. 1.1.1.5/3/25/I/012).

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