Unveiling the Transient Universe at the highest resolution with Very LongBaseline Interferometry

Benito Marcote

Joint Institute for VLBI ERIC

Sesja V: Astrofizyka wysokich energii

Środa 13.09.2023 13:15 – 13:30

The Universe is dynamic, and a large variety of transient phenomena, such as gamma-ray bursts, fast radio bursts, gravitational wave counterparts or Galactic binary systems offer insights into the nature of this dynammicity.
Thanks to very long baseline interferometry (VLBI) techniques, we can capture the precise details of these events, enabling a deeper understanding of their origins, emission mechanisms, and implications in a large number of fields.

I will present a summary on how radio observations with the European VLBI Network (EVN), involving the Torun radio telescope, have enabled the precise localizations of Fast Radio Bursts for the first time, or the strongest constraints on the expansion of gamma-ray burst and gravitational wave afterglows.
The very high resolution achieved with these observations, on the order of milliarcseconds, are key to understand the local environments where Fast Radio Bursts are produced, and how the afterglows can propagate through the surrounding and ejected material, and interstellar medium.

The EVN’s extensive network of telescopes across Europe and beyond has thus facilitated numerous groundbreaking discoveries and contributed to major scientific achievements in the last years. The on-going efforts to enhance its capabilities and integration with the future SKA-VLBI is set to boost the sensitivity, resolution, and observation speed of VLBI by orders of magnitude in the near future.