Study of high-energy transients
Technological advancements in the last decade opened a possibility to perform sky-surveys, which are repeatedly covering large areas of the sky and detect a large number of new, brief transient sources in the sky. While some are easily identified (e.g. supernovae), some remain a mystery due to their short duration.
Some of detected transients were identified as long-awaited flares from tidal disruption of a star by a massive black hole – Tidal Disruption Events (TDEs). When a star (or some other object such as a planet, asteroid, gas cloud) comes too close to a massive black hole, its tidal forces may completely destroy the star. As the star is disrupted, its internal energy released and fallback of debris on the black hole produce a bright flare, which according to theoretical predictions can be seen from X-rays to ultra-violet and optical wavelengths and can last several weeks to years.
Since 2015 researchers at the UNG participate in follow-up observations of gravitational wave events, detected by LIGO observatory, with the main focus on follow-up observations with optical telescopes and with Pierre Auger Observatory.