Wydarzenia

Dnia 2026-10-13 o godzinie 13:15 w sali 2011 Wydziału Fizyki UwB, odbędzie się seminarium na którym prof. dr hab. Mirosław Brewczyk z Wydziału Fizyki Uniwersytetu w Białymstoku wygłosi wykład pt

Searching for cosmic vortices

Serdecznie zapraszamy

Tomasz Karpiuk

Andrzej Maziewski

Searching for cosmic vortices

prof. dr hab. Mirosław Brewczyk

Wydział Fizyki, Uniwersytet w Białymstoku

Our study focuses on the strong tidal disruption of a cold helium white dwarf passing a black hole. We model the white dwarf as a Bose-Fermi droplet and use quantum hydrodynamic equations to simulate the binary system's evolution. As the white dwarf passes through periastron, it loses a significant amount of mass. This mass falls onto the black hole and forms an accretion disc. Quantized vortices appear in the accretion disc, manifesting as strong electromagnetic radiation signals that exhibit characteristic flickering patterns changing on a timescale of a few seconds. Meanwhile, the white dwarf moves away from the black hole. As the white dwarf moves through space, vortices run along its surface. This elongates its geometry, causing it to rotate and emit gravitational waves.