On 13/10/2026 at 1:15 PM, in room 2011 of the Faculty of Physics, University of Białystok, prof. dr hab. Mirosław Brewczyk, Faculty of Physics, University of Bialystok will give a lecture entitled:
„Searching for cosmic vortices”
Tomasz Karpiuk
Andrzej Maziewski
„Searching for cosmic vortices”
prof. dr hab. Mirosław Brewczyk
Faculty of Physics, University of Bialystok
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.
