Ross Church: White dwarf - neutron star and white dwarf - black hole binaries
Datum objave: 12. 7. 2018
V sredo, 18. julija ob 11. uri, bo imel Ross Church (Lund University, Švedska) Astrodebato o dvojnih sistemih ki vključujejo kompaktne objekte (bele pritlikavke, nevtronske zvezde, črne luknje). Predavanje bo v predavalnici F2 v stavbi na Jadranski 19. Vljudno vabljeni!
White dwarf - neutron star and white dwarf - black hole binaries: Formation, merger and consequences
Department of Astronomy and Theoretical Physics, Lund University, Švedska
The discovery of numerous classes of faint, anomalous supernovae by the Palomar Transient Factory has led to an increased interest in rare compact binaries and what happens to them when they merge following gravitational wave emission. I will discuss binaries containing a white dwarf and a neutron star, which are interesting candidates for producing luminous transients. We combine binary population synthesis calculations to work out how they form, smoothed particle hydrodynamics modelling of mass transfer to discover what happens when they merge, and galactic orbit modelling to find out where their mergers might be observed. Finally, I will talk about their more massive cousins, compact white-dwarf black-hole binaries, and try to convince you that we have discovered one in the core of the globular cluster 47 Tucanae.