Stability analysis of spin evolution in compact binaries with black hole, neutron star, gravastar, or boson star components

Speaker: Prof. Laszlo Arpad Gergely, Institute of Physics, University of Szeged, Szeged, Hungary

I will discuss the spin dynamics and stability of precessing compact binaries on eccentric orbit with gravastar, black hole, neutron star, or boson star components. This is based on a closed system of first-order differential equations characterising the secular evolution to second post-Newtonian–order, with leading-order spin-orbit, spin-spin, and mass quadrupole-monopole contributions included.

In summary, both the spin dynamics and the stability of fixed points heavily depend on the nature of the binary components.