Magnetospheres of neutron stars in compact binaries: precursor electromagnetic signals

F. CARRASCO

Córdoba

Congreso; CosmoSur VI; 2022

Observatorio Astronómico de Córdoba (OAC)

In this talk, I will show recent numerical results for a neutron star orbiting a black hole, aiming at clarifying the main magnetosphere properties of such binaries toward their innermost stable orbits. The plasma environment surrounding these compact binary systems is modeled by relying on the force-free approximation. Several configurations are explored, varying the orbital separation, the individual spins and misalignment angle among the magnetic and orbital axes. I will discuss how these systems are able to channel a fraction of their large kinetic energies (and how much) on each of the particular settings, and how this energy could be re-processed within the magnetosphere to potentially produce precursor electromagnetic signals on the different bands of the spectrum. Finally, I will comment on a dynamo effect arising from the misalignment of the individual spins.