Speaker
Description
Magnetars are natural laboratories to study matter under very strong magnetic fields at high densities. These extreme fields can modify the microscopic structure of matter by incorporating the idea of the Landau levels, which immediately the equations of state possibly triggering a phase transitions at the stellar cores. However, a full understanding of the interaction between magnetic fields and matter remains a challenge in modern astrophysics. In this work, we study phase transitions in magnetars with density-dependent magnetic fields in beta equilibrium and electrically neutral by incorporating the effects of magnetic field interaction on hadronic and quark matter. The quark phase is described using the magnetized MIT bag model while the hadronic phase is obtained from simple models for magnetized nuclear matter. Novel modifications are introduced by the Landau levels on particle number, chemical potentials, and thermodynamic quantities. By solving the Tolman-Oppenheimer-Volkoff equations, we pass to probe the stellar structure under several extreme density-dependent profiles of the magnetic field intensity and quantify if together with the phase transition strength induce sizeable modifications which can be compared with multimessenger astronomical data.