Speaker
Bruno Franzon
(FIAS, Goethe-University, Frankfurt am Main)
Description
In this work we study the effects of strong magnetic fields on hy
brid stars by using a full general-
relativity approach, solving the coupled Maxwell-Einstei
n equation in a self-consistent way. The
magnetic field is assumed to be axi-symmetric and poloidal. W
e take into consideration the
anisotropy of the energy-momentum tensor due to the magneti
c field, magnetic field effects on
equation of state, the interaction between matter and the ma
gnetic field (magnetization), and the
anomalous magnetic moment of the hadrons. The equation of st
ate used is an extended hadronic
and quark SU(3) non-linear realization of the sigma model th
at describes magnetized hybrid stars
containing nucleons, hyperons and quarks. According to our
results, the effects of the magnetization
and the magnetic field on the EoS do not play an important role o
n global properties of these stars.
On the other hand, the magnetic field causes the central density in these objects to be reduced,
inducing major changes in the populated degrees of freedom a
nd, potentially, converting a hybrid
star into a hadronic star.
Primary author
Bruno Franzon
(FIAS, Goethe-University, Frankfurt am Main)
Co-authors
Stefan Schramm
Veronica Dexheimer
(Kent State University)
