30 September 2015 to 3 October 2015
Yerevan, Armenia
Etc/GMT+4 timezone

A self-consistent study of magnetic field effects on hybrid stars

30 Sep 2015, 17:00
30m
Main Hall, Guesthouse ()

Main Hall, Guesthouse

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)

Presentation Materials

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