Speaker
Mr
Antonio Graziano Pili
(Università degli Studi di Firenze)
Description
The morphology of the strong magnetic fields hosted by neutron stars plays a key role in establishing and governing the physics and the observational properties of these extreme astrophysical objects. Hence an accurate description of magnetic fields in neutron stars provides a necessary ingredient to develop realistic physical models able to shed light on the phenomenology of these compact objects. In particular, recent observations of AXPs and SGRs, support the idea of a twisted magnetosphere, and complex geometry that goes beyond the simple dipole often used in the literature.
I will present the results of a comprehensive numerical study of magnetic configurations in NSs, derived in the full GR regime, taking into account different magnetic field geometries (including the mixed poloidal-toroidal case) that arise from different choices of the current distributions located both in core and in peripheral region inside the star, but also outside in the near magnetosphere. These will be analysed in the context of their stability and possible origin. The role of magnetic field in young objects and the relative importance of EM to GW emission will be also discussed, with a particular focus on GRBs.
Primary author
Mr
Antonio Graziano Pili
(Università degli Studi di Firenze)
Co-authors
Dr
Luca Del Zanna
(Università degli Studi di Firenze)
Dr
Niccolò Bucciantini
(INAF Osservatorio Astronomico di Arcetri)
