Spot-like structures of neutron star surface magnetic fields
نویسندگان
چکیده
منابع مشابه
Spot–like Structures of Neutron Star Surface Magnetic Fields
There is growing evidence, based on both X–ray and radio observations of isolated neutron stars, that besides the large–scale (dipolar) magnetic field, which determines the pulsar spin–down behaviour, small–scale poloidal field components are present, which have surface strengths one to two orders of magnitude larger than the dipolar component. We argue in this paper that the Hall–effect can be...
متن کاملOrigin of neutron star magnetic fields
Possible origins of the magnetic fields of neutron stars include inheritance from the main sequence progenitor and dynamo action at some stage of evolution of progenitor. Inheritance is not sufficient to explain the fields of magnetars. Energetic considerations point to differential rotation in the final stages of core collapse process as the most likely source of field generation, at least for...
متن کاملNeutron star composition in strong magnetic fields
We study the problem of neutron star composition in the presence of a strong magnetic field. The effects of the anomalous magnetic moments of both nucleons and electrons are investigated in relativistic mean field calculations for a β-equilibrium system. Since neutrons are fully spin polarized in a large field, generally speaking, the proton fraction can never exceed the field free case. An ext...
متن کاملPauli Paramagnetism of Neutron Star Matter and the Upper Limit for Neutron Star Magnetic Fields
A relativistic version of Pauli paramagnetism for n − p − e system inside a strongly magnetized neutron star has been developed. An analytical expressions for the saturation value of magnetic field strength for each of these constituents at which they are completely polarized have been obtained. From the fully polarized configuration of electronic component, an upper limit for neutron star magn...
متن کاملEffects of Strong Magnetic Fields on Neutron Star Structure
We study static neutron stars with poloidal magnetic fields and a simple class of electric current distributions consistent with the requirement of stationarity. For this class of electric current distributions, we find that magnetic fields are too large for static configurations to exist when the magnetic force pushes a sufficient amount of mass offcenter that the gravitational force points ou...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2003
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20034605