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Probing the surface magnetic field structure in RX J1856.5-3754
- Publication Year :
- 2017
- Publisher :
- Oxford University Press, 2017.
-
Abstract
- The evolution of magnetic field in isolated neutron stars is one of the most important ingredients in the attempt to build a unified description of these objects. A prediction of field evolution models is the existence of an equilibrium configuration, in which the Hall cascade vanishes. Recent calculations have explored the field structure in this stage, called the Hall attractor. We use X-ray data of near-by, cooling neutron stars to probe this prediction, as these sources are surmised to be close to or at Hall attractor phase. We show that the source RX J1856.5-3754 might be closer to the attractor than other sources of its class. Our modelling indicates that the properties of surface thermal emission, assuming that the star is in the Hall attractor, are in contradiction with the spectral data of RX J1856.5-3754.<br />Comment: 9 pages, accepted to MNRAS
- Subjects :
- Physics
Surface (mathematics)
High Energy Astrophysical Phenomena (astro-ph.HE)
Field (physics)
Phase (waves)
FOS: Physical sciences
X-rays: stars
Astronomy and Astrophysics
Astrophysics
Star (graph theory)
01 natural sciences
Radiation mechanisms: thermal
Stars: neutron
Magnetic field
Neutron star
Stars: individual: RX J1856.5-3754
Cascade
Space and Planetary Science
Magnetic fields
0103 physical sciences
Attractor
Astrophysics - High Energy Astrophysical Phenomena
010306 general physics
010303 astronomy & astrophysics
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....3b5891d807da67bdb7b3c630ec13e10c