2012MNRAS.421.2722K

Query : 2012MNRAS.421.2722K

2012MNRAS.421.2722K - Mon. Not. R. Astron. Soc., 421, 2722-2730 (2012/April-2)

Magnetic field decay with hall drift in neutron star crusts.

KOJIMA Y. and KISAKA S.

Abstract (from CDS):

The dynamics of magnetic field decay with Hall drift is investigated. Assuming that axisymmetric magnetic fields are located in a spherical crust with uniform conductivity and electron number density, the long-term evolution is calculated up to Ohmic dissipation. The non-linear coupling between poloidal and toroidal components is explored in terms of their energies and helicity. Non-linear oscillation of the drift in strongly magnetized regimes is clear only around equipartition between the two components. Significant energy is transferred to the poloidal component initially when the toroidal component dominates. However, the reverse is not true. Once the toroidal field is less dominant, it quickly decouples due to a larger damping rate. The polar field at the surface is highly distorted from the initial dipole during the Hall drift time-scale, but returns to the initial dipole over a longer dissipation time-scale, since it is the least damped form.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): magnetic fields - stars: magnetars - stars: neutron

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Sgr J0418+5729 gam 04 18 33.867 +57 32 22.91           ~ 244 0

Query : 2012MNRAS.421.2722K

Basic data :
NAME Sgr J0418+5729 -- Gamma-ray Source
Other object types: otypes_help 		Psr (PSR), gam (2010Sci), Rad (MITG)
ICRS coord. (ep=J2000) : 		04 18 33.867 +57 32 22.91 [ ] D 2010ApJ...711L...1V
FK4 coord. (ep=B1950 eq=1950) : 		04 14 25.852 +57 25 05.65 [ ]
Gal coord. (ep=J2000) : 		147.979050 +05.119139 [ ]
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Identifiers (4) :
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MITG J0418+5732 NAME Sgr 0418+5729 NAME Sgr J0418+5729 PSR J0418+5732

References (244 between 1850 and 2026) (Total 244)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Data at NED - NASA/IPAC Extragalactic Database : NAME Sgr J0418+5729

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MITG J0418+5732

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