" A Chiral Asymmetry Model for Magnetars "
大西 直毅 氏（首都大学東京)
A simple model is presented to interpret a possible origin of strong
toroidal magnetic field ~1TT, suggested by an analysis of the hard
X-ray detector data. In a typical size of magnetar, the electron is a
quantum degenerate system whose Fermi energy is of the order of
100MeV, being ultra-relativistic. In the process forming neutron
stars, the gravitational energy is released mainly by emitting
neutrino created through electron capture with parity violating weak
interaction, leaving positive chirality electrons as remnant. It is
demonstrated that the relevant orbiting electrons have positive
chirality and predominantly positive helicity, resulting spin-like
currents in Gordon decomposition of Dirac current, which gives rise to
the strong toroidal magnetic field.