Physical Sciences: New Source of Intense Magnetic Fields in Neutron Stars

Details Physical Sciences: New Source of Intense Magnetic Fields in Neutron Stars Physical Sciences: New Source of Intense Magnetic Fields in Neutron Stars

Jan 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970natur.225...47c&link_type=abstract

Nature, Volume 225, Issue 5227, pp. 47-48 (1970).

Physics

11

Scientific paper

RECENTLY there has been interest in the problem of intense magnetic fields (IMF) in gravitationally collapsed bodies1-6. In particular, the radio emission from neutron stars (pulsars) suggests strong magnetic fields of the order of 1012 G (refs. 5 and 7). According to the law of flux conservation, in a collapse process the magnetic fields strength increases as the square of the contracting factor a (> 1). If the initial magnetic field is of the order of 103 G (the field in sunspots) before collapse, then assuming contraction from a star of one solar radius ~1011 cm to that of a neutron star of 106 cm, a field strength of 1013 G may be achieved. Magnetic fields in ordinary stars are usually attributed to non-equilibrium processes such as the existence of currents in the form of drifting charges, but we have recently shown that a new kind of quasi -equilibrium state exists, which possesses a uniform self-consistent magnetization8.

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