Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apjs...41...75r&link_type=abstract
Astrophysical Journal Supplement Series, vol. 41, Sept. 1979, p. 75-86.
Astronomy and Astrophysics
Astrophysics
Electromagnetic Fields, Magnetic Stars, Multipolar Fields, Neutron Stars, Pulsars, Stellar Radiation, Stellar Rotation, Axes Of Rotation, Formalism, Fourier Transformation, Momentum, Radiant Flux Density, Recoilings, Stellar Evolution
Scientific paper
A formalism is developed for treating general multipole electromagnetic fields of neutron stars. The electric multipoles induced in a neutron star by its rotation with an arbitrary magnetic multipole at its center are presented. It is shown how to express a family of off-centered multipoles having the same l weight as an infinite array of centered multipoles of increasing l weight referred to the rotational axis. General expressions are given for the linear momentum present in the superposition of arbitrary multipole fields, and the results are combined to compute the radiation rate of linear momentum by an off-centered dipole to zeroth order in the parameter Omega x R/c. The general Deutsch (1955) solution is then rederived in a clear consistent manner, and some minor additions and corrections are provided.
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