Interaction of a weak gravitational wave with the field of a rotating magnetic dipole

Details Interaction of a weak gravitational wave with the field of a rotating magnetic dipole Interaction of a weak gravitational wave with the field of a rotating magnetic dipole

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978zhetf..74r.401d&link_type=abstract

(Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki, vol. 74, Feb. 1978, p. 401-407.) Soviet Physics - JETP, vol. 47, Feb. 1978,

Physics

4

Gravitational Waves, Magnetic Dipoles, Neutron Stars, Rotating Matter, Stellar Magnetic Fields, Stellar Rotation, Wave Interaction, Integral Equations, Polarized Electromagnetic Radiation, Wave Excitation

Scientific paper

The interaction of a weak gravitational wave of specified frequency with a magnetic-dipole field rotating at a frequency much less than the gravitational-wave frequency is analyzed. The gravitational-wave source is assumed to be situated at the center of the magnetic dipole. It is shown that the interaction results in the production of an electromagnetic wave with the same frequency as the gravitational wave but whose amplitude is modulated by the dipole rotation frequency. The percentage modulation and pulse shape are found to depend on the observer's coordinates as well as on the angle between the rotation and magnetic axes. The analysis indicates that the electromagnetic radiation is linearly polarized, but the plane of polarization rotates at the dipole rotation frequency. The possibility of drifting subpulses is demonstrated, and the example of a neutron star is used to estimate the distance at which the electromagnetic wave produced as a result of the interaction may be detected.

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