Journal Article

Some comments on the electrodynamics of binary pulsars

Emanuele Sobacchi and Mario Vietri

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 450, issue 2, pages 2116-2121
ISSN: 0035-8711
Published online April 2015 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1093/mnras/stv718
Some comments on the electrodynamics of binary pulsars

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We consider the electrodynamics of inspiralling binary pulsars, showing that there are two distinct ways in which they may emit radiation. On the one hand, even if the pulsars do not rotate, we show that in vacuo orbital rotation generates magnetic quadrupole emission, which, in the late stages of the binary evolution becomes nearly as effective as magnetic dipole emission by a millisecond pulsar. On the other hand, we show that interactions of the two magnetic fields generate powerful induction electric fields, which cannot be screened by a suitable distribution of charges and currents like they are in isolated pulsars. We compute approximate electromotive forces for this case.

Keywords: binaries: close; stars: neutron; pulsars: general

Journal Article.  5065 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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