Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.188..675l&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 188, Sept. 1979, p. 675-680.
Astronomy and Astrophysics
Astronomy
13
Magnetic Dipoles, Polarized Electromagnetic Radiation, Pulsars, Pulse Duration, Radio Bursts, Stellar Models, Graphs (Charts), Radio Sources (Astronomy)
Scientific paper
Relationships among period, rate of period, and pulse width are reexamined for 56 pulsars as well as the binary pulsar PSR 1923+16. A correlation between pulse width and the inverse square root of the product of period and rate of period change is investigated, and it is suggested that both quantities are linked to the angle (D) between the rotation axis and the magnetic dipole axis. A correlation is also found between the rate of swing of polarization position angle and the inverse square root of the cited product. For the pulsar sample considered it is concluded that: (1) there is a distribution of the angle D, with a preference for small angles; (2) braking torque varies with D, as expected for magnetic dipole radiation; (3) the rate of swing of polarization angle is strongly dependent on D; and (4) the angular width of the emitting region does not depend on rotation period, as would be expected in the polar-cap model.
Graham Smith F.
Lyne Andrew G.
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