Polarimetry of the millisecond pulsar

Details Polarimetry of the millisecond pulsar Polarimetry of the millisecond pulsar

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.302..690s&link_type=abstract

Nature (ISSN 0028-0836), vol. 302, April 21, 1983, p. 690-692.

Astronomy and Astrophysics

Astronomy

16

Magnetospheres, Polarimetry, Pulsars, Stellar Structure, Astronomical Observatories, Circular Polarization, Polarized Radiation, Temporal Resolution, Waveforms

Scientific paper

Polarization observations of the millisecond pulsar PSR1937+21 at 1415 and 2380 MHz were made with the 305-m telescope at the Arecibo Observatory in January 1983. The main pulse is found to depolarize substantially, while the interpulse polarization almost doubles. Evidence for orthogonally polarized radiation was detected on the edges facing across the 173 deg of longitude separating the main pulse from the interpulse, accounting for the approximately 90-deg difference in position angle. From the spectral-index difference (close to 1.0 over the frequency range observed) it is inferred that the interpulse may dominate the main pulse below 700 MHz; such behavior is noted to be similar to that of the physically different Crab pulsar.

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