PSR 1957 + 20 - Polarization and the nature of the eclipsing medium

Details PSR 1957 + 20 - Polarization and the nature of the eclipsing medium PSR 1957 + 20 - Polarization and the nature of the eclipsing medium

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989nyasa.571..420t&link_type=abstract

(NASA, NSF, Texas Academy of Science, et al., Texas Symposium on Relativistic Astrophysics, 14th, Dallas, TX, Dec. 11-16, 1988)

Astronomy and Astrophysics

Astrophysics

4

Circular Polarization, Eclipses, Pulsars, Polarimeters, Signal To Noise Ratios

Scientific paper

Polarization data for PSR 1957 + 20, collected at 321, 430, and 606 MHz are presented. The integrated profile of the pulsar showed that the main pulse is narrower than that of any known pulsar, with the slight broadening at 321 MHz, which is ascribed to scattering in the interstellar medium. In addition, circular polarization observations of three eclipses at 430 MHz were made in an attempt to investigate the time delay noted previously by Fruchter (1988, 1989). In plots of magnetic induction vs orbital phase, average parallel magnetic fields of about -2.7 and 0.7 gauss were found before and after the eclipse, respectively.

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