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Pulsar NP 0532: Recent Results on Strong Pulses Obtained at Arecibo

Published online by Cambridge University Press:  07 February 2017

Carl Heiles  and
John M. Rankin
Carl Heiles
Affiliation:
Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa, U.S.A.
John M. Rankin
Affiliation:
Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa, U.S.A.

Abstract

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New observations have been made of strong pulses from NP 0532. Linear polarization is typically 25 per cent and circular polarization is less than 10 per cent but definitely not zero. A comparison of pulse shapes at 429.9 and 430.1 MHz showed significant differences in detailed structure and polarization. In another study strong pulses at 318 and 111 MHz did not occur together although a strong pulse at one frequency was accompanied by an above average intensity at the other frequency. Similar behaviour was found at 111 and 74 MHz. We conclude that strong pulses do not have a smooth continuous frequency spectrum.

Type
Session 2
Information
Symposium - International Astronomical Union , Volume 46: The Crab Nebula , 1971 , pp. 103 - 109
Copyright
Copyright © Reidel 1971 

References

Graham, D. A., Lyne, A. G., and Smith, F. G.: 1970, Nature 225, 526.CrossRefGoogle Scholar
Heiles, C., Campbell, D. B., and Rankin, J. M.: 1970, Nature 226, 529.CrossRefGoogle Scholar
Heiles, C., and Rankin, J. M.: 1971, submitted to Nature. Google Scholar
Rankin, J. M. and Heiles, C.: 1970, Nature 227, 1330.CrossRefGoogle Scholar
Rankin, J. M. and Heiles, C.: 1971b, submitted to Nature .Google Scholar