The superdispersion delay of pulsar pulses at low frequencies

Details The superdispersion delay of pulsar pulses at low frequencies The superdispersion delay of pulsar pulses at low frequencies

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pazh...14..429s&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 14, May 1988, p. 429-437. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

4

Pulsars, Radio Astronomy, Dispersion, Pulse Duration, Time Lag

Scientific paper

The integrated pulse profiles of pulsars have been observed simultaneously at two and three frequencies in the range of 30 to 102.5 MHz. A superdispersion pulse delay was found for pulsars PSR 0834+06, 1133+16, 0823+26, 1508+55 and 1642-03 at 30 - 60 MHz relatively to the base frequency 102.5 MHz. It reaches 4°, 10°, 30° (30 MHz) , 22° (40 MHz) and 52° (60 MHz) accordingly. It was also found that phase of PSR 1133+16 profile at 30 and 40 MHz and PSR 0809+74 profile at 30 MHz undergo significant temporal variations. These results confirm the model with a twisting of magnetic field lines caused by rapid rotation of a neutron star.

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