Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990azh....67..748z&link_type=abstract
Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 67, July-Aug. 1990, p. 748-756. In Russian.
Astronomy and Astrophysics
Astronomy
Electromagnetic Pulses, Pulsars, Pulse Duration, Radio Emission, Chaos, Data Reduction, Independent Variables, Signal To Noise Ratios, Time Lag
Scientific paper
The parameters of deterministic chaos in the microstructure of radio pulses of PSR 0809 + 74 were investigated by analyzing 480 single pulses of this pulsar. The pulses were recorded at 102.5 MHz with a time resolution of 10 microsec and were analyzed using the time delay technique. It is shown that, in more than 20 percent of pulses, the correlational dimension was less than five, indicating that the microstructure of radio emissions on the time scale between 10 and 100 microsec is determined by the behavior of nonlinear dynamics of the system with relatively small numbers of independent parameters. However, the results of the analysis of correlation time distribution showed that, in most cases, the predominant microstructure consisted of a random sequence of unresolved micropulses.
Popov Michail V.
Zhuravlev V. I.
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