Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69.1227s&link_type=abstract
Astronomicheskij Zhurnal (ISSN 0004-6299), vol. 69, no. 6, p. 1227-1237.
Astronomy and Astrophysics
Astronomy
Emission Spectra, Narrowband, Pulsars, Pulse Duration, Correlation Coefficients, Interstellar Matter, Radio Emission
Scientific paper
The existence of two forms (one-component and two-component) of the mean profile of the pulsar PSR 0950 + 08 was detected on the basis of simultaneous observations at 102.7 and 59.8 MGz. The two-component profiles have a spacing of the 20 ms between the components and occur in 20 percent of cases. The existence of two pulse forms is not a mode-switching phenomenon, because the form's variation is not similar at two frequencies. A narrow-band variation of the pulse form within the 640-kHz passband was detected. The decorrelation bandwidth for scintillations at 102.7 and 59.8 MHz is estimated. The narrow-band structure of a mean profile can be associated either with its own narrow-band pulsar emission, which manifests itself only at low frequencies, or with scintillations of spatially separated emission regions.
Shabanova Tatiana V.
Smirnova Tatiana V.
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