A correlation of PSR 0329 + 54 single pulse intensity fluctuations at different mean profile longitudes

Astronomy and Astrophysics – Astronomy

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Cross Correlation, Fluctuation Theory, Pulsars, Radiant Flux Density, Radio Emission, Neutron Stars, Polar Caps, Pulsed Radiation, Radiation Distribution

Scientific paper

A crosscorrelation method is developed to analyze single pulse intensity fluctuations at different mean profile longitudes. The data of simultaneous radio-astronometrical observations of single PSR 0329 + 54 pulses obtained using the radiotelescopes of the deep space network (near Evpatoria and Ussurrijsk) at a frequency of 927 MHz are analyzed. An interpretation of the analytical results, performed within the framework of the polar cap model, suggests the presence of an unstable drift for 15-20 percent of the subpulses. It also reveals a shift in the mean-profile central component maximum with respect to the meridian connecting the rotational and magnetic poles of a neutron star.

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