Pulsar Fluctuation Spectra at High Radio Frequencies

Details Pulsar Fluctuation Spectra at High Radio Frequencies Pulsar Fluctuation Spectra at High Radio Frequencies

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...19111107l&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #111.07; Bulletin of the American Astronomical Society, Vol. 29, p.1391

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Scientific paper

The fluctuation spectra of the 20 brightest pulsars observable from the nothern hemisphere have been derived from total power observations at 1.41 GHz made with the Effelsberg radiotelescope. The five strongest sources were also studied at 1.7, 4.7, and 10.5 GHz. The longitude-resolved fluctuation spectra that we present here reveal that the fluctuation behavior of pulsar emission is generally frequency independent, in good agreement with the predictions of the polar cap models for the pulsar emission. Three pulsars known to exhibit different "modes" of emission were included in our sample. Our results suggest that different modes are associated with slightly different fluctuation spectra. In the majority of the cases studied, organized fluctuations are associated with conal profile components. Core components, on the other hand, are typically characterized by white fluctuation spectra.

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