A&A Supplement series, Vol. 127, January II 1998, 153-165
Received 27 March; accepted 25 April, 1997
J. Kijak, M. Kramer, R. Wielebinski, - A. Jessner
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Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
Astronomy Centre, Pedagogical University, Lubuska 2, PL-65-265 Zielona Góra, Poland
We present pulse shapes of 87 pulsars at 4.85 GHz. Pulse widths and flux densities are measured. The frequency dependence of the profile shape and the pulse width is discussed. Our data base has been combined with other published data to generate flux spectra between 1.4 GHz and 5 GHz. The mean flux spectral index has a value -1.9. Our analysis shows that pulsar emission spectra are steeper at higher frequencies.
keywords: pulsars: general -- radiation mechanisms: miscellaneous