Other
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.219..729s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 219, April 15, 1986, p. 729-736.
Other
44
Crab Nebula, Emission Spectra, Pulsars, Radio Spectra, Spectral Energy Distribution, Gamma Ray Spectra, Magnetic Poles, Spectral Line Width
Scientific paper
It is well known that the Crab Pulsar emits narrow beams of radiation with very similar characteristics over a very wide range of the electromagnetic spectrum, but the geometric conditions which determine the beaming have so far not been properly understood. The Vela Pulsar emits beams which are completely different in the radio and the gamma-ray spectral regions, and several authors have suggested that entirely different emission regions are involved. This note presents a unified geometrical scheme for the location of the emission regions, which applies to both pulsars. The radio emission is located close to one magnetic pole, while the gamma-ray emission is located in the field lines diverging from the other magnetic pole, at a radial distance of 0.9 of the velocity-of-light radius.
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