Multi-wavelength intra-peak phase separations in pulsed emissions from the Crab and the VELA pulsars

Details Multi-wavelength intra-peak phase separations in pulsed emissions from the Crab and the VELA pulsars Multi-wavelength intra-peak phase separations in pulsed emissions from the Crab and the VELA pulsars

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...284l..13r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 284, no. 1, p. L13-L15

Astronomy and Astrophysics

Astrophysics

11

Crab Nebula, Gamma Ray Spectra, Pulsars, Pulsed Radiation, Radio Spectra, Visible Spectrum, X Ray Spectra, Light Curve, Stellar Luminosity, Ultraviolet Spectra

Scientific paper

The Crab and the Vela pulsars were observed to emit pulsed radiation in the radio, optical, X-ray and gamma ray windows of the electromagnetic spectrum. In all cases the emission appears in two peaks, except in the case of radio emission from the Vela pulsar which is single peaked. With accurate peak position determinations made possible by recent observations, it is interesting to see if the intra-peak separations at various wavelengths across the electromagnetic spectrum bear any relation to each other. We report here an emerging trend of a monotonic decrease of the intra-peak separation with energy. The rate of decrease is faster in the case of the Vela pulsar than in that of the Crab pulsar. Even the case of single peaked radio emission by the Vela pulsar can be viewed as being consistent with this trend. These trends provide both an opportunity and a challenge to realistic modelings of pulsed emissions by these objects.

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