Recent results on the Crab Pulsar X-ray light curve

Details Recent results on the Crab Pulsar X-ray light curve Recent results on the Crab Pulsar X-ray light curve

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984xras.rept...12h&link_type=abstract

In its Contrib. of the X-Ray Astron. Group p 12-15 (SEE N85-20952 11-89)

Astronomy and Astrophysics

Astronomy

Crab Nebula, Light Curve, Observatories, Pulsars, X Ray Sources, Astronomical Models, Balloon-Borne Instruments, Electron-Positron Plasmas, Exosat Satellite, Plasma Pressure, Stellar Rotation, X Ray Spectra

Scientific paper

X-ray data of NP0532 from the HEXE balloon experiment and the EXOSAT observatory are presented. The ratio of second to first pulse changes systematically from optical to gamma ray wavelengths, assuming an extreme value in the hard X-ray region. The measurements are compared with a pulsar model, in which the two pulses are generated by synchrotron radiation near the last closed field lines above a single pole of a magnetized rotating neutron star. Radiation occurs in regions of magnetic instabilities near the light cylinder, where the plasma pressure overwhelms the pressure of the magnetic field. In this model excess radiation in the X-ray region within the interpulse and the second pulse might result from curvature radiation of the outstreaming e+e- plasma in the whole open magnetosphere.

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