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The Polarization of the Crab Pulsar with HST

  • Joseph F. Dolan (a1), Patricia T. Boyd (a1), Robert J. Hill (a1), F. Graham-Smith (a2), A. G. Lyne (a2), James D. Biggs (a3), J. W. Percival (a4), Edward L. Robinson (a5) and G. Wayne van Citters (a6)...

Extract

The linear polarization of the Crab pulsar as a function of pulse phase was observed by the High Speed Photometer on the Hubble Space Telescope in March, 1993. Observations were obtained in a bandpass centered on 2770 A using a 0.25 ms sample time, corresponding to a time resolution of 0.0075 in pulse phase. The UV polarization of the pulsar [Fig. 1] is strikingly similar to that observed in the visible (cf. Smith et al. 1988). The same values of polarization and the same swing of position angle occur through the main and secondary pulses. The polarization pulse profile must be essentially wavelength independent at frequencies above the infrared.

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Copyright

Corresponding author

* also Universities Space Research Association
also Hughes STX Corporation

References

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Percival, J.W. et at., 1993, ApJ, 407, 276.
Smith, F.G., Jones, D.H.P., Dick, J.S.B. & Pike, C.D., 1988 MNRAS, 233, 305.
Wardle, J.F.C. & Kronberg, P.P. 1974, ApJ, 255, L1.

The Polarization of the Crab Pulsar with HST

  • Joseph F. Dolan (a1), Patricia T. Boyd (a1), Robert J. Hill (a1), F. Graham-Smith (a2), A. G. Lyne (a2), James D. Biggs (a3), J. W. Percival (a4), Edward L. Robinson (a5) and G. Wayne van Citters (a6)...

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