On the (lack of) proper motion of the VELA pulsar

Details On the (lack of) proper motion of the VELA pulsar On the (lack of) proper motion of the VELA pulsar

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.273..151c&link_type=abstract

In ESA, ESA Workshop on Optical Interferometry in Space p 151-154 (SEE N88-10613 01-74)

Physics

Pulsars, Stellar Motions, Supernova Remnants, Stellar Evolution, Stellar Physics, Velocity Measurement

Scientific paper

Optical data taken in Jan. 87 compared to the discovery plate of 1975.2 show no proper motion for PSR 0833-45, while a very significant one was expected if the pulsar originated in the center of the Vela supernova remnant (SNR), until now associated with it. If such an association is to be maintained, either an extreme asymmetry of the SNR is required, or both objects are much older than so far thought. Both alternatives appear not feasible, thus possibly casting doubts on the reality of this classic SNR/pulsar association.

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