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NGC 2331


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The Origin and Motion of PSR J0538+2817 in S147
We report on Very Long Baseline Array (VLBA) astrometry and Chandraimaging of PSR J0538+2817 in the supernova remnant S147. We measure aparallax distance of 1.47+0.42-0.27 kpc along witha high-precision proper motion, giving a transverse velocityV⊥=400+114-73 km s-1. Asmall extended wind nebula is detected around the pulsar; the symmetryaxis of this structure suggests that the spin axis lies12deg+/-4deg from the velocity vector(two-dimensional), but the emission is too faint for robustmodel-independent statements. The neutron star is hot, consistent withthe young ~40 kyr kinematic age. The pulsar progenitor is likely arunaway from a nearby cluster, with NGC 1960 (M36) a leading candidate.

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Observation and Astrometry data

Constellation:ふたご座
Right ascension:07h07m12.00s
Declination:+27°21'00.0"
Apparent magnitude:9

Catalogs and designations:
Proper Names   (Edit)
NGC 2000.0NGC 2331

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