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Getting Its Kicks: A VLBA Parallax for the Hyperfast Pulsar B1508+55
The highest velocity neutron stars establish stringent constraints on natal kicks, asymmetries in supernova core collapse, and the evolution of close binary systems. Here we present the first results of a long-term pulsar astrometry program using the VLBA. We measure a proper motion and parallax for the pulsar B1508+55, leading to model-independent estimates of its distance (2.37+0.23-0.20 kpc) and transverse velocity (1083+103-90 km/s), the highest velocity directly measured for a neutrondoi:10.1086/491701 fatcat:l5fm7xz7hresrgjddb6bueavz4