The highest velocity neutron stars establish stringent constraints on natal kicks, asymmetries in supernova core collapse, and the evolution of close binary systems. Precision astrometry campaigns with the Very Long Baseline Array yield model-independent distances and velocities to neutron stars, which we have exploited, for example, to locate neutron star birth sites and constrain the astrophysics of supernova explosions. Specifically, PSR B1508+55 has a transverse velocity of 1100+-100 km/s, the highest velocity directly measured for a neutron star. Binary disruption alone is insufficient to impart the required birth velocity. Not only is a natal kick indicated, but the extreme velocity challenges current simulations of supernova core collapse.
Tuesday, January 24th
Seminar is to be held at 4:00 PM in the conference room
on the second floor of Dearborn Observatory
Refreshments will be served at 3:30
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