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机译:Revisiting the birth locations of pulsars B1929+10, B2020+28, and B2021+51
Cornell Univ, Dept Astron, Ithaca, NY 14853 USA;
Curtin Univ, Int Ctr Radio Astron Res, Perth, WA 6845, Australia;
Chalmers, Onsala Space Observ, Dept Earth & Space Sci, S-43992 Onsala, SwedenJoint Inst VLBI Europe, NL-7991 PD Dwingeloo, NetherlandsMax Planck Inst Radioastron, D-53121 Bonn, Germany;
pulsars: individual: B1929+10; pulsars: individual: B2020+28; pulsars: individual: B2021+51; parallaxes; techniques: interferometric; proper motions;