Geodesics of simultaneity in Schwarzschild
arXiv:1006.4654
Abstract
Geodesic of simultaneity is a spacelike geodesic in which every pair of neighbour events are simultaneous ($g_{0μ}\dd x^μ=0$). These geodesics are studied in the exterior region of \Sch's metric.
7 pages including 4 figures, Portuguese/Esperanto version at http://www.biblioteca.cbpf.br/pub/apub/nf/2009/nf02309.pdf