Physics and Astronomy
The shape of the orbit of a free particle is examined in Friedmann-Lemaître-Robertson-Walker (FLRW) cosmologies. The spatial projection of the orbit is time-independent and has a simple geometric description. We relate this description to the expression in terms of standard FLRW coordinates.
Journal of Physics Communications
Mead, L. R.,
(2018). The Shape of the Orbit in FLRW Spacetimes. Journal of Physics Communications, 2(11), 1-5.
Available at: https://aquila.usm.edu/fac_pubs/15777