The influence of the cosmological expansion on local systems

Details The influence of the cosmological expansion on local systems The influence of the cosmological expansion on local systems

1998-03-09

arxiv.org/abs/astro-ph/9803097v1

Astrophys.J. 503 (1998) 61

Astronomy and Astrophysics

Astrophysics

To appear in the Astrophysical Journal, Latex

Scientific paper

10.1086/305956

Following renewed interest, the problem of whether the cosmological expansion affects the dynamics of local systems is reconsidered. The cosmological correction to the equations of motion in the locally inertial Fermi normal frame (the relevant frame for astronomical observations) is computed. The evolution equations for the cosmological perturbation of the two--body problem are solved in this frame. The effect on the orbit is insignificant as are the effects on the galactic and galactic--cluster scales.

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