Weighing the Milky Way

Details Weighing the Milky Way Weighing the Milky Way

2002-03-27

arxiv.org/abs/gr-qc/0203098v1

Class.Quant.Grav. 20 (2003) 2815-2826

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 1 figure

Scientific paper

10.1088/0264-9381/20/13/326

We describe an experiment to measure the mass of the Milky Way galaxy. The experiment is based on calculated light travel times along orthogonal directions in the Schwarzschild metric of the Galactic center. We show that the difference is proportional to the Galactic mass. We apply the result to light travel times in a 10cm Michelson type interferometer located on Earth. The mass of the Galactic center is shown to contribute 10^-6 to the flat space component of the metric. An experiment is proposed to measure the effect.

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