Deep space experiment to measure
arXiv:1605.02126 · doi:10.1088/0264-9381/33/12/125013
Abstract
Responding to calls from the National Science Foundation (NSF) for new proposals to measure the gravitational constant , we offer an interesting experiment in deep space employing the classic gravity train mechanism. Our setup requires three bodies: a larger layered solid sphere with a cylindrical hole through its center, a much smaller retroreflector which will undergo harmonic motion within the hole and a host spacecraft with laser ranging capabilities to measure round trip light-times to the retroreflector but ultimately separated a significant distance away from the sphere-retroreflector apparatus. Measurements of the period of oscillation of the retroreflector in terms of host spacecraft clock time using existing technology could give determinations of nearly three orders of magnitude more accurate than current measurements here on Earth. However, significant engineering advances in the release mechanism of the apparatus from the host spacecraft will likely be necessary. Issues with regard to the stability of the system are briefly addressed.
arXiv comment13 pp, 3 figs, accepted CQG
References in corpus (20)
- The Confrontation between General Relativity and Experiment
- CODATA Recommended Values of the Fundamental Physical Constants: 2010
- Precision Measurement of the Newtonian Gravitational Constant Using Cold Atoms
- Study of the anomalous acceleration of Pioneer 10 and 11
- An accurate determination of the Avogadro constant by counting the atoms in a 28Si crystal
- Lunar laser ranging: the millimeter challenge
- Quantum Physics Exploring Gravity in the Outer Solar System: The Sagas Project
- eLISA: Astrophysics and cosmology in the millihertz regime
- Testing Theories of Gravitation Using 21-Year Timing of Pulsar Binary J1713+0747
- Detailed Calculation of Test-Mass Charging in the LISA Mission
- Measurements of Newton's gravitational constant and the length of day
- Gravitational Anomalies in the Solar System?
- Recent measurements of the gravitational constant as a function of time
- Odyssey: a Solar System Mission
- An exploration of the effectiveness of artificial mini-magnetospheres as a potential Solar Storm shelter for long term human space missions
- The Gravity Tunnel in a Non-Uniform Earth
- Millisecond and Binary Pulsars as Nature's Frequency Standards. II. Effects of Low-Frequency Timing Noise on Residuals and Measured Parameters
- Testing long-distance modifications of gravity to 100 astronomical units
- Does the Newton's gravitational constant vary sinusoidally with time? Orbital motions say no
- Astrometric Solar-System Anomalies