History of the attempts to measure orbital frame-dragging with artificial satellites

Renzetti, G.

doi:10.2478/s11534-013-0189-1

Cited by 63 publications

(52 citation statements)

References 128 publications

(253 reference statements)

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“…Experimental data validated to high order in v/c using linearized GR [22] as in the case for gravitational wave detections, is still limited by the weak-field character of its linearized GR basis. Also note that at present the source masses and initial orbits have large uncertainties [23,24], and as we will see in this section, one family member might mimic another quite well if the source masses are are not well known. We will attempt to quantify those effects.…”

Section: Verificationmentioning

confidence: 83%

A family of metric gravities

Shuler

2018

Eur. Phys. J. Plus

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Abstract. The goal of this paper is to take a completely fresh approach to metric gravity, in which the metric principle is strictly adhered to but its properties in local space-time are derived from conservation principles, not inferred from a global field equation. The global field strength variation then gains some flexibility, but only in the regime of very strong fields (2nd-order terms) whose measurement is now being contemplated. So doing provides a family of similar gravities, differing only in strong fields, which could be developed into meaningful verification targets for strong fields after the manner in which far-field variations were used in the 20th century. General Relativity (GR) is shown to be a member of the family and this is demonstrated by deriving the Schwarzschild metric exactly from a suitable field strength assumption. The method of doing so is interesting in itself because it involves only one differential equation rather than the usual four. Exact static symmetric field solutions are also given for one pedagogical alternative based on potential, and one theoretical alternative based on inertia, and the prospects of experimentally differentiating these are analyzed. Whether the method overturns the conventional wisdom that GR is the only metric theory of gravity and that alternatives must introduce additional interactions and fields is somewhat semantical, depending on whether one views the field strength assumption as a field and whether the assumption that produces GR is considered unique in some way. It is of course possible to have other fields, and the local space-time principle can be applied to field gravities which usually are weak-field approximations having only time dilation, giving them the spatial factor and promoting them to full metric theories. Though usually pedagogical, some of them are interesting from a quantum gravity perspective. Cases are noted where mass measurement errors, or distributions of dark matter, can cause one theory to mimic another implying that such estimates or distributions should be first obtained from weakfield measurements before being used to discriminate verification candidates. By this method theorists gain insight into the local constraints on space-time, and GR verification gains strong-field comparative objectives.

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Section: Verificationmentioning

confidence: 83%

A family of metric gravities

Shuler

2018

Eur. Phys. J. Plus

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“…This has been done in particular in the context of the detection of the Lense-Thirring effect in the Solar System (see, e.g., [62,63] and the references therein).…”

Section: Ppn Metric Of An Isolated Axisymmetric Rotating Bodymentioning

confidence: 99%

Theoretical Tools for Relativistic Gravimetry, Gradiometry and Chronometric Geodesy and Application to a Parameterized Post-Newtonian Metric

Delva

Geršl

2017

Universe

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“…Of these three important effects, the Pugh-Schiff Gyroscope Effect (Pugh 1959;Schiff 1960aSchiff , 1960b has been measured to a convincing accuracy using University of Stanford's 2 Gravity Probe B Experiment (Everitt et al 2011) while the Lense-Thirring orbital precession were tentatively measured with artificial satellites orbiting some Solar system major bodies (Ginzburg 1959;Cugusi and Proverbio 1978;Ciufolini and Pavils 2004;Iorio 2006Iorio , 2009bIorio , 2010Iorio , 2012aIorio et al 2011Iorio et al , 2013Renzetti 2013aRenzetti , 2013bRenzetti , 2014. This Gravity Probe B measurement is one of the latest in a series of measurements that have confirmed the accuracy of the GTR.…”

Section: Introductionmentioning

confidence: 98%

On the secular recession of the Earth-Moon system as an azimuthal gravitational phenomenon

Nyambuya

Makwanya

Tuturu

et al. 2015

Astrophys Space Sci

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We here apply the ASTG-model to the observed secular trend in the mean Sun-(Earth-Moon) and EarthMoon distances thereby providing an alternative explanation as to what the cause of this secular trend may be. Within the margins of observational error; for the semimajor axis rate of the Earth-Moon system, in agreement with observations (of Standish and Kurtz, Proceedings IAU Colloquium, IAU, pp. 163-179, Cambridge University Press, Cambridge, 2005), we obtain a value of about +(5.10 ± 0.10) cm/yr. The ASTG-model predicts orbital drift as being a result of the orbital inclination and the Solar mass loss rate. The Newtonian gravitational constant G is assumed to be an absolute time constant. Krasinsky and Brumberg (Celest. Mech. Dyn. Astron. 90(3-4):267-288, 2004);Standish and Kurtz (2005) reported for the Earth-Moon system, an orbital recession from the Sun of about +(15.00 ± 4.00) cm/yr and +(7.00 ± 2.00) cm/yr respectively; while Williams et al. (Phys.

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History of the attempts to measure orbital frame-dragging with artificial satellites

Abstract: Abstract:An annotated guide to navigate the intricate history of the attempts to measure the Lense-Thirring orbital precessions with artificial satellites is offered to the reader.

Cited by 63 publications

References 128 publications

A family of metric gravities

A family of metric gravities

Theoretical Tools for Relativistic Gravimetry, Gradiometry and Chronometric Geodesy and Application to a Parameterized Post-Newtonian Metric

On the secular recession of the Earth-Moon system as an azimuthal gravitational phenomenon

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