First results from LARES: An analysis

Renzetti, G.

doi:10.1016/j.newast.2013.03.001

Cited by 28 publications

(22 citation statements)

References 43 publications

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“…Nowadays, laser ranging allows for a very precise determination of the orbit of the Moon and that of the geodynamic satellites, such as LAGEOS and LARES [34][35][36][37][38][39]. With this powerful experimental tool, it has been shown that the Moon recedes from the Earth at a rate of 38 mm per year as a consequence of the tidal interaction with the Earth.…”

Section: Discussionmentioning

confidence: 99%

The Flyby Anomaly in an Extended Whitehead’s Theory

Acedo

2015

Galaxies

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In this paper, we consider an extended version of Whitehead's theory of gravity in connection with the flyby anomaly. Whitehead's theory is a linear approximation defined in a background Minkowski spacetime, which gives the same solutions as standard general relativity for the Schwarzschild and Kerr metrics cast in Kerr-Schild coordinates. For a long time and because it gives the same results for the three classical tests-perihelion advance, light bending and gravitational redshift-it was considered a viable alternative to general relativity, but as it is really a linear approximation, it fails in more stringent tests. The model considered in this paper is a formal generalization of Whitehead's theory, including all possible bilinear forms. In the resulting theory, a circulating vector field of force in the low velocities' approximation for a rotating planet is deduced, in addition to Newtonian gravity. This extra force gives rise to small variations in the asymptotic velocities of flybys around the Earth to be compared to the recently reported flyby anomaly.

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Section: Discussionmentioning

confidence: 99%

The Flyby Anomaly in an Extended Whitehead’s Theory

Acedo

2015

Galaxies

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“…Attempts to measure the monopole of the gravitational potential vector with orbiting gyroscopes and satellites were performed in recent years (see, e.g., [66][67][68] and the references therein). The order of magnitude of the fourth order relativistic effect in the absolute clock observable (33) is 2 × 10 −19 , which is below the current clock accuracy.…”

Section: Orders Of Magnitudesmentioning

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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“…For instance, the famous Lense-Thirring effect (Lense and Thirring 1918), that is the precessions of the node and the periapsis of a satellite orniting a central spinning mass, has been analyzed in different contexts: there are the LAGEOS tests around the Earth (Ciufolini and Pavlis 2004; Matteo Luca Ruggiero 1 DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy INFN, Sezione di Torino, Via Pietro Giuria 1, Torino, Italy 2010a), the MGS tests around Mars (Iorio 2006a(Iorio , 2010 and other tests around the Sun and the planets (Iorio 2012a); see Ciufolini (2007); Iorio et al (2011Iorio et al ( , 2013; Renzetti (2013b) for a discussion and a review of the recent results. In February 2012 the LARES mission (Ciufolini et al 2012) has been launched to measure the Lense-Thirring effect of the Earth, and is now gathering data; a comprehensive discussion on this mission can be found in Iorio (2005Iorio ( , 2009); Renzetti (2013aRenzetti ( , 2012; Ciufolini et al (2010bCiufolini et al ( , 2015. In the recent past, the Gravity Probe B (Everitt et al 2011) mission was launched to measure the precession of orbiting gyroscopes (Pugh 1959;Schiff 1960).…”

Section: Introductionmentioning

confidence: 99%

Gravitomagnetic field of rotating rings

Ruggiero¹

2016

Astrophys Space Sci

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In the framework of the so-called gravitoelectromagnetic formalism, according to which the equations of the gravitational field can be written in analogy with classical electromagnetism, we study the gravitomagnetic field of a rotating ring, orbiting around a central body. We calculate the gravitomagnetic component of the field, both in the intermediate zone between the ring and the central body, and far away from the ring and central body. We evaluate the impact of the gravitomagnetic field on the motion of test particles and, as an application, we study the possibility of using these results, together with the Solar System ephemeris, to infer information on the spin of ring-like structures.

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First results from LARES: An analysis

Cited by 28 publications

References 43 publications

The Flyby Anomaly in an Extended Whitehead’s Theory

The Flyby Anomaly in an Extended Whitehead’s Theory

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

Gravitomagnetic field of rotating rings

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