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The accuracy reached in the past few years by Satellite Laser Ranging (SLR) allows for measuring even tiny features of the Earth's gravitational field predicted by Einstein's General Relativity by means of artificial satellites. The…

General Relativity and Quantum Cosmology · Physics 2013-11-12 Lorenzo Iorio

In this Chapter we deal with the attempts to measure the general relativistic gravitomagnetic Lense-Thirring effect with the Satellite Laser Ranging (SLR) technique applied to the existing LAGEOS and LAGEOS II terrestrial satellites and to…

General Relativity and Quantum Cosmology · Physics 2010-07-06 Lorenzo Iorio

In this brief note some comments about the observable used in a recently published paper on the measurement of the general relativistic Lense-Thirring in the gravitational field of the Earth are presented. It turns out that, among other…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Lorenzo Iorio

Recent results of the LARASE research program in terms of models improvements and relativistic measurements are presented. In particular, the results regarding the development of new models for the non-gravitational perturbations that…

General Relativity and Quantum Cosmology · Physics 2018-09-24 David Lucchesi , Luciano Anselmo , Massimo Bassan , Carmelo Magnafico , Carmen Pardini , Roberto Peron , Giuseppe Pucacco , Ruggero Stanga , Massimo Visco

The LAGEOS 3 (today LARES 2) space experiment was proposed in the eighties by the Physics Department and by the Center of Space Research (CSR) of the University of Texas (UT) at Austin and by the Italian Space Agency (ASI) to test and…

The goal of the recently approved space-based LARES mission is to measure the general relativistic Lense-Thirring effect in the gravitational field of the spinning Earth at a repeatedly claimed 1% accuracy by combining its node Omega with…

General Relativity and Quantum Cosmology · Physics 2010-04-28 Lorenzo Iorio

The general relativistic Lense-Thirring effect can be detected by means of a suitable combination of orbital residuals of the laser-ranged LAGEOS and LAGEOS II satellites. While this observable is not affected by the orbital perturbation…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Erricos C. Pavlis , Lorenzo Iorio

Among the effects predicted by the General Theory of Relativity for the orbital motion of a test particle, the post-Newtonian gravitomagnetic Lense-Thirring effect is very interesting and, up to now, there is not yet an undisputable…

General Relativity and Quantum Cosmology · Physics 2009-05-19 Lorenzo Iorio

In two previous papers we presented the LARES 2 space experiment aimed at a very accurate test of frame-dragging and at other tests of fundamental physics and measurements of space geodesy and geodynamics. We presented the error sources of…

General Relativity and Quantum Cosmology · Physics 2019-11-15 Ignazio Ciufolini , Richard Matzner , Vahe Gurzadyan , Roger Penrose

The tiny general relativistic Lense-Thirring effect can be measured by means of a suitable combination of the orbital residuals of the nodes of LAGEOS and LAGEOS II and the perigee of LAGEOS II. This observable is affected, among other…

General Relativity and Quantum Cosmology · Physics 2013-11-12 Lorenzo Iorio , Erricos C. Pavlis

We summarize some critical issues pertaining the tests of the general relativistic Lense-Thirring effect performed by I. Ciufolini and coworkers in the gravitational field of the Earth with the geodetic satellites LAGEOS and LAGEOS II…

General Relativity and Quantum Cosmology · Physics 2011-05-24 L. Iorio

Up to now attempts to measure the general relativistic Lense-Thirring effect in the gravitational field of Earth have been performed by analyzing a suitable J_2-J_4-free combination of the nodes Omega of LAGEOS and LAGEOS II and the perigee…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Lorenzo Iorio

We present a new measurement of the Lense-Thirring effect on the orbits of the geodetic satellites LAGEOS, LAGEOS II and LARES. This secular precession is a general relativity effect produced by the gravitomagnetic field of the Earth…

General Relativity and Quantum Cosmology · Physics 2019-10-07 David M. Lucchesi , Massimo Visco , Roberto Peron , Massimo Bassan , Giuseppe Pucacco , Carmen Pardini , Luciano Anselmo , Carmelo Magnafico

We deal with the attempts to measure the Lense-Thirring effect with the Satellite Laser Ranging (SLR) technique applied to the existing LAGEOS and LAGEOS II terrestrial satellites and to the recently approved LARES spacecraft.The first…

General Relativity and Quantum Cosmology · Physics 2010-11-30 Lorenzo Iorio

The cancelation of the first even zonal harmonic coefficient J2 of the multipolar expansion of the Newtonian part of the Earth's gravitational potential from the linear combination f(2L) of the nodes of LAGEOS and LAGEOS II used in the…

General Relativity and Quantum Cosmology · Physics 2015-03-19 Lorenzo Iorio

After a brief introduction on the scientific objectives of the LARES/WEBER-SAT satellite we present the recent measurement of the Lense-Thirring effect using the nodes of the LAGEOS and LAGEOS 2 satellites and using the Earth gravity model…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Ignazio Ciufolini

In this paper we critically analyze the so far performed and proposed tests for measuring the general relativistic Lense-Thirring effect in the gravitational field of the Earth with some of the existing accurately tracked artificial…

General Relativity and Quantum Cosmology · Physics 2012-07-31 Lorenzo Iorio

We discuss the impact of the present-day uncertainties in the recently released CHAMP and/or GRACE Earth gravity models on the measurement of the Lense-Thirring effect with the nodes of the LAGEOS satellites. Also the role of the secular…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Lorenzo Iorio

In this paper we wish to preliminary investigate if it would be possible to use the orbital data from the proposed OPTIS mission together with those from the existing geodetic passive SLR LAGEOS and LAGEOS II satellites in order to perform…

General Relativity and Quantum Cosmology · Physics 2014-11-17 Lorenzo Iorio , Ignazio Ciufolini , Erricos Pavlis , Stephan Schiller , Hansjoerg Dittus , Claus Laemmerzahl

We compute the corrections to the orbital Lense-Thirring effect (or frame-dragging) in the presence of spacetime torsion. We derive the equations of motion of a test body in the gravitational field of a rotating axisymmetric massive body,…

General Relativity and Quantum Cosmology · Physics 2015-05-27 Riccardo March , Giovanni Bellettini , Roberto Tauraso , Simone Dell'Agnello