Reply to “A comment on “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth gravity model, by I. Ciufolini et al.””

Abstract In 2016, we published “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth’s gravity model. Measurement of Earth’s dragging of inertial frames [1]”, a measurement of frame-dragging, a fundamental prediction of Einstein’s theory of General Relativity, using t...

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Main Authors: Ignazio Ciufolini, Erricos C. Pavlis, John Ries, Richard Matzner, Rolf Koenig, Antonio Paolozzi, Giampiero Sindoni, Vahe Gurzadyan, Roger Penrose, Claudio Paris
Format: Article
Language:English
Published: SpringerOpen 2018-10-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-018-6303-1
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spelling doaj-43508086cfda4065aee615262eb36e6a2020-11-25T01:36:25ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-10-01781111110.1140/epjc/s10052-018-6303-1Reply to “A comment on “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth gravity model, by I. Ciufolini et al.””Ignazio Ciufolini0Erricos C. Pavlis1John Ries2Richard Matzner3Rolf Koenig4Antonio Paolozzi5Giampiero Sindoni6Vahe Gurzadyan7Roger Penrose8Claudio Paris9Dip. Ingegneria dell’Innovazione, Università del SalentoJoint Center for Earth Systems Technology (JCET), University of MarylandCenter for Space Research, University of Texas at AustinTheory Group, University of Texas at AustinHelmholtz Centre Potsdam GFZ German Research Centre for GeosciencesScuola di Ingegneria Aerospaziale, Sapienza Università di RomaScuola di Ingegneria Aerospaziale, Sapienza Università di RomaCenter for Cosmology and Astrophysics, Alikhanian National LaboratoryMathematical Institute, University of OxfordCentro Fermi-Museo Storico della Fisica e Centro Studi e Ricerche Enrico FermiAbstract In 2016, we published “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth’s gravity model. Measurement of Earth’s dragging of inertial frames [1]”, a measurement of frame-dragging, a fundamental prediction of Einstein’s theory of General Relativity, using the laser-ranged satellites LARES, LAGEOS and LAGEOS 2. The formal error, or precision, of our test was about 0.2% of frame-dragging, whereas the systematic error was estimated to be about 5%. In the 2017 paper “A comment on “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth’s gravity model by I. Ciufolini et al.”” by L. Iorio [2] (called I2017 in the following), it was incorrectly claimed that, when comparing different Earth’s gravity field models, the systematic error in our test due to the Earth’s even zonal harmonics of degree 6, 8, 10 could be as large as 15%, 6% and 36%, respectively. Furthermore, I2017 contains other, also incorrect, claims about the number of necessary significant decimal digits of the coefficients used in our test (claimed to be nine), in order to eliminate the largest uncertainties in the even zonals of degree 2 and 4, and about the non-repeatability of our test. Here we analyze and rebut those claims in I2017.http://link.springer.com/article/10.1140/epjc/s10052-018-6303-1
collection DOAJ
language English
format Article
sources DOAJ
author Ignazio Ciufolini
Erricos C. Pavlis
John Ries
Richard Matzner
Rolf Koenig
Antonio Paolozzi
Giampiero Sindoni
Vahe Gurzadyan
Roger Penrose
Claudio Paris
spellingShingle Ignazio Ciufolini
Erricos C. Pavlis
John Ries
Richard Matzner
Rolf Koenig
Antonio Paolozzi
Giampiero Sindoni
Vahe Gurzadyan
Roger Penrose
Claudio Paris
Reply to “A comment on “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth gravity model, by I. Ciufolini et al.””
European Physical Journal C: Particles and Fields
author_facet Ignazio Ciufolini
Erricos C. Pavlis
John Ries
Richard Matzner
Rolf Koenig
Antonio Paolozzi
Giampiero Sindoni
Vahe Gurzadyan
Roger Penrose
Claudio Paris
author_sort Ignazio Ciufolini
title Reply to “A comment on “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth gravity model, by I. Ciufolini et al.””
title_short Reply to “A comment on “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth gravity model, by I. Ciufolini et al.””
title_full Reply to “A comment on “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth gravity model, by I. Ciufolini et al.””
title_fullStr Reply to “A comment on “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth gravity model, by I. Ciufolini et al.””
title_full_unstemmed Reply to “A comment on “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth gravity model, by I. Ciufolini et al.””
title_sort reply to “a comment on “a test of general relativity using the lares and lageos satellites and a grace earth gravity model, by i. ciufolini et al.””
publisher SpringerOpen
series European Physical Journal C: Particles and Fields
issn 1434-6044
1434-6052
publishDate 2018-10-01
description Abstract In 2016, we published “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth’s gravity model. Measurement of Earth’s dragging of inertial frames [1]”, a measurement of frame-dragging, a fundamental prediction of Einstein’s theory of General Relativity, using the laser-ranged satellites LARES, LAGEOS and LAGEOS 2. The formal error, or precision, of our test was about 0.2% of frame-dragging, whereas the systematic error was estimated to be about 5%. In the 2017 paper “A comment on “A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth’s gravity model by I. Ciufolini et al.”” by L. Iorio [2] (called I2017 in the following), it was incorrectly claimed that, when comparing different Earth’s gravity field models, the systematic error in our test due to the Earth’s even zonal harmonics of degree 6, 8, 10 could be as large as 15%, 6% and 36%, respectively. Furthermore, I2017 contains other, also incorrect, claims about the number of necessary significant decimal digits of the coefficients used in our test (claimed to be nine), in order to eliminate the largest uncertainties in the even zonals of degree 2 and 4, and about the non-repeatability of our test. Here we analyze and rebut those claims in I2017.
url http://link.springer.com/article/10.1140/epjc/s10052-018-6303-1
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