A5000312107- Geophysics and Gravity Measurements
- Astro and Planetary Science
- Planetary Science and Exploration
- Solar and Space Plasma Dynamics
- Pulsars and Gravitational Waves Research
- Ionosphere and magnetosphere dynamics
- GNSS positioning and interference
- Cosmology and Gravitation Theories
- Inertial Sensor and Navigation
- Geophysics and Sensor Technology
- Spacecraft Design and Technology
- Space Satellite Systems and Control
- Geomagnetism and Paleomagnetism Studies
- Stellar, planetary, and galactic studies
- Advanced Frequency and Time Standards
- Relativity and Gravitational Theory
- Astronomy and Astrophysical Research
- Radio Astronomy Observations and Technology
- Atomic and Subatomic Physics Research
- Astronomical Observations and Instrumentation
- Spacecraft and Cryogenic Technologies
- Space Exploration and Technology
- Experimental and Theoretical Physics Studies
- Seismic Waves and Analysis
- Dark Matter and Cosmic Phenomena
Institute for Space Astrophysics and Planetology
2015-2024
National Institute for Astrophysics
2015-2024
Istituto di Scienza e Tecnologie dell'Informazione "Alessandro Faedo"
2007-2024
Istituto Nazionale di Fisica Nucleare
2008-2024
Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
2017-2023
National Academies of Sciences, Engineering, and Medicine
2021
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2017
Istituto Nazionale di Fisica Nucleare, Sezione di Torino
2017
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2008-2014
Observatoire de la Côte d’Azur
2001-2002
The pericenter shift of a binary system represents suitable observable to test for possible deviations from the Newtonian inverse-square law in favor new weak interactions between macroscopic objects. We analyzed 13 years tracking data LAGEOS satellites with GEODYN II software but no models general relativity. From fit residuals we have been able obtain 99.8% agreement predictions Einstein's theory. This result may be considered as measurement field Earth combination {\gamma} and {\beta}...
The small satellite 'Galileo Galilei' (GG) will test the universality of free fall and hence weak equivalence principle which is founding pillar general relativity to 1 part in 1017. It use proof masses whose atoms differ substantially from one another their mass energy content, so as maximize chance violation. GG improve by four orders magnitude current best 'Eöt-Wash' tests based on slowly rotating torsion balances, have been able reach thermal noise level. In GG, expected violation signal...
The aim of this paper is to extend, clarify, and deepen the results our previous work [D. M. Lucchesi R. Peron, Phys. Rev. Lett. 105, 231103 (2010)], related precise measurement LAGEOS (LAser GEOdynamics Satellite) II pericenter shift. A 13-year time span satellites' laser tracking data has been considered, obtaining a very orbit correspondingly residuals series from which extract relevant signals. thorough description provided analysis strategy dynamical models employed, along with detailed...
The paper presents the results of an ambient vibration monitoring campaign conducted on so-called "Clock Tower" (Torre delle Ore), one best known and most visited monuments in historic centre Lucca. vibrations tower were continuously monitored from November 2017 to March 2018 using high-sensitivity instrumentation. In particular, four seismic stations provided by Istituto Nazionale di Geofisica e Vulcanologia two three-axial accelerometers developed AGI S.r.l., spin-off National Institute...
A breakdown of Lorentz Invariance is predicted by some theories as a result quantum physics applied to gravity or for the presence vector/tensor fields, beside metric tensor General Relativity, mediating gravitational interaction. violation would manifest itself, in sector, mainly through non-zero value post-Newtonian parameter $\alpha_1$, that null Relativity. In this paper we describe test Local considering effect possible preferred frame, cosmic microwave background, on orbit LAGEOS II...
The Lense - Thirring effect is a very small shift of the orbit test particle due to spin body. It may be described as an orbital drag gravitomagnetic field generated by central Gravitomagnetism, fundamental weak-field prediction Einstein's theory general relativity, currents mass and owes its name formal analogies with magnetism, electric charge. Then, according Earth's should influence motion orbiting satellites. Indeed, we have analysed laser-ranging observations orbits satellites LAGEOS...
In this work, the Laser Ranged Satellites Experiment (LARASE) is presented. This a research program that aims to perform new refined tests and measurements of gravitation in field Earth weak slow motion (WFSM) limit general relativity (GR). For objective we use free available data relative geodetic passive satellite lasers tracked from network ground stations by means laser ranging (SLR) technique. After brief introduction GR its WFSM limit, which contextualize physical background LARASE...
Recent results of the LARASE research program in terms model improvements and relativistic measurements are presented. In particular, regarding development new models for non-gravitational perturbations that affect orbit LAGEOS LARES satellites described discussed. These subtle complex effects need a deep knowledge structure physical characteristics order to be correctly accounted for. field gravitational measurements, we present measurement Lense-Thirring precession with 0.5 % precision....
Abstract ISA (Italian Spring Accelerometer) is a high sensitivity accelerometer flying, as scientific payload, on-board one of the two spacecraft (the Mercury Planetary Orbiter) BepiColombo, first ESA mission to Mercury. The commissioning phase (performed in period November 2018 - August 2019) allowed verify functionality instrument itself well related data handling and archiving system. Moreover, acceleration measurements gathered this time frame allow envisage potentiality such an...
Through the contributions of Galileo, Newton, and Einstein, we recall universality free fall (UFF), weak equivalence principle (WEP), strong (SEP), in order to stress that general relativity requires all test masses be equally accelerated a gravitational field; is, it UFF WEP hold. The possibility testing this crucial fact with null, highly sensitive experiments makes these most powerful tests theory. Following Schiff, derive redshift from special show that, as long clocks are affected by...
A new measurement of the gravitomagnetic field Earth is presented. The has been obtained through careful evaluation Lense-Thirring (LT) precession on combined orbits three passive geodetic satellites, LAGEOS, LAGEOS II, and LARES, tracked by Satellite Laser Ranging (SLR) technique. This general relativity precession, also known as frame-dragging, a manifestation spacetime curvature generated mass-currents, peculiarity Einstein’s theory gravitation. stands out, compared to previous...
This paper concerns the development of a first simplified model to take into account perturbations produced by nongravitational forces acting on satellites Galileo FOC constellation and corresponding orbital determinations within G4S_2.0 project. has series objectives in verifying gravitational interaction weak field limit theory general relativity, exploiting particular eccentricity orbits some precise measurements that can be derived from atomic clocks board these satellites. The study...
Gravitomagnetism is a fundamental, weak-field, prediction of Einstein's theory general relativity, generated by currents mass and owes its name to formal analogies with magnetism, electric charge. Then, according Earth's spin should influence the motion orbiting satellites. Indeed, we analysed laser ranging observations orbits satellites LAGEOS II obtained first direct measurement gravitomagnetic orbital perturbation due spin, known as Lense-Thirring effect.
In the original LARES mission, general relativistic Lense–Thirring effect was to be detected using as an observable sum of residuals nodes existing passive geodetic laser-ranged LAGEOS satellite and its proposed twin LARES. The nominal orbital configuration latter would reduce systematic error due mismodelling in even zonal harmonics geopotential, which is main source (to 0.3%) according most recent Earth gravity model EGM96. This turns out sensitive possible departures parameters from their...