A5060798890- Geophysics and Gravity Measurements
- Planetary Science and Exploration
- Astro and Planetary Science
- Solar and Space Plasma Dynamics
- Pulsars and Gravitational Waves Research
- Ionosphere and magnetosphere dynamics
- Cosmology and Gravitation Theories
- GNSS positioning and interference
- Spacecraft Design and Technology
- Inertial Sensor and Navigation
- Space Satellite Systems and Control
- Geophysics and Sensor Technology
- Space Exploration and Technology
- Geomagnetism and Paleomagnetism Studies
- Spacecraft and Cryogenic Technologies
- Stellar, planetary, and galactic studies
- Space Science and Extraterrestrial Life
- Atomic and Subatomic Physics Research
- Radio Astronomy Observations and Technology
- Dark Matter and Cosmic Phenomena
- Advanced Frequency and Time Standards
- Particle Detector Development and Performance
- Relativity and Gravitational Theory
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
National Institute for Astrophysics
2014-2024
Istituto Nazionale di Fisica Nucleare
2014-2024
Institute for Space Astrophysics and Planetology
2015-2024
Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
2014-2021
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2014-2017
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
2004-2006
Sapienza University of Rome
2002
Centre National de la Recherche Scientifique
1999
Abstract The dual spacecraft mission BepiColombo is the first joint between European Space Agency (ESA) and Japanese Aerospace Exploration (JAXA) to explore planet Mercury. was launched from Kourou (French Guiana) on October 20th, 2018, in its packed configuration including two spacecraft, a transfer module, sunshield. cruise trajectory long journey into inner heliosphere, it includes one flyby of Earth (in April 2020), Venus 2020 August 2021), six Mercury (starting before orbit insertion...
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 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...
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...
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...
This paper introduces the main problems related to modeling of effects nongravitational perturbations on satellites Galileo FOC constellation. The problem is addressed from point view scientific objectives for Science (G4S_2.0) project. These are reflected in a set fundamental physics measurements that will exploit orbits and atomic clocks aboard satellites, particular GSAT-0201 GSAT-0202 characterized by elliptical orbits, not almost circular such as case remaining focus direct solar...
We deal here with the combination of satellites' orbital residuals time series used to estimate relativistic effects and at same overcome some systematics. In a recent paper by Lorenzo Iorio, it is argued about significant contribution error budget Lense–Thirring effect measurement performed combining LAGEOS II data, considering as well possible future using also LARES data. show here, proper interpretation formulas, that this indeed negligible.
LARASE represents a new experiment whose main goal is to provide accurate measurements for the gravitational interaction in weak field and slow motion limit by means of laser tracking satellites orbiting around Earth. Among various ingredients needed, two them play very significant role: i) quality observations orbit, ii) dynamical models implemented software code minimize, opportunely, an observable function solve unknowns which we are interested. Indeed, these have account both...
The spacetime around Earth is a good environment in order to perform tests of gravitational theories. According Einstein’s view phenomena, the mass-energy content curves surrounding peculiar way. This (relatively) quiet dynamical enables reconstruction geodetic satellites (test masses) orbit, provided that high-quality tracking data are available. case LAGEOS satellites, built and launched mainly for geodynamical purposes, but equally fundamental physics studies. A review these studies...