A5038403999- Geophysics and Gravity Measurements
- Pulsars and Gravitational Waves Research
- Advanced Fiber Optic Sensors
- Cosmology and Gravitation Theories
- GNSS positioning and interference
- Particle Detector Development and Performance
- Planetary Science and Exploration
- Solar and Space Plasma Dynamics
- Astronomical Observations and Instrumentation
- Photonic and Optical Devices
- Optical measurement and interference techniques
- Structural Health Monitoring Techniques
- Relativity and Gravitational Theory
- Structural Analysis and Optimization
- Spacecraft Design and Technology
- COVID-19 epidemiological studies
- Space Satellite Systems and Control
- Advanced MEMS and NEMS Technologies
- Particle physics theoretical and experimental studies
- Inertial Sensor and Navigation
- Geophysics and Sensor Technology
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Radiation Detection and Scintillator Technologies
- Advanced Measurement and Metrology Techniques
Sapienza University of Rome
2015-2024
Enrico Fermi Center for Study and Research
2015-2017
Engineering (Italy)
2017
University of Salento
2009-2016
GFZ Helmholtz Centre for Geosciences
2009-2010
University of Maryland, Baltimore County
2009
The University of Texas at Austin
2009
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
2009
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2003-2008
We present a test of general relativity, the measurement Earth's dragging inertial frames. Our result is obtained using about 3.5 years laser-ranged observations LARES, LAGEOS, and LAGEOS 2 satellites together with Earth gravity field model GGM05S produced by space geodesy mission GRACE. measure $$\mu = (0.994 \pm 0.002) 0.05$$ , where $$ frames normalized to its relativity value, 0.002 1-sigma formal error 0.05 our preliminary estimate systematic mainly due uncertainties in GGM05S....
In this paper are presented mathematical predictions on the evolution in time of number positive cases Italy COVID-19 pandemic based official data and use a function type Gauss error function, with four parameters, as cumulative distribution function. We have analyzed available for China Italy. The diagnosed very well approximates that is, integral normal, Gaussian distribution. then used such to study potential by performing fits so far available. found statistical prediction day which peak...
A critical issue in practical structural health monitoring is related to the capability of proper sensing systems integrated within host structures detect, identify, and localize damage generation. To this aim, many techniques have been proposed involving dynamic measurements such as modal analysis, acoustic emission, ultrasonics. This paper relies on use embedded fiber Bragg grating sensors for performing an experimental analysis a wing aircraft model. Time domain response fiber-optic...
Commercially available fiber Bragg grating (FBG) sensors cannot be used for measuring cryogenic temperatures because they are made of silica the thermal expansion coefficient which tends to zero when approaching 4 K. Because many advantages optic with respect conventional ones, in this paper it is shown how circumvent such a limitation by applying proper metal coating. This approach drastically increases temperature capability FBGs at environments typically encountered application involving...
Abstract We report the improved test of frame-dragging, an intriguing phenomenon predicted by Einstein’s General Relativity, obtained using 7 years Satellite Laser Ranging (SLR) data satellite LARES (ASI, 2012) and 26 SLR LAGEOS (NASA, 1976) 2 (ASI NASA, 1992). used static part temporal variations Earth gravity field space geodesy mission GRACE (NASA DLR) in particular Earth’s model GGM05S augmented a for 7-day lowest degree spherical harmonics. orbital estimator GEODYN (NASA). measured...
Abstract LARES 2, successfully launched on July 13, 2022, is a new generation laser-ranged satellite. an acronym for LAser RElativity Satellite. The first satellite was February 2012 with the ESA-ASI-AVIO launch vehicle VEGA. 2 injected extremely high precision onto high-altitude orbit at about 5900 km altitude VEGA C. Laser-ranged satellites have many applications, including to test Einstein’s theory of general relativity. main relativistic phenomenon that will accuracy dragging inertial...
Fibre Bragg grating (FBG) sensors that are immune to electromagnetic interference could advantageously perform cryogenic temperature monitoring in superconducting magnetic fields, but their intrinsic sensitivity is quite poor and must be enhanced. In fact, the low thermal expansion coefficient of silica limits bare FBG at temperature.
The LARES (LAser RElativity Satellite) satellite was successfully launched in February 2012.The space experiment is based on the orbital determinations of laser ranged satellites LARES, LAGEOS GEOdynamics and 2 together with determination Earth's gravity field by GRACE (Gravity Recovery And Climate Experiment) mission.It will test some fundamental physics predictions provide accurate measurements framedragging effect predicted Einstein's theory General Relativity.By one hundred Monte Carlo...
LARES (LAser RElativity Satellite), is an Italian Space Agency (ASI) mission to be launched beginning of 2012 with the new European launch vehicle, VEGA; opportunity was provided by (ESA). a laser ranged satellite; it will into nearly circular orbit, altitude 1450 km and inclination 69.5 degrees. The goal measurement Lense-Thirring effect uncertainty few percent; such small achieved using data together from LAGEOS I (NASA) II (NASA ASI) satellites, because GRACE (NASA-CSR DLR-GFZ) improving...
In the present paper several finite element models suitable for delamina tion damage analysis have been used. Frequency shift diagrams modes up to 24 with severity of 15 % studied. A correlation between peaks in reporting frequency shifts vs. order mode, and extension delami nation is proposed. It also pointed out different behaviour sensitivities rela kind damage: delamination or thickness reduction. Finally cross-over phenomenon shown.
It is estimated that today several hundred operational satellites are orbiting Earth while many more either have already reentered the atmosphere or no longer operational. On 13th of February 2012 one satellite Italian Space Agency has been successfully launched. The main difference with respect to all other its extremely high density makes LARES not only densest but also known object in solar system. That implies nongravitational perturbations on surface will smallest effects orbit. Those...