A5009950098- Pulsars and Gravitational Waves Research
- Geophysics and Gravity Measurements
- Gamma-ray bursts and supernovae
- Geophysics and Sensor Technology
- Cosmology and Gravitation Theories
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Seismic Waves and Analysis
- Advanced Frequency and Time Standards
- Quantum Chromodynamics and Particle Interactions
- High-pressure geophysics and materials
- Seismology and Earthquake Studies
- Theoretical and Computational Physics
- Astronomical Observations and Instrumentation
- Statistical and numerical algorithms
- Cold Atom Physics and Bose-Einstein Condensates
- Radio Astronomy Observations and Technology
- Superconducting Materials and Applications
- Quantum chaos and dynamical systems
- Magnetic confinement fusion research
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Earthquake Detection and Analysis
- Meteorological Phenomena and Simulations
- GNSS positioning and interference
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2013-2024
Université Paris-Saclay
2019-2021
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2019-2021
CEA Paris-Saclay
2019-2021
Université Savoie Mont Blanc
2019-2021
Université Grenoble Alpes
2019-2021
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
2019-2021
University of Trieste
2019-2021
Brera Astronomical Observatory
2019-2021
Istituto Nazionale di Fisica Nucleare
1994-2021
Abstract We propose in this White Paper a concept for space experiment using cold atoms to search ultra-light dark matter, and detect gravitational waves the frequency range between most sensitive ranges of LISA terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment Dark Matter Gravity Exploration (AEDGE), will also complement other planned searches exploit synergies with wave detectors. give examples extended sensitivity matter offered...
Abstract The Advanced Virgo detector has contributed with its data to the rapid growth of number detected GW signals in past few years, alongside two LIGO instruments. First during last month Observation Run 2 (O2) August 2017 (with, most notably, compact binary mergers GW170814 and GW170817), then full 3 (O3): an 11 months taking period, between April 2019 March 2020, that led addition 79 events catalog transient sources maintained by LIGO, now KAGRA. These discoveries manifold exploitation...
Abstract The three advanced Virgo and LIGO gravitational wave detectors participated to the third observing run (O3) between 1 April 2019 15:00 UTC 27 March 2020 17:00 UTC, leading several detections per month. This paper describes detector calibration reconstruction of strain h ( t ) during O3, as well estimation associated uncertainties. For first time, photon technique been used reference for calibration, which allowed cross-calibrate amplitude detectors. previous reference, so-called...
In this Letter, we present the design and performance of frequency-dependent squeezed vacuum source that will be used for broadband quantum noise reduction Advanced Virgo Plus gravitational-wave detector in upcoming observation run. The field is generated by a phase rotation frequency-independent state through 285 m long, high-finesse, near-detuned optical resonator. With about 8.5 dB squeezing, up to 5.6 suppression has been measured at high frequency while close filter cavity resonance...
The quantum radiation pressure and the shot noise in laser-interferometric gravitational wave detectors constitute a macroscopic manifestation of Heisenberg inequality. If can be easily observed, observation has been elusive, so far, due to technical competing with effects. Here, we discuss evidence Advanced Virgo detector. In our experiment, inject squeezed vacuum states light into interferometer order manipulate backaction on 42 kg mirrors observe corresponding driven displacement at...
Sources of geophysical noise (such as wind, sea waves and earthquakes) or anthropogenic impact ground-based gravitational-wave interferometric detectors, causing transient sensitivity worsening gaps in data taking. During the one year-long third Observing Run (O3: from April 01, 2019 to March 27, 2020), Virgo Collaboration collected a statistically significant dataset, used this article study response detector variety environmental conditions. We correlated parameters global performance,...
We describe a novel approach to the detection and parameter estimation of non-Gaussian stochastic background gravitational waves. The method is based on determination relevant statistical parameters using importance sampling. show that it possible improve Gaussian statistics by simulating realizations expected signal for given model. While computationally expensive, our improves performance, leveraging prior knowledge signal, can be used in natural way extract physical information about...
The next generation gravitational wave interferometric detectors will likely be underground to extend the GW detection frequency band frequencies below Newtonian noise limit. originates from continuous motion of Earth's crust driven by human activity, tidal stresses and seismic motion, mass density fluctuations in atmosphere. It is calculated that on surface, a typical day, it exceed expected signals at 10 Hz. decrease an unknown amount. important investigate quantify this reduction its...
Detector characterization and data quality studies -- collectively referred to as {\em DetChar} activities in this article are paramount the scientific exploitation of joint dataset collected by LIGO-Virgo-KAGRA global network ground-based gravitational-wave (GW) detectors. They take place during each phase operation instruments (upgrade, tuning optimization, taking), required at all steps dataflow (from acquisition final list GW events) operate various latencies near real-time vet public...
Abstract While completing the commissioning phase to prepare Virgo interferometer for next joint Observation Run (O4), collaboration is also finalizing design of upgrades detector be employed in following (O5). The major upgrade will concern decreasing thermal noise limit, which imply using very large test masses and increased laser beam size. But this not only implemented break between O4 O5 observation runs increase strain sensitivity. paper cover challenges linked implications on...
A direct detection of gravitational waves is still lacking today. network several earthbound interferometric detectors currently operating with a continuously improving sensitivity. The window interest for observation has lower cut off in the frequency domain below some tens hertz, determined by effect seismic motion. For larger frequencies, sensitivity limited thermal effects few hundreds hertz and quantum nature light above that value. Each these sources noise pose big technological...
In a recent paper we described novel approach to the detection and parameter estimation of non-Gaussian stochastic background gravitational waves. this work propose an improved version procedure, preserving robustness against imperfect noise knowledge at no cost performance; in previous approach, solution proposed ensure reduced performances statistics, which some cases (namely, mild non-Gaussianity) could be outperformed by Gaussian ones established literature. We show, through simple toy...
Einstein gravitational-wave Telescope (ET) is a design study funded by the European Commission to explore technological challenges of and scientific benefits from building third generation gravitational wave detector. The three-year study, which concluded earlier this year, has formulated conceptual an observatory that can support implementation new technology for next two three decades. goal talk introduce audience overall aims objectives project enumerate ET's potential influence our...
The two most important issues in designing future gravitational wave interferometric detectors are, our opinion, thermal and optical noise. In this paper we discuss some approaches for reducing these noises. About noise show a possible cryogenic solution. (namely, the combined effect of shot radiation pressure noise) that it is to apply recently proposed reduction strategy based on 'quantum feedback' (Courty et al 2003 Phys. Rev. Lett. 90 083601; Courty Preprint gr-qc/0301068) full...