A5084219469- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Geophysics and Gravity Measurements
- Astrophysical Phenomena and Observations
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- High-pressure geophysics and materials
- Seismic Waves and Analysis
- Atomic and Subatomic Physics Research
- Geophysics and Sensor Technology
- Radio Astronomy Observations and Technology
- Statistical and numerical algorithms
- Glioma Diagnosis and Treatment
- Magnetic confinement fusion research
- Advanced Radiotherapy Techniques
- Management of metastatic bone disease
- Superconducting Materials and Applications
- Astronomical Observations and Instrumentation
- Advances in Oncology and Radiotherapy
- Meningioma and schwannoma management
- Radiation Therapy and Dosimetry
- Neurofibromatosis and Schwannoma Cases
- Cold Atom Physics and Bose-Einstein Condensates
- Cell Image Analysis Techniques
- Health, Environment, Cognitive Aging
Ospedale Policlinico San Martino
2024-2025
University of Genoa
2017-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2017-2023
Ente Ospedaliero Ospedali Galliera
2021-2023
Current interferometric gravitational-wave detectors are limited by quantum noise over a wide range of their measurement bandwidth. One method to overcome the limit is injection squeezed vacuum states light into interferometer's dark port. Here, we report on successful application this technology improve shot sensitivity Advanced Virgo detector. A enhancement up 3.2±0.1 dB beyond achieved. This nonclassical improvement corresponds 5%–8% increase binary neutron star horizon. The squeezing was...
Abstract We perform a statistical standard siren analysis of GW170817. Our does not utilize knowledge NGC 4993 as the unique host galaxy optical counterpart to Instead, we consider each within GW170817 localization region potential host; combining redshifts from all galaxies with distance estimate provides an Hubble constant, H 0 . Considering brighter than equally likely binary neutron star merger, find km s −1 Mpc (maximum posteriori and 68.3% highest density posterior interval; assuming...
Correlated magnetic noise from Schumann resonances threatens to contaminate the observation of a stochastic gravitational-wave background in interferometric detectors. In previous work, we reported on first effort eliminate global correlated using Wiener filtering, demonstrating as much factor two reduction coherence between magnetometers different continents. this present results dedicated magnetometer measurements at Virgo and KAGRA sites, which are for subtraction data detector sites. We...
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 August 2017, Advanced Virgo joined LIGO for the end of O2 run, leading to first gravitational waves detections with three-detector network. This paper describes calibration and wave strain h(t) reconstruction during O2. The methods are same as ones developed initial detector have already been described in previous publications, this summarizes differences emphasis is put on estimating systematic uncertainties. Three versions signal computed an online version two post-run reprocessed...
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...
Frontotemporal dementia (FTD) is a heterogeneous neurodegenerative disorder, with considerable variability of age-at-onset. We explored clinical and metabolic differences between early- late-onset behavioural FTD (bvFTD), assuming that they might represent different disease phenotypes. retrospectively studied consecutive patients diagnosed prodromal or overt bvFTD [18F]FDG PET scan, neuropsychological assessment (NPS), Neuropsychiatric Inventory (NPI) available at baseline. Patients were...
Abstract The detection of a gravitational wave signal in September 2015 by LIGO interferometers, announced jointly collaboration and Virgo February 2016, opened new era Astrophysics brought to the whole community way look at - or “listen” Universe. In this regard, next big step was joint observation with least three detectors same time. This configuration provides twofold benefit: it increases signal-to-noise ratio events means triple coincidence allows narrower pinpointing GW sources, and,...
The LIGO and the Virgo collaborations have recently announced first detections of Gravitational Waves. Due to their weak amplitude, Waves are expected produce a very small effect on free-falling masses, which undergo displacement order 10 -18 m for Km-scale mutual distance. This discovery showed that interferometric detectors suitable reveal such feeble effect, therefore represent new tool astronomy, astrophysics cosmology in understanding Universe. To better reconstruct position Wave source...
Advanced Virgo is the French–Italian second generation laser gravitational wave detector, successor of Initial Virgo. This new interferometer keeps only infrastructure its predecessor and aims to be ten times more sensitive, with first science run planned for 2017. article gives an overview design technical choices behind it. Finally, up-to-date progresses upgrade following years are detailed.
We study the electromagnetic coupling of Advanced Virgo (AdV) input mirror payload in response to a slowly time-varying magnetic field. As problem is not amenable analytical solution, we employ and validate finite element (FE) analysis approach. The FE model built represent as faithfully possible real object, it has been validated by comparison with experimental measurements. intent estimate induced currents field neighbourhood payload. procedure found 21 equivalent electrical configurations...
The Advanced Virgo (AdV) sensitivity might be influenced by the effects of environmental noise, in particular magnetic noise (MN). In order to show impact on gravitational-wave strain signal h(t) and AdV sensitivity, we must understand coupling between activity strain. relationship - measured a physical environment monitor (PEM) is investigated using injection studies, where an intentional stimulus introduced responses both PEM sensors instrument are analyzed. We also present most...
Abstract Background : 131 I‐metaiodobenzylguanidine ( I‐mIBG) effectiveness in children with metastasised neuroblastoma (NB) is linked to the effective dose absorbed by target; a target of 4 Gy whole‐body threshold has been proposed. Achieving this often requires administering I‐mIBG twice back‐to‐back, which may cause haematological toxicity. In study, we tried identifying factors predicting achievement single radiopharmaceutical administration. Materials and methods Children affected...
Abstract Background Alzheimer's disease (AD) is the most common form of dementia, predominantly manifesting as amnestic impairment. However, atypical presentations such logopenic variant primary progressive aphasia (lvPPA), posterior cortical atrophy (PCA), corticobasal syndrome (CBS) and frontal AD pose diagnostic challenges. This study presents preliminary data from a retrospective analysis investigating brain functional differences between typical forms. Specifically, structural...
Advanced Virgo is the French-Italian second generation laser gravitational wave detector, successor of Initial Virgo.This new interferometer keeps only infrastructure its predecessor and aims to be 10 times more sensitive, with first science run planned for 2017.This article gives an overview design technical choices behind it.Finally, up-to-date progresses upgrade following years are detailed.