A5087880926- Pulsars and Gravitational Waves Research
- Seismic Waves and Analysis
- Gamma-ray bursts and supernovae
- Geophysics and Sensor Technology
- Geophysics and Gravity Measurements
- Seismic Imaging and Inversion Techniques
- High-pressure geophysics and materials
- Astrophysical Phenomena and Observations
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Seismology and Earthquake Studies
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Magnetic confinement fusion research
- Statistical and numerical algorithms
- Radio Astronomy Observations and Technology
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Wind and Air Flow Studies
- Quantum Electrodynamics and Casimir Effect
- Quantum, superfluid, helium dynamics
- Multidisciplinary Science and Engineering Research
- Particle accelerators and beam dynamics
- Statistical Mechanics and Entropy
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2021-2025
The University of Tokyo
2020-2024
Ulsan National Institute of Science and Technology
2023
Kavli Institute for the Physics and Mathematics of the Universe
2022
We report correlations in underground seismic measurements with horizontal separations of several hundreds meters to a few kilometers the frequency range 0.01Hz 40Hz. These could threaten science goals planned interferometric gravitational-wave detectors such as Einstein Telescope well atom interferometers MIGA and ELGAR. use from four different sites, i.e. former Homestake mine (USA) two candidate sites for Telescope, Sos Enattos (IT) Euregio Maas-Rhein (NL-BE-DE) site housing detector,...
The third-generation instrument era is approaching, and the Einstein Telescope (ET) giant interferometer becoming a reality, with potential to be installed at an underground site where seismic noise about 100 times lower than surface. Moreover, new available technologies experience acquired from operating advanced detectors are key further extending detection bandwidth down 2–3 Hz, possibility of suspending cryogenic payload. New Generation Super-Attenuator (NGSA) R&D project aimed...
Due to its unique geophysical features and the low density population of area, Sos Enattos is a promising candidate site host Einstein Telescope (ET), third-generation Gravitational Wave Observatory. The characterization former mine, close one proposed ET corners, started in 2010 with deployment seismic environmental sensors underground. Since 2019 new extensive array seismometers, magnetometers acoustic have been installed three stations along underground tunnels, additional station at...
Abstract Seismic noise and local disturbances are dominant sources for ground-based gravitational waves detectors in the low frequency region (0.1–10 Hz) limiting their sensitivity duty cycle. With introduction of high-performance seismic isolation systems based on mechanical pendula, 2nd generation laser interferometric have reached scientific goal first direct observation GW signals thanks to extension detection bandwidth down 10 Hz. Now, 3rd instrument era is approaching, Einstein...
SUMMARY Einstein Telescope (ET) is a proposed underground infrastructure in Europe to host future generations of gravitational-wave (GW) detectors. One its design goals extend the observation band terrestrial GW detectors from currently about 20 Hz down 3 Hz. The coupling detector environment becomes stronger at lower frequencies, which makes it important carefully analyse environmental disturbances ET candidate sites. Seismic pose greatest challenge since there are several mechanisms for...
Abstract The area surrounding the dismissed mine of Sos Enattos (Sardinia, Italy) is Italian candidate site for hosting Einstein Telescope (ET), third-generation gravitational wave (GW) observatory. One goals ET to extend sensitivity down frequencies well below those currently achieved by GW detectors, i.e. 2 Hz. In bandwidth [1,10] Hz, seismic noise anthropogenic origin expected represent major perturbation operation infrastructure, and that will host future detector must fulfill stringent...
Gravitational wave detectors aim to measure relative length variations of the order ΔL/L≃10−21, or less. Thus, any mechanism that is able reproduce such a tiny variation can, in principle, threaten sensitivity these instruments, representing source noise. There are many examples noise, and seismic Newtonian noise among will be subject this review. Seismic generated by incessant ground vibration characterizes Earth. instead produced fluctuations Earth’s gravitational field. These air soil...
We present a multiple test for the targeted search of continuous gravitational waves from an ensemble known pulsars, combining multidetector single pulsar statistics defined through $5n$-vector method. In order to maximize detection probability, we describe rank truncation method select most promising sources within ensemble, based on p-values computed analysis. To efficiency our method, use Monte Carlo procedure and define p-value that is overall hypothesis wave emissions set pulsars. also...
The $5n$-vector ensemble method is a multiple test for the targeted search of continuous gravitational waves from an known pulsars. This can improve detection probability by combining results individually undetectable pulsars if few signals are near threshold. In this paper, we apply to O3 dataset LIGO and Virgo detectors considering 201 We find no evidence signal set 95% credible upper limit on mean ellipticity assuming common exponential distribution pulsars' ellipticities. Using two...
Abstract Third-generation gravitational wave observatories will extend the lower frequency limit of observation band toward 2 Hz, where new sources waves, in particular intermediate-mass black holes (IMBH), be detected. In this region, seismic noise play an important role, mainly through so-called Newtonian noise, i.e., gravity-mediated coupling between ground motion and test mass displacements. The signal lifetime such detector is order tens seconds. to determine whether a candidate site...
We report correlations in underground seismic measurements with horizontal separations of several hundreds meters to a few kilometers the frequency range 0.01 40 Hz. These could threaten science goals planned interferometric gravitational-wave detectors such as Einstein Telescope well atom interferometers MIGA and ELGAR. use from four different sites, i.e., former Homestake mine (USA) two candidate sites for Telescope, Sos Enattos (IT), Euregio Maas-Rhein (NL-BE-DE) site housing detector,...
Abstract. Wind turbines generate significant seismic noise and interfere with sensitive instruments, such as permanent temporary sensors installed nearby, hampering their detection capabilities. This study investigates the emission from one of Italy’s largest wind farms, consisting 69 (2 MW each), located in northeastern Sardinia. Characterizing this farm is particular importance due to its proximity Italian candidate site for hosting Einstein Telescope, third-generation observatory...
We describe a proof-of-principle experiment aiming to investigate the inverse-square law of gravitation at centimeter scale. The sensor is two-stage torsion pendulum, while actuation accomplished by variable liquid mass. time-varying gravitational force related level circulating fluid in one or two containers short distance from test mass, with all moving mechanical parts positioned large distance. provide description apparatus and present first results. identified systematic effect thermal...
We provide a novel methodological approach to the estimate of change Quantum Vacuum electromagnetic energy density in High critical Temperature superconducting metal bulk sample, when it undergoes transition temperature, from normal phase. The various contributions Casimir two phases are highlighted and compared. While TM polarization vacuum mode allows for macroscopic description transition, changes TE induced by superconductive correlations introduced within microscopic model, which does...