Giovanni Pareschi
A5057249401- Astrophysical Phenomena and Observations
- Particle Detector Development and Performance
- Advanced X-ray Imaging Techniques
- Astrophysics and Cosmic Phenomena
- Adaptive optics and wavefront sensing
- Gamma-ray bursts and supernovae
- X-ray Spectroscopy and Fluorescence Analysis
- Astronomical Observations and Instrumentation
- Radiation Detection and Scintillator Technologies
- Astronomy and Astrophysical Research
- Dark Matter and Cosmic Phenomena
- Advanced Measurement and Metrology Techniques
- Advanced Surface Polishing Techniques
- Radio Astronomy Observations and Technology
- Optical Systems and Laser Technology
- Advanced X-ray and CT Imaging
- Calibration and Measurement Techniques
- Advanced Semiconductor Detectors and Materials
- Infection Control and Ventilation
- Surface Roughness and Optical Measurements
- Galaxies: Formation, Evolution, Phenomena
- Particle Accelerators and Free-Electron Lasers
- High-pressure geophysics and materials
- Nuclear Physics and Applications
- Pulsars and Gravitational Waves Research
Brera Astronomical Observatory
2015-2024
National Institute for Astrophysics
2011-2023
Agenzia Spaziale Italiana
2023
Astronomical Observatory of Rome
2023
Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
2023
Istituto di Astrofisica Spaziale e Fisica cosmica di Palermo
2022-2023
Osservatorio Astrofisico di Catania
2023
University of Perugia
2021-2023
University of Leicester
2023
GEDI Gruppo Editoriale (Italy)
2023
Abstract The potential virucidal effects of UV-C irradiation on SARS-CoV-2 were experimentally evaluated for different illumination doses and virus concentrations (1000, 5, 0.05 MOI). At a density comparable to that observed in infection, an dose just 3.7 mJ/cm 2 was sufficient achieve more than 3-log inactivation without any sign viral replication. Moreover, complete at all with 16.9 . These results could explain the epidemiological trends COVID-19 are important development novel...
XIPE, the X-ray Imaging Polarimetry Explorer, is a mission dedicated to Astronomy. At time of writing XIPE in competitive phase A as fourth medium size ESA (M4). It promises reopen polarimetry window high energy Astrophysics after more than 4 decades thanks detector that efficiently exploits photoelectric effect and optics with large effective area. uniqueness time-spectrally-spatially- resolved breakthrough astrophysics fundamental physics. Indeed payload consists three Gas Pixel Detectors...
Lynx, one of the four strategic mission concepts under study for 2020 Astrophysics Decadal Survey, provides leaps in capability over previous and planned x-ray missions synergistic observations 2030s to a multitude space- ground-based observatories across all wavelengths. Lynx orders magnitude improvement sensitivity, on-axis subarcsecond imaging with arcsecond angular resolution large field view, high-resolution spectroscopy point-like extended sources 0.2- 10-keV range. The architecture...
The High Energy X-ray Probe (HEX-P) is a proposed NASA probe-class mission that combines the power of high angular resolution with broad bandpass to provide necessary leap in capabilities address important astrophysical questions next decade. HEX-P achieves breakthrough performance by combining technologies developed experienced international partners. To meet science goals, payload consists suite co-aligned telescopes designed cover 0.2–80 keV bandpass. Telescope (HET) has an effective 2–80...
eXTP is a science mission designed to study the state of matter under extreme conditions density, gravity and magnetism. Primary goals are determination equation at supra-nuclear measurement QED effects in highly magnetized star, accretion strong-field regime gravity. targets include isolated binary neutron stars, strong magnetic field systems like magnetars, stellar-mass supermassive black holes. The carries unique unprecedented suite state-of-the-art scientific instruments enabling for...
We review the physics potential of a next generation search for solar axions: International Axion Observatory (IAXO) . Endowed with sensitivity to discover axion-like particles (ALPs) coupling photons as small gaγ∼ 10−12 GeV−1, or electrons gae∼10−13, IAXO has find QCD axion in 1 meV∼1 eV mass range where it solves strong CP problem, can account cold dark matter Universe and be responsible anomalous cooling observed number stellar systems. At same time, will have enough detect lower axions...
A bstract This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in Sun, with unprecedented sensitivity. BabyIAXO conceived test all subsystems (magnet, optics detectors) relevant scale final system thus serve as prototype IAXO, but same time fully-fledged physics reach itself, potential discovery....
Abstract Monitoring of vibrational eigenmodes an elastic body excited by gravitational waves was one the first concepts proposed for detection waves. At laboratory scale, these experiments became known as resonant bar detectors developed Joseph Weber in 1960s. Due to dimensions bars, targeted signal frequencies were kHz range. also pointed out that monitoring vibrations Earth or Moon could reveal mHz band. His Lunar Surface Gravimeter experiment deployed on Apollo 17 crew had a technical...
The ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) Project led by the Italian National Institute for Astrophysics (INAF) is developing and will deploy at Observatorio del Teide mini-array (ASTRI Mini-Array) composed of nine telescopes similar to small-size dual-mirror Schwarzschild-Couder telescope (ASTRI-Horn) currently operating on slopes Mt. Etna in Sicily. Mini-Array surpass current Cherenkov array differential sensitivity above few tera-electronvolt (TeV), extending...
The ASTRI Mini-Array (MA) is an INAF project to build and operate a facility study astronomical sources emitting at very high-energy in the TeV spectral band. MA consists of group nine innovative Imaging Atmospheric Cherenkov telescopes. telescopes will be installed Teide Astronomical Observatory Instituto de Astrofisica Canarias (IAC) Tenerife (Canary Islands, Spain) on basis host agreement with INAF. Thanks its expected overall performance, better than those current telescopes' arrays for...
We investigate the physical properties of 10 blazars at redshift greater than 2 detected in 3-years all sky survey performed by Burst Alert Telescope (BAT) onboard Swift satellite. find that jets these are among most powerful known. Furthermore, mass their central black hole, inferred from optical-UV bump, exceeds a few billions solar masses, with accretion luminosities being large fraction Eddington one. compare those brightest 3-months Large Area (LAT) Fermi BAT have more jets, luminous...
We report on the first detection of very high-energy (VHE) gamma-ray emission from Crab Nebula by a Cherenkov telescope in dual-mirror Schwarzschild-Couder (SC) configuration. The result has been achieved means 4 m size ASTRI-Horn telescope, operated Mt. Etna (Italy) and developed context Telescope Array Observatory preparatory phase. SC design is aplanatic characterized small plate scale, allowing us to implement large field view cameras with small-size pixel sensors high compactness....
A conjugate heat-transfer model is presented based on the two-population entropic lattice Boltzmann method. The present approach relies extension of Grad's boundary conditions to for thermal flows, as well appropriate exact condition imposed at fluid-solid interface. simplicity and efficiency method (LBM), in particular multirelaxation LBM, are retained approach, thus enabling simulations turbulent high Reynolds number flows complex wall boundaries. validated by means two-dimensional...
Lynx is a concept under study for prioritization in the 2020 Astrophysics Decadal Survey. Providing orders of magnitude increase sensitivity over Chandra, will examine first black holes and their galaxies, map large-scale structure galactic halos, shed new light on environments young stars planetary systems. In order to meet science goals, telescope consists high-angular resolution optical assembly complemented by an instrument suite that may include High Definition X-ray Imager,...
The potential virucidal effects of UV-C irradiation on SARS-CoV-2 were experimentally evaluated for different illumination doses and virus concentrations (1000, 5, 0.05 MOI). Both inactivation replication inhibition investigated as a function these parameters.At density comparable to that observed in infection, an dose just 3.7 mJ/cm2 was sufficient achieve 3-log inactivation,and complete all viral with 16.9 mJ/cm2. These results could explain the epidemiological trends COVID-19 are...
The potential virucidal effects of UV-C irradiation on SARS-CoV-2 were experimentally evaluated for different illumination doses and virus concentrations (1000, 5, 0.05 MOI). At a density comparable to that observed in infection, an dose just 3.7 mJ/cm 2 was sufficient achieve more than 3-log inactivation without any sign viral replication. Moreover, complete at all with 16.9 . These results could explain the epidemiological trends COVID-19 are important development novel sterilizing methods...
Solar UV$-$C photons do not reach Earth's surface, but are known to be endowed with germicidal properties that also effective on viruses. The effect of softer UV$-$B and UV$-$A photons, which copiously the viruses instead little studied, particularly single$-$stranded RNA Here we combine our measurements action spectrum Covid$-$19 in response UV light, irradiation Earth during SARS$-$CoV$-$2 pandemics, worldwide recorded mortality data 'Solar$-$Pump' diffusive model epidemics show (a)...
The ASTRI Mini–Array is currently being installed in Tenerife at the Observatorio del Teide to explore gamma-ray sky 1-100 TeV energy range with unmatched angular resolution (a few arcminutes) across a wide field of view (10.5°). array consists nine IACTs (Imaging Atmospheric Cherenkov Telescopes), each equipped 4-meter diameter dual-mirror system featuring Schwarzschild-Couder-like optical configuration, functioning as an aplanatic system, and innovative compact camera that utilizes SiPM...
Future large X-ray observatories in space will require mirrors with effective areas and long focal lengths to accomplish the proposed science. ESA programs for developing lightweight optics based on modules of silicon pore (SPO) slumped glass (SGO) were put place IXO mission (f=20m, r≈1m). To test such MPE PANTER facility has been upgraded / extended support from accommodate in-focus measurements modules. We describe extension first results obtained measuring SPO SGO during commissioning.
We performed an in-depth analysis of the virucidal effect discrete wavelengths: UV-C (278 nm), UV-B (308 UV-A (366 nm) and violet (405 on SARS-CoV-2. By using a highly infectious titer SARS-CoV-2 we observed that light-dose resulting in 2-log viral inactivation is only 10
We measure the correlation between arrival directions of highest energy cosmic rays detected by Pierre Auger Observatory with position galaxies in HI Parkes All Sky Survey (HIPASS) catalogue, weighted for their flux and exposure. The use this absorption-free complete also along galactic plane, allows us to all events. is significant, being 86.2% entire sample galaxies, becoming 99% when considering richest content, or 98% those lying 40-55. interpret result as evidence that spiral are hosts...