S. Giarrusso
A5002204472- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Dark Matter and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Calibration and Measurement Techniques
- Atmospheric Ozone and Climate
- Radio Astronomy Observations and Technology
- Pulsars and Gravitational Waves Research
- Neutrino Physics Research
- Solar and Space Plasma Dynamics
- CCD and CMOS Imaging Sensors
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Advanced Semiconductor Detectors and Materials
- High-pressure geophysics and materials
- Astronomical Observations and Instrumentation
- Medical Imaging Techniques and Applications
- Spacecraft Design and Technology
- Advanced Optical Sensing Technologies
- Superconducting Materials and Applications
- Advanced X-ray and CT Imaging
- Infrared Target Detection Methodologies
Istituto di Astrofisica Spaziale e Fisica cosmica di Palermo
2014-2024
Osservatorio Astronomico di Padova
2023
National Institute for Astrophysics
2006-2022
Campbell Collaboration
2013
Institute for Space Astrophysics and Planetology
2013
Argonne National Laboratory
2013
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
2006
University of Turin
2005
University of Milan
1999
National Academies of Sciences, Engineering, and Medicine
1998
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...
In this paper we describe the High Pressure Gas Scintillation Proportion Counter, one of Narrow Field Instrument X–ray astronomy satellite BeppoSAX. Sensitive in 4-120 keV band, HPGSPC will study all astrophysical sources emitting poorly studied hard band. The design and performances instrument are reported together with results on–ground calibration data analysis.
The recurrent hard pulsating X-ray transient X0115+63 was observed with BeppoSAX on 1999 March 19, when the source at a 2-10 keV flux level of ~310 mcrab. We report high-energy spectrum source, concentrating cyclotron resonant scattering features. is strongly pulse phase dependent, and absorption features are detected virtually all phases. In particular, four absorption-like 12.74, 24.16, 35.74, 49.5 in descending edge main peak profile. ratios between centroid energies lines respect to...
The present work aims to address a comprehensive analytical analysis of new accurate equivalent electrical model silicon photomultiplier (SiPM) detectors. proposed circuit allows truthfully reproduce the output signal waveform generated by light sensors apart from specific technology adopted for fabrication process, and can also be profitably exploited perform reliable circuit-level simulations. A detailed in-depth investigation functional parameters involved in pulse signals is here...
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....
In this paper, the development of dual mirror Small Size Telescopes (SST) for Cherenkov Telescope Array (CTA) is reviewed. Up to 70 SST, with a primary diameter 4 m, will be produced and installed at CTA southern site. These allow investigation gamma-ray sky highest energies accessible CTA, in range from about 1 TeV 300 TeV. The telescope presented contribution characterized by two major innovations: use Schwarzschild-Couder configuration an innovative camera using as sensors either...
In the context of Cherenkov Telescope Array observatory project, ASTRI SST-2M end-to-end prototype telescope, entirely supported by Italian National Institute Astrophysics, is designed to detect cosmic primary gamma ray energies from few TeV up hundreds TeV. The camera part challenging synergy novel optical design, sensors, front-end electronics and telescope structure design. devoted imaging recording images air showers induced particles into Earth's atmosphere. order match energy range...
The Cherenkov Telescope Array (CTA) foresees, in its southern site (Chile), the implementation of up to 70 small-sized telescopes (SSTs), which will extend energy coverage hundreds TeV. It has been proposed that one first set CTA SSTs be represented by ASTRI mini-array, includes (at least) nine telescopes. endto-end prototype such telescopes, named SST-2M, is installed Italy and it now completing overall commissioning entering science verification phase. are characterized an optical system...
We used Paracentrotus lividus sea urchin embryos, a well-established model in developmental biology and ecotoxicology, for investigation on stress/anti-apoptotic protein expression elicited response to harmful ionizing radiation, such as X-rays. evaluated the acute effects of high-dose exposure (5 Gy) P. analyzing by Western blotting accumulation levels HSP60, HSP70, BAG3 putative p63 at 24 48 h after irradiation. found an increase BAG3, only irradiation, whereas no HSP60 was detected either...
There is an increasing evidence for the existence of large organic molecules in interstellar and circumstellar medium. Very few among such species are readily formed conventional gas-phase chemistry under typical conditions clouds. Attention has therefore focused on ices as a potential source these relatively complex species. Laboratory experiments show that irradiation ice analogues by fast particles or ultraviolet radiation can induce significant chemical complexity. However, stars sources...
ASTRI SST-2M is an Imaging Atmospheric Cherenkov Telescope (IACT) developed by the Italian National Institute of Astrophysics, INAF. It prototype telescopes proposed to be installed at southern site Array, CTA. The optical system based on a dual mirror configuration, innovative solution for IACTs, and focal plane camera composed silicon photo-multipliers (SiPM), recently technology light detection, that exhibit very fast response excellent single photoelectron resolution. electronics...
ASTRI is a Flagship Project financed by the Italian Ministry of Education, University and Research, led INAF, National Institute Astrophysics. The primary goal project realization an end-to-end prototype Small Size Telescope for Cherenkov Array. prototype, named SST-2M, based on completely new double mirror optics design will be equipped with camera made matrix SiPM detectors. Here we describe SST-2M concept: basic idea, detectors, electronics, current status some results coming from...
Abstract ASTRI-Horn is an Imaging Atmospheric Cherenkov Telescope characterized by a dual-mirror optical system with primary mirror diameter of 4.3 m and curved focal surface covered silicon photomultiplier (SiPM) sensors managed innovative fast front-end electronics. installed in Italy at the INAF “M.C. Fracastoro” observing station (Mount Etna, Italy); it prototype nine similar telescopes forming ASTRI MiniArray that will be Teide Astronomical Observatory, Tenerife (Canary Islands, Spain)....
The Stellar X-ray Polarimeter (SXRP) will be the third orbiting stellar x-ray polarimeter, and should provide an order of magnitude increase in polarization sensitivity over its predecessors. SXRP exploits dependence reflection from a graphite Bragg crystal scattering lithium Thomson target to measure linear x- rays astrophysical sources. In this paper, we review status instrument.
We performed 0.3 keV soft X-ray irradiation of a methanol ice at 8 K under ultra-high vacuum conditions. To the best our knowledge, this is first time that X-rays are used to study photolysis analogs. Despite low dose 10−6 photons molecule−1, formation formaldehyde has been observed. The results experiments suggest may be promising candidate complex molecules in regions where UV radiation severely inhibited.