A5108046298- Astronomy and Astrophysical Research
- Astrophysics and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Adaptive optics and wavefront sensing
- Astronomical Observations and Instrumentation
- CCD and CMOS Imaging Sensors
- Radio Astronomy Observations and Technology
- Gamma-ray bursts and supernovae
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Astrophysics and Star Formation Studies
- Atmospheric Ozone and Climate
- Infrared Target Detection Methodologies
- Spectroscopy and Laser Applications
- Parallel Computing and Optimization Techniques
- Astro and Planetary Science
- Solar and Space Plasma Dynamics
- Calibration and Measurement Techniques
- Engineering and Test Systems
- Numerical Methods and Algorithms
- Spacecraft Design and Technology
- Advanced Measurement and Detection Methods
- Neutrino Physics Research
Osservatorio Astrofisico di Catania
2010-2024
Osservatorio Astronomico di Padova
2022
Istituto di Astrofisica Spaziale e Fisica cosmica di Palermo
2022
National Institute for Astrophysics
2013-2021
Université Paris Sciences et Lettres
2019
Centre National de la Recherche Scientifique
2019
Galaxies, Etoiles, Physique et Instrumentation
2019
Campbell Collaboration
2013
Institute for Space Astrophysics and Planetology
2013
Universidade do Vale do Paraíba
2013
We provide an updated assessment of the power Cherenkov Telescope Array (CTA) to search for thermally produced dark matter at TeV scale, via associated gamma-ray signal from pair-annihilating particles in region around Galactic centre. find that CTA will open a new window discovery potential, significantly extending range robustly testable models given standard cuspy profile density distribution. Importantly, even cored profile, projected sensitivity be sufficient probe various...
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 present an analysis of high-dispersion spectra (R ∼ 40,000) three red clump stars in the old open cluster NGC 6819. The were obtained with SARG, spectrograph Telescopio Nazionale Galileo. analyzed using both equivalent widths measured automatic procedure and comparisons synthetic spectra. 6819 is found to be slightly metal-rich ([Fe/H] = +0.09 ± 0.03, internal error); there are no previous high-resolution studies compare. Most element-to-element abundance ratios close solar; we find a...
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...
GIANO is a high resolution (R50,000) IR spectrograph which provides quasi-complete coverage of the 0.95- 2.5μm wavelengths range in single exposure. The instrument was integrated and tested Arcetri-INAF (Florence, Italy) will be commisioned at 3.58m TNG Italian telescope La Palma. major scientific goals include search for rocky planets with habitable conditions around low-mass stars, quantitative spectroscopy brown dwarfs, accurate chemical abundances metallicity stars stellar clusters. This...
Aims. The inner disk of the Galaxy has a number young star clusters dominated by red supergiants that are heavily obscured dust extinction and observable only at infrared wavelengths. These important tracers recent formation chemical enrichment history in Galaxy.
ABSTRACT The Catania Astrophysical Observatory Spectropolarimeter (CAOS) is a white-pupil cross-dispersed échelle spectrograph with spectral resolution of up to R = 55,000 in the 375–1100 nm range single exposure, complete coverage 856 nm. CAOS linked 36-inch telescope, at Mount Etna Observatory, couple 100 μ m optical fibers and it achieves signal-to-noise ratio better than 60 for V 10 mag star one hour. thermally stabilized temperature within 0.01 K rms, so that radial velocities are...
A stellar occultation by Neptune's main satellite, Triton, was observed on 5 October 2017 from Europe, North Africa, and the USA. We derived 90 light curves this event, 42 of which yielded a central flash detection. aimed at constraining Triton's atmospheric structure seasonal variations its pressure since Voyager 2 epoch (1989). also shape lower atmosphere analysis. used Abel inversions direct ray-tracing code to provide density, pressure, temperature profiles in altitude range $\sim$8 km...
GIANO is an infrared (0.9-2.5 <i>μ</i>m cross-dispersed echelle spectrometer designed to achieve high resolution, throughput, wide band coverage and very stability for accurate radial velocity measurements. It also includes polarimetric capabilities a low resolution mode with <i>RS</i> ~ 400 complete 0.75-2.5 coverage. This makes it versatile, common user instrument which will be permanently mounted available on the Nasmyth-B foci of Telescopio Nazionale Galileo (TNG) located at Roque...
The ASTRI Mini-Array is a next-generation system of nine imaging atmospheric Cherenkov telescopes that going to be built at the Observatorio del Teide site. After first phase, in which instrument will operated as an experiment prioritizing schedule primary science cases, observatory phase foreseen other significant targets pointed. We focus on observational feasibility extragalactic sources and astrophysical processes best complement expand core science, presenting most relevant examples are...
The ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) Mini-Array will be composed of nine imaging atmospheric Cherenkov telescopes at the Observatorio del Teide site. array best suited for astrophysical observations in 0.3–200 TeV range with an angular resolution few arc-minutes and energy 10-15%. A core-science programme first four years devoted to limited number key targets, addressing most important open scientific questions very-high domain. At same time, thanks wide field...
A flux-calibrated high resolution spectrum of the airglow emission is a practical lambda-calibration reference for astronomical spectral observations. It also useful constraining molecular parameters OH molecule and physical conditions in upper mesosphere. methods: We use data collected during first technical commissioning GIANO spectrograph at Telescopio Nazionale Galileo (TNG). The (R~50,000) simultaneously covers 0.95-2.4 micron wavelength range. Relative flux calibration achieved by...
Abstract We describe a new polarimetric facility available at the Istituto Nazionale di AstroFisica / Telescopio Galileo La Palma, Canary islands. This facility, PAOLO (Polarimetric Add‐On for LRS Optics), is located Nasmyth focus of an alt‐az telescope and requires specific modeling in order to remove time‐ pointing position‐dependent instrumental polarization. also opto‐mechanical structure instrument its calibration present early examples applications. (© 2014 WILEY‐VCH Verlag GmbH &...
The Astrophysics with Italian Replicating Technology Mirrors (ASTRI) Mini-Array is an international collaboration led by the National Institute for (INAF) and devoted to imaging atmospheric Cherenkov light very-high γ-ray astrophysics, detection of cosmic-rays, stellar Hambury-Brown intensity interferometry. project deploying array nine dual-mirror aplanatic telescopes 4-m class at Teide Observatory on Tenerife in Canary Islands. Based SiPM sensors, focal plane camera covers unprecedented...
ASTRI is a Flagship Project led by the Italian National Institute of Astrophysics, INAF. The main objective project to develop prototype Small Size class Telescope for Cherenkov Array (CTA) in dual-mirror configuration (SST-2M). SST-2M an end-to-end that will be fully developed Collaboration from optics design and manufacturing focal plane camera, structure mount all needed software. placed at INAF "M.G. Fracastoro" observing station Serra La Nave on Etna Mountain near Catania, Italy....
Abstract UVscope is an instrument, based on a multi-pixel photon detector, developed to support experimental activities for high-energy astrophysics and cosmic ray research. The working in single counting mode, designed directly measure light flux the wavelengths range 300-650 nm. instrument can be used wide field of applications where knowledge nocturnal environmental luminosity required. Currently, one allocated onto external structure ASTRI-Horn Cherenkov telescope devoted gamma-ray...