C. Vigorito
A5036298978- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Particle Detector Development and Performance
- Radio Astronomy Observations and Technology
- Particle physics theoretical and experimental studies
- Pulsars and Gravitational Waves Research
- Astrophysical Phenomena and Observations
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Solar and Space Plasma Dynamics
- Astronomical Observations and Instrumentation
- Cosmology and Gravitation Theories
- Radiation Therapy and Dosimetry
- Nuclear Physics and Applications
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- Radioactivity and Radon Measurements
- Astronomy and Astrophysical Research
- Ionosphere and magnetosphere dynamics
- Gyrotron and Vacuum Electronics Research
- Atmospheric Ozone and Climate
- Earthquake Detection and Analysis
Istituto Nazionale di Fisica Nucleare, Sezione di Torino
2015-2024
University of Turin
2015-2024
Universitat de Barcelona
2020-2024
Institut d'Estudis Espacials de Catalunya
2024
Max Planck Institute for Physics
2021-2023
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
1998-2023
Czech Academy of Sciences, Institute of Physics
2023
Czech Academy of Sciences
2023
Tokai University
2023
Friedrich-Alexander-Universität Erlangen-Nürnberg
2023
SNEWS: the SuperNova Early Warning System, Pietro Antonioli, Richard Tresch Fienberg, Fabrice Fleurot, Yoshiyuki Fukuda, Walter Fulgione, Alec Habig, Jaret Heise, Arthur B McDonald, Corrinne Mills, Toshio Namba, Leif J Robinson, Kate Scholberg, Michael Schwendener, Roger W Sinnott, Blake Stacey, Yoichiro Suzuki, Réda Tafirout, Carlo Vigorito, Brett Viren, Clarence Virtue, Antonino Zichichi
The measurement of cosmic ray energy spectra, in particular for individual species, is an essential approach finding their origin. Locating the "knees" spectra important part and has yet to be achieved. Here we report a mixed Hydrogen Helium spectrum using combination ARGO-YBJ experiment prototype Cherenkov telescope LHAASO experiment. A knee feature at 640+/-87 TeV, with clear steepening spectrum, observed. This gives fundamental inputs galactic acceleration models.
The events recorded by ARGO-YBJ in more than five years of data collection have been analyzed to determine the diffuse gamma-ray emission Galactic plane at longitudes 25° < l 100° and latitudes . energy range covered this analysis, from ∼350 GeV ∼2 TeV, allows connection region explored Fermi with multi-TeV measurements carried out Milagro. Our analysis has focused on two selected regions plane, i.e., 40° 65° 85° (the Cygnus region), where Milagro observed an excess respect predictions...
Abstract The next core-collapse supernova in the Milky Way or its satellites will represent a once-in-a-generation opportunity to obtain detailed information about explosion of star and provide significant scientific insight for variety fields because extreme conditions found within. Supernovae our galaxy are not only rare on human timescale but also happen at unscheduled times, so it is crucial be ready use all available instruments capture possible from event. first indication potential...
The amplitude and phase of the cosmic-ray anisotropy are well established experimentally between 1011 eV 1014 eV. study their evolution in energy region 1014–1016 can provide a significant tool for understanding steepening ("knee") primary spectrum. In this Letter, we extend EAS-TOP measurement performed at E0 ≈ to higher energies by using full data set (eight years taking). Results derived about 4 × compared discussed. Hints increasing change above reported. significance observation propagation is
The ARGO-YBJ detector is an extensive air shower array that has been used to monitor the northern $\gamma$-ray sky at energies above 0.3 TeV from 2007 November 2013 January. In this paper, we present results of a survey in declination band $-10^{\circ}$ $70^{\circ}$, using data recorded over past five years. With integrated sensitivity ranging 0.24 $\sim$1 Crab units depending on declination, six sources have detected with statistical significance greater than 5 standard deviations. Several...
Measuring the anisotropy of arrival direction distribution cosmic rays provides important information on propagation mechanisms and identification their sources. In fact, flux is thought to be dependent only due presence nearby ray sources or particular magnetic-field structures. Recently, observation unexpected excesses at TeV energy down an angular scale as narrow $\ensuremath{\sim}10\ifmmode^\circ\else\textdegree\fi{}$ raised possibility that problem origin Galactic may addressed by...
This paper reports on the measurement of large-scale anisotropy in distribution cosmic-ray arrival directions using data collected by air shower detector ARGO-YBJ from 2008 January to 2009 December, during minimum solar activity between cycles 23 and 24. In this period, more than 2 × 1011 showers were recorded with energies ∼1 30 TeV. The observed two-dimensional cosmic rays is characterized two wide regions excess deficit, respectively, both relative intensity ∼10−3 respect a uniform flux,...
Cosmic rays are hampered by the Moon and a deficit in its direction is expected (the so-called shadow). The shadow an important tool to determine performance of air shower array. Indeed, westward displacement center, due bending effect geomagnetic field on propagation cosmic rays, allows setting absolute rigidity scale primary particles inducing showers recorded detector. In addition, shape permits detector point spread function, while position at high energies evaluation pointing accuracy....
ARGO-YBJ is an air shower detector array with a fully covered layer of resistive plate chambers. It operated high duty cycle and large field view. continuously monitors the northern sky at energies above 0.3 TeV. In this paper, we report long-term monitoring Mrk 421 over period from 2007 November to 2010 February. This source was observed by satellite-borne experiments Rossi X-ray Timing Explorer Swift in band. especially active first half 2008. Many flares are both γ-ray bands...
As one of the brightest active blazars in both X-ray and very high energy $\gamma$-ray bands, Mrk 501 is useful for physics associated with jets from AGNs. The ARGO-YBJ experiment monitoring it $\gamma$-rays above 0.3 TeV since November 2007. Starting October 2011 largest flare 2005 observed, which lasts to about April 2012. In this paper, a detailed analysis reported. During flaring episodes 17 22, 2011, an excess event rate over 6 $\sigma$ detected by direction 501, corresponding increase...
The extended TeV gamma-ray source ARGO J2031+4157 (or MGRO J2031+41) is positionally consistent with the Cygnus Cocoon discovered by Fermi-LAT at GeV energies in superbubble. Reanalyzing ARGO-YBJ data collected from 2007 November to 2013 January, angular extension and energy spectrum of are evaluated. After subtracting contribution overlapping sources, excess map fitted a two-dimensional Gaussian function square region 10° × 10°, finding σext= 18 ± 05. observed differential dN/dE = (2.5 0.4)...
We present an analysis of muon events with all multiplicities collected during 21804 h operation the first Large Volume Detector tower. The measured angular distribution intensity has been converted to "depth–vertical-intensity" relation in depth range from 3 12 km w.e. this allowed us derive power index γ primary all-nucleon spectrum: γ=2.78±0.05. standard rock and comparison data other experiments done. also derived vertical spectrum at sea level.Received April...
The proton-air cross section in the energy range 1--100 TeV has been measured by ARGO-YBJ cosmic ray experiment. analysis is based on primary flux attenuation for different atmospheric depths (i.e. zenith angles) and exploits detector capabilities of selecting shower development stage means hit multiplicity, density lateral profile measurements at ground. effects fluctuations, contribution heavier primaries uncertainties hadronic interaction models, have taken into account. results used to...
We report the observation of TeV gamma-rays from Cygnus region using ARGO-YBJ data collected 2007 November to 2011 August. Several sources are located in this including two bright extended MGRO J2019+37 and J2031+41. According Milagro set, at 20 is most significant source apart Crab Nebula. No signal detected by experiment, derived flux upper limits 90% confidence level for all events above 600 GeV with medium energy 3 lower than flux, implying that might be variable hard identified as a...
The ARGO-YBJ experiment detects extensive air showers in a wide energy range by means of full-coverage detector which is stable data taking its full configuration since November 2007 at the YBJ International Cosmic Ray Observatory (4300 m a.s.l., Tibet, People's Republic China). In this paper measurement light-component spectrum primary cosmic rays region $(5\textdiv{}200)\text{ }\text{ }\mathrm{TeV}$ reported. method exploited to analyze experimental based on Bayesian procedure. measured...
The ARGO-YBJ air shower detector monitored the Crab Nebula gamma ray emission from 2007 November to 2013 February. integrated signal, consisting of $\sim$3.3 $\times$ 10$^5$ events,reached statistical significance 21.1 standard deviations. obtained energy spectrum in range 0.3-20 TeV can be described by a power law function dN/dE = I$_0$ (E / 2 TeV)$^{-\alpha}$, with flux normalization (5.2 $\pm$ 0.2) 10$^{-12}$ photons cm$^{-2}$ s$^{-1}$ TeV$^{-1}$ and $\alpha$ 2.63 0.05, corresponding an...
Abstract This paper reports on the observation of sidereal large-scale anisotropy cosmic rays using data collected by ARGO-YBJ experiment over 5 years (2008–2012). analysis extends previous work limited to period from 2008 January 2009 December, near minimum solar activity between cycles 23 and 24. With new sample, cycle 24 maximum is investigated. A method used improve energy reconstruction, allowing us cover a much wider range, 4 520 TeV. Below 100 TeV, dominated two wide regions,...
In 2008, the blazar Markarian 421 entered a very active phase and was one of brightest sources in sky at TeV energies, showing frequent flaring episodes. Using data ARGO-YBJ, full coverage air shower detector located Yangbajing (4300 m a.s.l., Tibet), we monitored source gamma-ray energies E>0.3 during whole year. The observed flux variable, with strongest flares March June, correlation X-ray enhanced activity. While specific episodes could be several times larger than Crab Nebula one,...