Search results for " Gamma ray sources"

showing 3 items of 3 documents

Light-component spectrum of the primary cosmic rays in the multi-TeV region measured by the ARGO-YBJ experiment

2012

The ARGO-YBJ experiment detects extensive air showers in a wide energy range by means of a full-coverage detector which is in stable data taking in its full configuration since November 2007 at the YBJ International Cosmic Ray Observatory (4300 m a.s.l., Tibet, People's Republic of China). In this paper the measurement of the light-component spectrum of primary cosmic rays in the energy region $(5\textdiv{}200)\text{ }\text{ }\mathrm{TeV}$ is reported. The method exploited to analyze the experimental data is based on a Bayesian procedure. The measured intensities of the light component are consistent with the recent CREAM results and higher than that obtained adding the proton and helium sp…

Extended Air Showers Cosmic Rays Gamma Ray sourcesNuclear and High Energy PhysicsProtonTIBETAstrophysics::High Energy Astrophysical PhenomenaExtensive air showerchemistry.chemical_elementCosmic rayHELIUM SPECTRAAstrophysicsPROTONBayesian methodCASCADESSpectral lineSettore FIS/05 - Astronomia E AstrofisicaNuclear magnetic resonanceCosmic-ray observatoryHeliumPhysicsRange (particle radiation)ENERGY-RANGEBALLOON EXPERIMENTNUCLEISettore FIS/01 - Fisica SperimentaleDetectorAstrophysics::Instrumentation and Methods for Astrophysicslight component spectrumchemistryEnergy (signal processing)SYSTEM
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The Status of the ARGO Experiment at YBJ

2007

The ARGO-YBJ experiment, located at Yangbajing, Tibet, China, performed by a wide Sino-Italian collaboration, is designed to study cosmic rays, sub-TeV gamma ray sources and GeV Gamma Ray Burst (GRB) emission in the northern hemisphere, by means of detecting small size EAS (Extensive Air Shower) using a full coverage RPC (Resistive Plate Chamber) carpet. The central carpet of the detector is installed and put into operation to date, with 1900 m^2 of the carpet already operating since December 2004. With a trigger multiplicity of ≥60 hits, corresponding to a primary mode energy of 2 TeV, the angular resolution of EAS measurements is < 1 degree for showers with more than 500 recorded hits. We…

PhysicsNuclear and High Energy PhysicsCosmic rays gamma ray sources Gamma Ray Burst Extensive Air Shower Resistive Plate ChamberARGO-YBJAstrophysics::High Energy Astrophysical PhenomenaDetectorNorthern HemisphereGamma rayAstrophysics::Instrumentation and Methods for AstrophysicsResistive plate chamberCosmic rayAstrophysicsAstronomia gammaAtomic and Molecular Physics and OpticsSciami estesiRaggi cosmiciAir showerGamma-ray burstArgo
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The ARGO-YBJ experiment in Tibet

2008

The setting up of the ARGO detector at the YangBaJing Cosmic Ray Laboratory (4300 m a.s.l., Tibet, P.R. China) has been completed during the last spring (2007). It consists of a central carpet made of 130 identical sub-units of 12 RPCs each (a "cluster"), covering a surface of about 5800 m2 with 93% active area, and a guard ring of 24 further clusters of the same type surrounding the central carpet with a lower sampling density. Signals are picked up by external electrodes of small size, thus allowing the sampling of EAS with high space-time granularity. Shower events are detected at a trigger rate of about 4 kHz. Events with a few particles detected by a single cluster are counted in scale…

PhysicsNuclear and High Energy PhysicsGamma ray burstSingle clusterTrigger rateDetectorgamma ray bursts gamma rays cosmic rays extended air showersAstronomySampling (statistics)Cosmic rayExtended air showers Cosmic rays Gamma ray sources Gamma ray burstsGamma ray sourcesGeodesyCosmic rayGuard ringExtended air showerSampling densityInstrumentationArgoNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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