Search results for " Gamma-ray emission"

showing 2 items of 2 documents

Highlights from the ARGO-YBJ Experiment

2012

""The ARGO-YBJ experiment at YangBaJing in Tibet (4300m a.s.l.) has been taking data with its full layout since October 2007. Here we present a few significant results obtained in gamma-ray astronomy and cosmic-ray physics. Emphasis is placed on the analysis of gamma-ray emission from point-like sources (Crab Nebula, MRK 421), on the preliminary limit on the antiproton\\\/proton flux ratio, on the large-scale cosmic-ray anisotropy and on the proton-air cross-section. The performance of the detector is also discussed, and the perspectives of the experiment are outlined.""

HistoryAstronomyFluxAstrophysicsProton flux01 natural sciencesArgo-YbjGamma-ray emissionSettore FIS/05 - Astronomia E AstrofisicaCosmic-ray physicsResistive Plate ChambersInstrumentation010303 astronomy & astrophysicsArgoPhysicsRange (particle radiation)DetectorSettore FIS/01 - Fisica SperimentaleCrab nebulaAstrophysics::Instrumentation and Methods for AstrophysicsGamma rayCrab nebula Extensive air showers Flux ratio Gamma-ray astronomy Gamma-ray emission Ground based Resistive plate chambers; Astronomy Cosmic rays Cosmology Experiments; Gamma raysFlux ratioCosmologyComputer Science ApplicationsResistive plate chambersNuclear and High Energy PhysicsX- and γ-ray instrumentGround-based gamma-ray astronomyAstrophysics::High Energy Astrophysical PhenomenaExtensive air showerCosmic rayAstrophysics::Cosmology and Extragalactic AstrophysicsCosmic RayEducationResistive Plate Chambers Extensive air showers Ground-based g ray astronomy Cosmic-ray physicsGround-based γ-ray astronomy0103 physical sciencesExtensive air showersCosmic raysExtensive air showers X- and γ-ray instruments Pulsars. Quasars active or peculiar galaxies objects and systemsAstrophysics::Galaxy AstrophysicsGamma-ray astronomy010308 nuclear & particles physicsGamma raysAstronomyResistive Plate ChamberGround basedCrab NebulaAntiprotonResistive Plate Chambers; Extensive air showers; Ground-based γ-ray astronomy; Cosmic-ray physicsSatelliteGamma-ray burstExperimentsJournal of Physics: Conference Series
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The Corona of the Sun as a Star

2006

We study the physics of the solar corona as a whole, i.e. of the Sun as a Star, in order to understand its global features and to provide a template for stellar coronae. In this process we strive to understand the features of various structures which compose the solar corona. This process in not straightforward given the problems of observing the Sun as a whole: e.g., no recent X‐ray wide‐band, medium‐resolution, spectrum of the Sun is avaible, unlike stars and no X‐ray spectral monitoring of the Sun at various activity phases is available. The presentation will discuss our work in this field; we present the method we have devised, based on Yohkoh/SXT data, to derive the Differential Emissi…

PhysicsField (physics)Astrophysics::High Energy Astrophysical PhenomenaStellar atmosphereAstronomyA* search algorithmAstrophysicsCoronal radiative lossesCoronaCorona X-ray and gamma-ray emission X-raylaw.inventionStarsSettore FIS/05 - Astronomia E AstrofisicalawPhysics::Space PhysicsCoronal heatingAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Earth and Planetary AstrophysicsX ray spectra
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