Search results for "cosmic radiation: density"

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An Indication of Anisotropy in Arrival Directions of Ultra-high-energy Cosmic Rays through Comparison to the Flux Pattern of Extragalactic Gamma-Ray …

2018

A new analysis of the dataset from the Pierre Auger Observatory provides evidence for anisotropy in the arrival directions of ultra-high-energy cosmic rays on an intermediate angular scale, which is indicative of excess arrivals from strong, nearby sources. The data consist of 5514 events above 20 EeV with zenith angles up to 80 deg recorded before 2017 April 30. Sky models have been created for two distinct populations of extragalactic gamma-ray emitters: active galactic nuclei from the second catalog of hard Fermi-LAT sources (2FHL) and starburst galaxies from a sample that was examined with Fermi-LAT. Flux-limited samples, which include all types of galaxies from the Swift-BAT and 2MASS …

Astronomy[ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph]Ciencias Físicascosmic radiation: densitygalaxies: starburstAstrophysics01 natural sciences//purl.org/becyt/ford/1 [https]methods: data analysis Supporting material: FITS fileUltra-high-energy cosmic raydata analysis [Methods]Anisotropycosmic radiation: model010303 astronomy & astrophysicscosmic rayHigh Energy Astrophysical Phenomena (astro-ph.HE)PhysicsOBSERVATÓRIOSSettore FIS/01 - Fisica SperimentaleAstrophysics::Instrumentation and Methods for Astrophysicsastroparticle physicastroparticle physics; cosmic rays; galaxies: active; galaxies: starburst; methods: data analysis Supporting material: FITS files; Astronomy and Astrophysics; Space and Planetary ScienceAugerobservatorygamma ray: emissiondata analysis Supporting material: FITS file [methods]astroparticle physicsAstrophysics - High Energy Astrophysical PhenomenaCIENCIAS NATURALES Y EXACTASAstrophysics - Cosmology and Nongalactic AstrophysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Active galactic nucleusactive [Galaxies]Astrophysics::High Energy Astrophysical Phenomenagalaxies: activeData analysisFOS: Physical sciencesStarburstCosmic rayanisotropyAstrophysics::Cosmology and Extragalactic AstrophysicsOtras Ciencias FísicasGLASTcosmic raysastroparticle physics; cosmic rays; galaxies: active; galaxies: starburst; methods: data analysis Supporting material: FITS files0103 physical sciencesHigh Energy Physicscosmic radiation: UHEAGNCosmic raysAstrophysics::Galaxy AstrophysicsZenithmethods: data analysis Supporting material: FITS filesPierre Auger ObservatorySPECTRUM010308 nuclear & particles physicsIsotropyFísicaAstronomy and Astrophysics//purl.org/becyt/ford/1.3 [https]Astronomy and Astrophysicmethods: data analysisGalaxyfluxstarburst [Galaxies]Space and Planetary ScienceExperimental High Energy PhysicsActive galaxiesgalaxyAstroparticle physics[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]statistical
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