Search results for "Large scale anisotripies"

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Search for First Harmonic Modulation in the Right Ascension Distribution of Cosmic Rays Detected at the Pierre Auger Observatory

2011

We present the results of searches for dipolar-type anisotropies in different energy ranges above 2.5 × 1017 eV with the surface detector array of the Pierre Auger Observatory, reporting on both the phase and the amplitude measurements of the first harmonic modulation in the right-ascension distribution. Upper limits on the amplitudes are obtained, which provide the most stringent bounds at present, being below 2% at 99% C.L. for EeV energies. We also compare our results to those of previous experiments as well as with some theoretical expectations.

Large scale anisotripies[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]Auger ExperimentAstronomyAstrophysics::High Energy Astrophysical PhenomenaPhase (waves)FOS: Physical sciencesCosmic rayAstrophysicsanisotropySURFACE DETECTOR01 natural sciencesCosmic RayAugerLarge scale anisotropiesObservatoryLarge scale anisotropie0103 physical sciences010303 astronomy & astrophysicsUltra-high energy cosmic rayCiencias ExactasHigh Energy Astrophysical Phenomena (astro-ph.HE)PhysicsPierre Auger ObservatoryFÍSICA DE PARTÍCULASUltra High Energy Cosmic Rays.010308 nuclear & particles physicsORIGINPhysics[SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]Astrophysics::Instrumentation and Methods for AstrophysicsFísicaAstronomy and AstrophysicsPierre Auger ObservatoryUltra-high energy cosmic raysENERGY-SPECTRUMRadiación cósmicaAnisotropíaAmplitudeHarmonicsUltra-high energy cosmic rays; Large scale anisotropies; Pierre Auger ObservatoryExperimental High Energy PhysicsComputingMethodologies_DOCUMENTANDTEXTPROCESSINGARRAYFísica nuclearRight ascensionAstrophysics - High Energy Astrophysical Phenomena
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