0000000000225393

AUTHOR

M.d. Rodríguez-frías

showing 2 related works from this author

A search for point sources of EeV neutrons

2012

A thorough search of the sky exposed at the Pierre Auger Cosmic Ray Observatory reveals no statistically significant excess of events in any small solid angle that would be indicative of a flux of neutral particles from a discrete source. The search covers from −90◦ to +15◦ in declination using four different energy ranges above 1 EeV (1018 eV). The method used in this search is more sensitive to neutrons than to photons. The upper limit on a neutron flux is derived for a dense grid of directions for each of the four energy ranges. These results constrain scenarios for the production of ultrahigh energy cosmic rays in the Galaxy.

AstronomyEnergy fluxAstrophysics01 natural sciences7. Clean energyNeutron fluxObservatorycosmic rays – Galaxy: disk – methods: data analysisNeutron detection010303 astronomy & astrophysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Physics[SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]Gamma rayAstrophysics::Instrumentation and Methods for AstrophysicsASTRONOMYPierre Auger ObservatoryCOSMIC-RAYSRadiación cósmicaUltra High Energy Cosmic RayComputingMethodologies_DOCUMENTANDTEXTPROCESSINGMASSIVE BLACK-HOLEFísica nuclearPierre Auger Observatory high-energy neutron sources neutron flux limitAstrophysics - High Energy Astrophysical Phenomena[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]Astrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesCosmic rayGalaxiaGalaxy: diskcosmic rays0103 physical scienceshigh-energy neutron sourcesNeutronCosmic-ray observatoryCiencias ExactasANISOTROPY010308 nuclear & particles physicsGAMMA-RAYSAnálisis de datosAstronomyFísicaAstronomy and AstrophysicsASTROFÍSICAneutron flux limitmethods: data analysisNÊUTRONSSpace and Planetary ScienceUltra High Energy Cosmic RaysExperimental High Energy Physics[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]GALACTIC-CENTER
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A Targeted Search for Point Sources of EeV Neutrons

2014

A flux of neutrons from an astrophysical source in the Galaxy can be detected in the Pierre Auger Observatory as an excess of cosmic-ray air showers arriving from the direction of the source. To avoid the statistical penalty for making many trials, classes of objects are tested in combinations as nine “target sets”, in addition to the search for a neutron flux from the Galactic Center or from the Galactic Plane. Within a target set, each candidate source is weighted in proportion to its electromagnetic flux, its exposure to the Auger Observatory, and its flux attenuation factor due to neutron decay. These searches do not find evidence for a neutron flux from any class of candidate sources. …

Astrofísica[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]AstronomyAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesAstrophysics01 natural sciencesGalaxy: diskcosmic raysNeutron fluxObservatory0103 physical sciencesdata analysis [methods]Neutron010306 general physics010303 astronomy & astrophysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Pierre Auger ObservatoryPhysics[SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]Galactic CenterPierre Auger Observatory; cosmic ray; neutronsAstrophysics::Instrumentation and Methods for AstrophysicsFísicaAstronomy and AstrophysicsGalactic planemethods: data analysisMagnetic fluxGalaxyAstronomíaSpace and Planetary ScienceExperimental High Energy PhysicsComputingMethodologies_DOCUMENTANDTEXTPROCESSINGddc:520Física nuclearAstrophysics - High Energy Astrophysical Phenomenadisk [Galaxy]
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