0000000001091802

AUTHOR

Alberto Segreto

showing 5 related works from this author

Swift-BAT hard X-ray sky monitoring unveils the orbital period of the HMXB IGR J18219-1347

2013

IGR J18219-1347 is a hard X-ray source discovered by INTEGRAL in 2010. We have analyzed the X-ray emission of this source exploiting the BAT survey data up to March 2012 and the XRT data that include also an observing campaign performed in early 2012. The source is detected at a significance level of ~14 standard deviations in the 88-month BAT survey data, and shows a strong variability along the survey monitoring, going from high intensity to quiescent states. A timing analysis on the BAT data revealed an intensity modulation with a period of 72.46 days. The significance of this modulation is about 7 standard deviations in Gaussian statistics. We interpret it as the orbital period of the b…

PhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Be starmedia_common.quotation_subjectAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsOrbital periodLight curveStandard deviationlaw.inventionTelescopeOrbitSpace and Planetary ScienceSkylawAstrophysics - High Energy Astrophysical PhenomenaIntensity modulationmedia_common
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Measurement of the radiation energy in the radio signal of extensive air showers as a universal estimator of cosmic-ray energy

2016

We measure the energy emitted by extensive air showers in the form of radio emission in the frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of the Pierre Auger Observatory, we obtain a radiation energy of 15.8±0.7(stat)±6.7(syst) MeV for cosmic rays with an energy of 1 EeV arriving perpendicularly to a geomagnetic field of 0.24 G, scaling quadratically with the cosmic-ray energy. A comparison with predictions from state-of-the-art first-principles calculations shows agreement with our measurement. The radiation energy provides direct access to the calorimetric energy in the electromagnetic cascade of extensive air showers. Comparison with our result thus allows the d…

Ciencias FísicasAstronomyGeneral Physics and Astronomyultra-high energy cosmic raysAstrophysics01 natural sciencesHigh Energy Physics - Experiment//purl.org/becyt/ford/1 [https]High Energy Physics - Experiment (hep-ex)CODALEMAObservatory[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]GeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)High Energy Astrophysical Phenomena (astro-ph.HE)PhysicsRange (particle radiation)Radio detectorTUNKA-REXSettore FIS/01 - Fisica SperimentaleDetectorAstrophysics::Instrumentation and Methods for AstrophysicsRadio TechniqueFísica nuclearAstrophysics - High Energy Astrophysical PhenomenaAstrophysics - Instrumentation and Methods for Astrophysicsradio emissionCIENCIAS NATURALES Y EXACTASRadio wave[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE][PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]Astrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesCosmic rayAstrophysics::Cosmology and Extragalactic AstrophysicsPhysics and Astronomy (all)0103 physical sciencesextensive air showersHigh Energy Physicsultra-high energy cosmic rays extensive air showers radio emission010306 general physicsInstrumentation and Methods for Astrophysics (astro-ph.IM)Cosmic raysPierre Auger Observatory010308 nuclear & particles physicsRadiant energyFísicaLOFAR//purl.org/becyt/ford/1.3 [https]LOFARASTROFÍSICASIMULATIONSComputational physicsAstronomíaCOREASExperimental High Energy PhysicsARRAYEMISSION SIMULATIONS LOFAR.EMISSION
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Design and implementation of the AMIGA embedded system for data acquisition

2021

The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and admin-istrative staff in Malargtie. We are very grateful to the following agencies and organizations for financial support: Comision Nacional de Energla Atomica, Agencia Nacional de Promocion Cientffica y Tec-nologica (ANPCyT) , Consejo Nacional de Investigaciones Cientfficas y Tecnicas (CONICET) , Gobierno de la Provincia de Mendoza, Municipalidad de Malargtie, NDM Holdings and Valle Las Leilas, in gratitude for their continuing cooperation over land access, Argentina; the Australian Research Council; Conselho…

muon: showersDetector control systems (detector and experiment monitoring and slow-control systems architecture hardware algorithms databases)Physics::Instrumentation and Detectorsdata acquisitionAstronomycosmic radiation: electromagnetic componentengineeringprimary [cosmic radiation]Particle detectors01 natural sciencesenergy: thresholdData acquisition concepthardwareInstrumentationMathematical Physicsshowers [muon]media_commonHigh Energy Astrophysical Phenomena (astro-ph.HE)astro-ph.HEControl and monitor systems onlinePhysicsSettore FIS/01 - Fisica SperimentaleAstrophysics::Instrumentation and Methods for Astrophysicsthreshold [energy]16. Peace & justiceAugerelectromagnetic component [cosmic radiation]observatoryDetector control systems (detector andexperiment monitoring and slow-control systemslanguageupgradeAstrophysics - Instrumentation and Methods for AstrophysicsAstrophysics - High Energy Astrophysical Phenomenadatabases)atmosphere [showers]Land accessarchitectureEuropean communityairAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesalgorithmsPolitical science0103 physical sciencesmedia_common.cataloged_instanceddc:530High Energy Physics[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]ddc:610Control and monitor systems online; Data acquisition concepts; Detector control systems (detector and experiment monitoring and slow-control systems architecture hardware algorithms databases); Particle detectorsEuropean union010306 general physicsInstrumentation and Methods for Astrophysics (astro-ph.IM)Ciencias Exactasscintillation countershowers: atmosphere010308 nuclear & particles physicsDetector control systems (detector and experiment monitoring and slow-control systemsData acquisition conceptsFísicastabilitylanguage.human_languagecosmic radiation: primarymonitoringResearch councilExperimental High Energy PhysicsHigh Energy Physics::ExperimentControl and monitor systems on-linePortuguese[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]HumanitiesRAIOS CÓSMICOSastro-ph.IM
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Testing effects of Lorentz invariance violation in the propagation of astroparticles with the Pierre Auger Observatory

2021

The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargüe. We are very grateful to the following agencies and organizations for financial support: Argentina — Comisión Nacional de Energía Atómica; Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Gobierno de la Provincia de Mendoza; Municipalidad de Malargüe; NDM Holdings and Valle Las Leñas; in gratitude for their continuing cooperation over land access; Australia — the Australian Research Council; Be…

interaction [cosmic radiation]mass spectrum [cosmic radiation]dispersion relationAstronomyAstrophysics::High Energy Astrophysical Phenomenaenergy spectrumcosmic ray experimentFOS: Physical sciencesultra high energy cosmic rayscosmic radiation: interactioninvariance: Lorentz01 natural sciences530UHEultra high energy cosmic rayenergy: thresholdFundamental physics gravitational waves LISA Tests of general relativityCosmic ray experiments0103 physical sciencespropagationddc:530physics of the early universeHigh Energy PhysicsLorentz [invariance]010303 astronomy & astrophysicsphoton: fluxflux [photon]Lorentz [violation]High Energy Astrophysical Phenomena (astro-ph.HE)astro-ph.HEenergy: high010308 nuclear & particles physicscosmic radiation: mass spectrumcosmic ray experiments; ultra high energy cosmic rays; physics of the early universeSettore FIS/01 - Fisica SperimentaleAstronomy and AstrophysicsASTROFÍSICAUltra-high energy cosmic raysthreshold [energy]violation: LorentzAugerobservatoryelectromagnetickinematicsExperimental High Energy Physicshigh [energy]cosmic ray experimentsAstrophysics - High Energy Astrophysical PhenomenaPhysics of the early universe
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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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