0000000001318487

AUTHOR

D.r. Smith

showing 2 related works from this author

Light sterile neutrino sensitivity at the nuSTORM facility

2014

A facility that can deliver beams of electron and muon neutrinos from the decay of a stored muon beam has the potential to unambiguously resolve the issue of the evidence for light sterile neutrinos that arises in short-baseline neutrino oscillation experiments and from estimates of the effective number of neutrino flavors from fits to cosmological data. In this paper, we show that the nuSTORM facility, with stored muons of 3.8 GeV/c $\pm$ 10%, will be able to carry out a conclusive muon neutrino appearance search for sterile neutrinos and test the LSND and MiniBooNE experimental signals with 10$\sigma$ sensitivity, even assuming conservative estimates for the systematic uncertainties. This…

Nuclear and High Energy PhysicsParticle physicsPhysics::Instrumentation and DetectorsSolar neutrinoAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesAstronomy & AstrophysicsComputer Science::Digital LibrariesPartícules (Física nuclear)High Energy Physics - ExperimentMiniBooNENuclear physicsHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)0201 Astronomical and Space SciencesTOOLKITNeutrino oscillationDETECTOR0206 Quantum PhysicsPhysicsGALLEXScience & Technologyhep-exPhysicsPHYSICS PARTICLES & FIELDSHigh Energy Physics::Phenomenologyhep-phSolar neutrino problemNuclear & Particles PhysicsCosmic neutrino backgroundHigh Energy Physics - PhenomenologyNeutrino detectorPhysical Sciences0202 Atomic Molecular Nuclear Particle and Plasma PhysicsComputer Science::Mathematical SoftwareMeasurements of neutrino speedPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentNeutrinoParticle Physics - Experiment
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3C 279 Event Horizon Telescope imaging

2020

3C 279 is an archetypal blazar with a prominent radio jet that show broadband flux density variability across the entire electromagnetic spectrum. We use an ultra-high angular resolution technique - global Very Long Baseline Interferometry (VLBI) at 1.3mm (230GHz) - to resolve the innermost jet of 3C 279 in order to study its fine-scale morphology close to the jet base where highly variable gamma-ray emission is thought to originate, according to various models. The source was observed during four days in April 2017 with the Event Horizon Telescope (EHT) at 230 GHz, including the phased Atacama Large Millimeter/submillimeter Array (ALMA), at an angular resolution of ~20uarcsec (at a redshif…

observational astronomygalactic and extragalactic astronomyAstrophysics and AstronomyInterferometryAstrophysics::High Energy Astrophysical PhenomenaRadio galaxiesPhysicsGalaxiesNatural Sciences
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