111 research outputs found

    Pouring Nonprobate Assets into a Testamentary Trust: A Half-Protected Activity in Alaska

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    Den hĂ€r rapporten ger en översikt över vad som gjorts och uppnĂ„tts i projektet Grönovation under 2013 och fram till mars 2014. Rapporten innehĂ„ller ingen bakgrundsbeskrivning om projektet Grönovation. Det finns i andra dokument och kommer bli en del av kommande publikationer. Fokus hĂ€r Ă€r att beskriva vilka aktiviteter som genomförts. MĂ„let var att sammanfatta varje aktivitet snarare Ă€n att ge ”en hel uppsats” om varje. Vi kommer hĂ€nvisa till fördjupad dokumentation i de fall sĂ„dan Ă€r framtagen eller Ă€r pĂ„ vĂ€g att tas fram. De olika aktiviteterna Ă€r presenterade i kronologisk ordning. Men i praktiken Ă€r flera av dem processer som löper över tiden. NĂ„gra aktiviteter Ă€r fallstudier. Andra Ă€r pĂ„började ”skarpa projekt”. Ytterligare nĂ„gra Ă€r av annan karaktĂ€r (t.ex. litteraturbaserade historiska studier). Vissa av fallstudierna speglar innovationer (eller tĂ€nkta innovationer). Andra speglar arenor som syftar till (eller de facto bidrar till) stimulans av innovativa processer. Den exakta kategoriseringen av aktiviteterna fĂ„r göras senare i processen. Vi vill understryka att rapporten bara Ă€r delresultat. Analyser, fördjupade studier och mycket annat ligger framför oss. Men rapporten ger Ă€ndĂ„ en översikt och nĂ„got att bygga vidare pĂ„. Vi Ă€r ocksĂ„ medvetna om att rapporten krĂ€ver att lĂ€saden Ă€r initierade i olika specialomrĂ„den. Alla vet kanske inte vad en ”TopDown” Ă€r eller GPS switch Ă€r. I kommande publikationer med förmodat bredare lĂ€sekrets ska facktermer förklaras mer Ă€n vad vi gjort i detta utkast

    Transforming entomology to adapt to global concerns: 2021 student debates

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    The 2021 Student Debates of the Entomological Society of America (ESA) were held at the Annual Meeting in Denver, CO. The event was organized by the Student Debates Subcommittee (SDS) of the Student Affairs Committee (SAC). The theme of the 2021 Student Debates was “Transforming Entomology to Adapt to Global Concerns”, with 3 topics. Each topic had an unbiased introduction and 2 teams. The debate topics were (i) Nonnative insect introduction is an ethical approach for counteracting proliferation and overpopulation of consumers, (ii) What is the best technology to control undesirable insect pests in urban and agricultural settings? and (iii) Compared to other solutions, like plant-based diets, insect farming is the best method to address rising human global food and nutrient supply demands. Unbiased introduction speakers and teams had approximately 6 months to prepare for their presentations

    TXS 0506+056 with Updated IceCube Data

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    Past results from the IceCube Collaboration have suggested that the blazar TXS 0506+056 is a potential source of astrophysical neutrinos. However, in the years since there have been numerous updates to event processing and reconstruction, as well as improvements to the statistical methods used to search for astrophysical neutrino sources. These improvements in combination with additional years of data have resulted in the identification of NGC 1068 as a second neutrino source candidate. This talk will re-examine time-dependent neutrino emission from TXS 0506+056 using the most recent northern-sky data sample that was used in the analysis of NGC 1068. The results of using this updated data sample to obtain a significance and flux fit for the 2014 TXS 0506+056 "untriggered" neutrino flare are reported

    Conditional normalizing flows for IceCube event reconstruction

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    Galactic Core-Collapse Supernovae at IceCube: “Fire Drill” Data Challenges and follow-up

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    The next Galactic core-collapse supernova (CCSN) presents a once-in-a-lifetime opportunity to make astrophysical measurements using neutrinos, gravitational waves, and electromagnetic radiation. CCSNe local to the Milky Way are extremely rare, so it is paramount that detectors are prepared to observe the signal when it arrives. The IceCube Neutrino Observatory, a gigaton water Cherenkov detector below the South Pole, is sensitive to the burst of neutrinos released by a Galactic CCSN at a level >10σ. This burst of neutrinos precedes optical emission by hours to days, enabling neutrinos to serve as an early warning for follow-up observation. IceCube\u27s detection capabilities make it a cornerstone of the global network of neutrino detectors monitoring for Galactic CCSNe, the SuperNova Early Warning System (SNEWS 2.0). In this contribution, we describe IceCube\u27s sensitivity to Galactic CCSNe and strategies for operational readiness, including "fire drill" data challenges. We also discuss coordination with SNEWS 2.0

    All-Energy Search for Solar Atmospheric Neutrinos with IceCube

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    The interaction of cosmic rays with the solar atmosphere generates a secondary flux of mesons that decay into photons and neutrinos – the so-called solar atmospheric flux. Although the gamma-ray component of this flux has been observed in Fermi-LAT and HAWC Observatory data, the neutrino component remains undetected. The energy distribution of those neutrinos follows a soft spectrum that extends from the GeV to the multi-TeV range, making large Cherenkov neutrino telescopes a suitable for probing this flux. In this contribution, we will discuss current progress of a search for the solar neutrino flux by the IceCube Neutrino Observatory using all available data since 2011. Compared to the previous analysis which considered only high-energy muon neutrino tracks, we will additionally consider events produced by all flavors of neutrinos down to GeV-scale energies. These new events should improve our analysis sensitivity since the flux falls quickly with energy. Determining the magnitude of the neutrino flux is essential, since it is an irreducible background to indirect solar dark matter searches

    Multiplicity of TeV muons in extensive air showers detected with IceTop and IceCube

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    We report on an analysis of the high-energy muon component in near-vertical extensive air showers detected by the surface array IceTop in coincidence with the in-ice array of the IceCube Neutrino Observatory. In the coincidence measurement, the predominantly electromagnetic signal measured by IceTop is used to estimate the cosmic-ray primary energy, and the energy loss of the muon bundle in the deep in-ice array is used to estimate the number of muons in the shower with energies above 500 GeV (“TeV muons”). The average multiplicity of these TeV muons is determined for cosmic-ray energies between 2.5 PeV and 100 PeV assuming three different hadronic interaction models: Sibyll 2.1, QGSJet-II.04, and EPOS-LHC. For all models considered, the results are found to be in good agreement with the expectations from simulations. A tension exists, however, between the high-energy muon multiplicity and other observables; most importantly the density of GeV muons measured by IceTop using QGSJet-II.04 and EPOS-LHC

    Searches for IceCube Neutrinos Coincident with Gravitational Wave Events

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    Recent neutrino oscillation results with the IceCube experiment

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    The IceCube South Pole Neutrino Observatory is a Cherenkov detector instrumented in a cubic kilometer of ice at the South Pole. IceCube’s primary scientific goal is the detection of TeV neutrino emissions from astrophysical sources. At the lower center of the IceCube array, there is a subdetector called DeepCore, which has a denser configuration that makes it possible to lower the energy threshold of IceCube and observe GeV-scale neutrinos, opening the window to atmospheric neutrino oscillations studies. Advances in physics sensitivity have recently been achieved by employing Convolutional Neural Networks to reconstruct neutrino interactions in the DeepCore detector. In this contribution, the recent IceCube result from the atmospheric muon neutrino disappearance analysis using the CNN-reconstructed neutrino sample are presented and compared to the existing worldwide measurements
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