0000000001304510
AUTHOR
E. Vogel
Astrophysical neutrinos and cosmic rays observed by IceCube
The core mission of the IceCube neutrino observatory is to study the origin and propagation of cosmic rays. IceCube, with its surface component IceTop, observes multiple signatures to accomplish this mission. Most important are the astrophysical neutrinos that are produced in interactions of cosmic rays, close to their sources and in interstellar space. IceCube is the first instrument that measures the properties of this astrophysical neutrino flux and constrains its origin. In addition, the spectrum, composition, and anisotropy of the local cosmic-ray flux are obtained from measurements of atmospheric muons and showers. Here we provide an overview of recent findings from the analysis of Ic…
The IceCube realtime alert system
Following the detection of high-energy astrophysical neutrinos in 2013, their origin is still unknown. Aiming for the identification of an electromagnetic counterpart of a rapidly fading source, we have implemented a realtime analysis framework for the IceCube neutrino observatory. Several analyses selecting neutrinos of astrophysical origin are now operating in realtime at the detector site in Antarctica and are producing alerts to the community to enable rapid follow-up observations. The goal of these observations is to locate the astrophysical objects responsible for these neutrino signals. This paper highlights the infrastructure in place both at the South Pole detector site and at IceC…
Measurement of Atmospheric Neutrino Oscillations at 6–56 GeV with IceCube DeepCore
We present a measurement of the atmospheric neutrino oscillation parameters using three years of data from the IceCube Neutrino Observatory. The DeepCore infill array in the center of IceCube enables the detection and reconstruction of neutrinos produced by the interaction of cosmic rays in Earth's atmosphere at energies as low as ∼5 GeV. That energy threshold permits measurements of muon neutrino disappearance, over a range of baselines up to the diameter of the Earth, probing the same range of L/Eν as long-baseline experiments but with substantially higher-energy neutrinos. This analysis uses neutrinos from the full sky with reconstructed energies from 5.6 to 56 GeV. We measure Δm322=2.31…
Search for sterile neutrino mixing using three years of IceCube DeepCore data
Physical review / D 95(11), 112002(2017). doi:10.1103/PhysRevD.95.112002
Computational Techniques for the Analysis of Small Signals in High-Statistics Neutrino Oscillation Experiments
The current and upcoming generation of Very Large Volume Neutrino Telescopes – collecting unprecedented quantities of neutrino events – can be used to explore subtle effects in oscillation physics, such as (but not restricted to) the neutrino mass ordering. The sensitivity of an experiment to these effects can be estimated from Monte Carlo simulations. With the high number of events that will be collected, there is a trade-off between the computational expense of running such simulations and the inherent statistical uncertainty in the determined values. In such a scenario, it becomes impractical to produce and use adequately-sized sets of simulated events with traditional methods, such as M…
Synthesis and Electrochemical Reactivity of sigma-Bonded and N-Substituted Cobalt Porphycenes.
The first synthesis and characterization of sigma-bonded and N-substituted cobalt porphycenes is reported. The investigated compounds are represented as (Pc)Co(R) and (N-CH(3)OEPc)CoCl, where R is CH(3) or C(6)H(5), Pc is the dianion of 2,3,6,7,12,13,16,17-octaethylporphycene (OEPc), 2,7,12,17-tetrapropylporphycene (TPrPc), or 2,7,12,17-tetraethyl-3,6,13,16-tetramethylporphycene (EtioPc), N-CH(3)OEPc is the monoanion of N-methyl-2,3,6,7,12,13,16,17-octaethylporphycene. Each sigma-bonded (Pc)Co(R) derivative can be reversibly reduced or oxidized by two electrons, but a slow migration of the sigma-bonded R group occurs following electrogeneration of [(Pc)Co(R)](+)()(*)() leading, as a final p…
CCDC 161427: Experimental Crystal Structure Determination
Related Article: Qian Yi Li, E.Vogel, A.H.Parham, M.Nieger, M.Bolte, R.Frohlich, P.Saarenketo, K.Rissanen, F.Vogtle|2001|Eur.J.Org.Chem.|2001|4041|doi:10.1002/1099-0690(200111)2001:213.0.CO;2-7
CCDC 161426: Experimental Crystal Structure Determination
Related Article: Qian Yi Li, E.Vogel, A.H.Parham, M.Nieger, M.Bolte, R.Frohlich, P.Saarenketo, K.Rissanen, F.Vogtle|2001|Eur.J.Org.Chem.|2001|4041|doi:10.1002/1099-0690(200111)2001:213.0.CO;2-7
CCDC 161428: Experimental Crystal Structure Determination
Related Article: Qian Yi Li, E.Vogel, A.H.Parham, M.Nieger, M.Bolte, R.Frohlich, P.Saarenketo, K.Rissanen, F.Vogtle|2001|Eur.J.Org.Chem.|2001|4041|doi:10.1002/1099-0690(200111)2001:213.0.CO;2-7
CCDC 161425: Experimental Crystal Structure Determination
Related Article: Qian Yi Li, E.Vogel, A.H.Parham, M.Nieger, M.Bolte, R.Frohlich, P.Saarenketo, K.Rissanen, F.Vogtle|2001|Eur.J.Org.Chem.|2001|4041|doi:10.1002/1099-0690(200111)2001:213.0.CO;2-7