![]() No significant neutrino correlation was found, including for the S190728q event from Sunday, July 28. They used data from all 33 gravitational wave events detected by the LIGO-Virgo Collaboration to date and looked for correlation with neutrinos from IceCube. In one, UW–Madison graduate student Raamis Hussain discussed his team’s search for IceCube neutrinos from gravitational wave events ( proceedings). On Tuesday, July 30, there were many IceCube talks during parallel sessions. It will be the most stringent test of the unitarity of the PMNS matrix. The Upgrade strings will surpass the precision of the world’s most accurate measurement by a significant amount within approximately one year of operation. In addition, the Upgrade is an important R&D opportunity for the anticipated IceCube-Gen2 facility.Ī prediction of the Upgrade sensitivity for tau neutrino normalization. The improved calibration of optical ice properties will reduce systematic uncertainties in reconstruction and astrophysical neutrino analysis. This will lead to improved reconstruction capabilities, more events, and world-leading sensitivity to neutrino oscillations. The Upgrade area will be densely instrumented with improved optical sensors, resulting in a more than 10 times more effective photocathode area-per-volume compared to now. The Upgrade array geometry, she explained, is optimized for detecting GeV neutrinos and calibration of the IceCube detector. Credit: IceCube CollaborationĪya Ishihara of Chiba University in Japan dove into more detail on the IceCube Upgrade’s design and science goals later on Monday during a parallel talk ( proceedings). This “double double” was found in the updated 7.5 year HESE sample. Updating IceCube samples of astrophysical neutrinos revealed the first tau neutrino candidate. Carver said these results demonstrate a strong motivation to continue to analyze the objects in these point source catalogs. The most significant source in the catalog was galaxy NGC 1068, which was offset by just 0.35 degrees from the hottest point in the sky. This analysis yielded no new steady-state neutrino sources however, one of the most significant sources turned out to be TXS 0506-056, the blazar that IceCube found to be coincident with a gamma ray flare in 2017. In order to be sensitive to weaker sources, they also did a separate analysis examining a catalog of 110 galactic and extragalactic source candidates for a possible astrophysical neutrino source. Carver and her collaborators scanned across the entire sky looking for the positions in each hemisphere with the highest estimated chances of containing an astrophysical neutrino signal-the hottest points. Later on Saturday, Tessa Carver, a graduate student at the University of Geneva in Switzerland, presented a parallel talk about her all-sky point source search using 10 years of IceCube data ( proceedings). Also shown are various commonly used model predictions. Lastly, Soldin presented plans to expand the IceTop detector by deploying additional scintillators and radio antennae.Īll-particle spectrum and individual mass spectra for the elemental groups hydrogen, helium, oxygen, and iron, measured using three years of data from IceCube and IceTop. Soldin described a number of analyses that have used recent data from IceCube and IceTop, including a measurement of the cosmic ray energy and mass spectrum, conducting all-sky studies of the cosmic ray anisotropy in collaboration with the HAWC observatory, and determining the GeV muon content of cosmic ray air showers. IceTop and IceCube together make a unique detector for cosmic rays because of their large statistics and ability to do three-dimensional track reconstruction of cosmic ray events. The IceTop surface array consists of 81 stations holding 162 ice Cherenkov tanks, each containing two DOMs. Here are some highlights from IceCube talks.ĭuring the highlight session on Saturday, July 27, Dennis Soldin from the University of Delaware presented recent results of cosmic ray measurements from IceCube and IceTop data ( proceedings). There were 82 IceCube contributions at this year’s meeting: two highlight talks, 36 parallel talks, and 43 posters. The IceCube Collaboration had a large presence at this ICRC because UW–Madison is the home institution for IceCube’s headquarters, the Wisconsin IceCube Particle Astrophysics Center (WIPAC). From July 24 to August 1, over 800 cosmic ray physicists gathered at the Memorial Union on Lake Mendota to discuss the latest in cosmic ray research. The 36th International Cosmic Ray Conference finished up last week at the University of Wisconsin–Madison.
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