Bulletin of the American Physical Society
APS April Meeting 2022
Volume 67, Number 6
Saturday–Tuesday, April 9–12, 2022; New York
Session D05: International Collaborations in Particle AstrophysicsInvited Live Streamed Undergrad Friendly
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Sponsoring Units: FIP Chair: Christine Darve, European Spallation Source Room: Astor |
Saturday, April 9, 2022 1:30PM - 2:06PM |
D05.00001: POLARQUEST – A Sailing Expedition to Measure Cosmic Rays (And Not Only) Beyond the Arctic Circle Invited Speaker: Luisa Cifarelli The scientific motivation of the Polarquest expedition performed in 2018 on board of the eco-friendly sailboat Nanuq around the Svalbard Archipelago will be illustrated. Emphasis on the complexity of the expedition, and on its scientific and technological challenges will be given, together with a sense for adventure. The measurements of cosmic muons performed “on board” at unprecedented northern latitudes, where no systematic and accurate sea-level measurements exist, will be reported, together with further measurements performed in 2019 “on the road” with the same detector (previously on board of Nanuq) to allow a wide latitude span investigation. Results from a set of cosmic muon detectors since then permanently installed at the northernmost International Research Station of Ny-Ålesund will also be presented. |
Saturday, April 9, 2022 2:06PM - 2:42PM |
D05.00002: Looking Down at the Sky with the IceCube Neutrino Observatory Invited Speaker: Nathan Whitehorn The IceCube Neutrino Observatory, located at Amundsen-Scott South Pole Station, is the world's premier instrument for observations of TeV-PeV neutrinos, built to address a number of important questions including the behavior of neutrinos at these high energies and the origin of high-energy cosmic rays. Completed in 2010 with support from the United States, Germany, Sweden, Japan, Belgium, and others, the collaboration now spans 56 institutions in 14 countries. During its first ten years of observation, IceCube has provided the first detection of a nearly-isotropic astrophysical neutrino flux extending to well over a PeV, and the first detection of a TeV neutrino source beyond the Earth's atmosphere, the active galaxy TXS 0506+056, as well as a large number of other results on a wide variety of topics. Despite the detection of a single, distant source, the origin of the bulk of the cosmic neutrino flux seen by IceCube remains a mystery 8 years after its discovery. This talk will describe IceCube science and the next steps for the field to answer the deepening mystery of the astrophysical neutrino flux's origin, including next-generation international detector efforts. |
Saturday, April 9, 2022 2:42PM - 3:18PM |
D05.00003: HAWC the Mexico-US Collaboration to build the highest energy gamma ray observatory Invited Speaker: Andres Sandoval In 2008 groups from 14 institutions in the US and 11 from Mexico got together creating the HAWC Collaboration with the aim to build a frontier observatory in the mountains of central Mexico at 4,100 MASL to detect the highest energy gamma rays from galactic and extragalactic sources. After some years of R&D, prototyping of arrays of detectors and defining the final configuration of the observatory, proposals were approved. Funding was obtained from the NSF channeled through the University of Maryland, DoE through Los Alamos National Laboratory and Conacyt based in the Physics Institute of the National University of Mexico, UNAM. The way the collaboration was organized, the experiences and lessons learnt in a project involving two countries and three funding agencies and 25 institutions will be presented. The HAWC gamma ray observatory was successfully built in time and within budget by 2014 and has been in continuous operation since, providing a wealth of insight on the most violent regions of the Universe. |
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