Star-forming galaxies are not the main source of IceCube neutrinos

Star-forming galaxies (SFGs), which include galaxies like the Milky Way and also starburst galaxies that produce more supernovas and cosmic rays, are also expected to contribute to the observed neutrino flux. However, a new study published yesterday on arXiv shows that SFGs alone are not able to explain the high rate of astrophysical neutrinos. […]

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DECO and IceCube summer 2015 student internships

The Distributed Electronic Cosmic-Ray Observatory (DECO) is a citizen science project that allows users around the world to detect cosmic rays and other energetic particles with their cell phones and tablets. Four high school students joined the DECO development team at WIPAC for a seven-week internship. This internship was supported by the UW–Madison QuarkNet Center hosted at WIPAC.

A fifth student worked as an intern for IceCube with support by a UW–Madison Hilldale professorship. […]

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Antarctic neutrino detector firms up cosmic neutrino sighting

Sorting through the billions of subatomic particles that zip through its frozen cubic-kilometer-sized detector each year, researchers using the IceCube Neutrino Observatory have gathered powerful new evidence in support of 2013 observations confirming the existence of cosmic neutrinos. […]

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ARA presents first results with two complete radio stations

The ARA Collaboration announces today the first results using data taken during 10 months in 2013. Researchers performed a search for UHE neutrinos that resulted in no neutrino candidates but allows setting a neutrino flux limit in the energy range where most UHE neutrinos are expected to be observed. These results, submitted today to Physical Review D, significantly improve on those published a few months ago with the prototype testbed station and prove that ARA is on a good track in the quest for GZK neutrinos. […]

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The ARA Collaboration meets in Madison

Today, the ARA Collaboration ends three days of meetings to discuss recent analyses and prepare for future deployments of the Askaryan Radio Array (ARA) in Antarctica. The meeting, hosted by WIPAC, brought about 20 ARA collaborators from around the world to Madison. […]

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2015 GNN Dissertation Prize awarded to van Santen

Jakob van Santen, a former graduate student working on IceCube at the Wisconsin IceCube Particle Astrophysics Center (WIPAC), was recently awarded a Dissertation Prize from the Global Neutrino Network. This is the first year that the GNN Dissertation Prize has been awarded. It recognizes young postdoctoral candidates who have written an outstanding thesis and contributed significantly to the project. […]

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First search for ultra-high-energy neutrinos in ARA while future remains uncertain

The ARA Collaboration has recently published in the Astroparticle Physics journal a first search for ultra-high-energy (UHE) neutrinos performed with the ARA testbed detector. No neutrino candidate events were found, an expected result since the sensitivity of one set of antennas is insufficient to measure UHE neutrinos, but new constraints on the neutrino flux were derived. […]

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Here comes HAWC: New observatory to seek out gamma rays

High on a sleeping Mexican volcano, a new particle astrophysics observatory is about to blink to life, commencing an all-sky search for very high energy gamma rays — a search that could greatly expand the catalog of known gamma ray sources and chip away at the mystery of the cosmic rays that constantly bombard our planet. […]

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