News – Page 81

A search for cosmic-ray sources with IceCube, the Pierre Auger Observatory, and the Telescope Array

Posted on December 1, 2015 by Silvia Bravo

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In a new study by the IceCube, Pierre Auger, and Telescope Array Collaborations, scientists have looked for correlations between the highest energy neutrino candidates in IceCube and the highest energy cosmic rays in these two cosmic-ray observatories. The results, submitted today to the Journal of Cosmology and Astroparticle Physics, have not found any correlation at discovery level. However, potentially interesting results have been found and will continue to be studied in future joint analyses. […]

Week 46 at the Pole

Posted on November 30, 2015 by Jean DeMerit

There are training sessions for just about everything that goes on at the South Pole. Dropping cargo from an airplane is no exception. Last week, a C-17 performed the annual air drop training, shown here against a spectacular blue-sky backdrop just after releasing its cargo, which can be seen as a tiny speck off to the left, slowly parachuting to the ground […]

Week 45 at the Pole

Posted on November 20, 2015 by Jean DeMerit

A steady wind shows the flags at the ceremonial South Pole aligning themselves quite neatly. Flying conditions were good for most of the week, with several incoming flights bringing more summer visitors to the Pole, including the first IceCube team members to join the winterovers this season. […]

Week 44 at the Pole

Posted on November 12, 2015 by Jean DeMerit

Clear weather allowed most of the scheduled flights to make it to the Pole last week, with a stream of new arrivals from each plane. Inside the galley, the new summer crowd and the few remaining winterover staff do a good job of filling up the space. […]

ANTARES and IceCube, a first joint search for neutrino sources launches a future of further collaboration

Posted on November 9, 2015 by Silvia Bravo

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New results submitted today to the Astrophysical Journal are the outcome of a combined search for neutrino point sources performed by the ANTARES and IceCube collaborations. No source has been identified, but the combined search improves the sensitivity to point sources by up to a factor of two, which delivers more stringent upper limits on the flux for the candidate sources considered in this analysis. […]

Week 43 at the Pole

Posted on November 6, 2015 by Jean DeMerit

It’s that time of year for the “changing of the guard”—for IceCube’s winterovers, that is. Last week, Christian Krueger, one of IceCube’s 2015-16 winterovers, arrived alone and can be seen walking back from the plane alongside Stephan Richter, current winterover, who was on hand to greet him. […]

IceCube sets best limits for mildly relativistic magnetic monopoles

Posted on November 5, 2015 by Silvia Bravo

The IceCube Collaboration today presents a search for relativistic and mildly relativistic monopoles using two years of data. No monopole candidate was observed, but IceCube data allowed setting very stringent limits for the range of velocities studied. These results have been submitted today to European Physical Journal C. […]

Week 42 at the Pole

Posted on October 29, 2015 by Jean DeMerit

IceCube winterover Stephan Richter took this wide angle shot of the South Pole station’s galley—in a completely empty state, not likely to found this way much longer since summer personnel will be arriving soon. The galley will be a bit busier with the expanded station population. […]

On neutrino oscillations

Posted on October 28, 2015 by Staff

Neutrino physicists spend a lot of time in the dark. As a figurative statement this reflects how difficult neutrinos are to understand, but it also reveals the literal sense that we work with experiments that do not see a lot of sun—and it’s not just the South Pole, it’s also in mines, tunnels, and deep underwater in seas and lakes. But just like a rare neutrino interaction, every so often a brief flash of light offers some new truth about the nature of our universe. […]

Week 41 at the Pole

Posted on October 23, 2015 by Jean DeMerit

The first planes of the season have arrived at the South Pole. Two planes landed last week, first a Basler (bearing gifts) and later a Twin Otter, shown in this image. […]