SEARCHES FOR A DIFFUSE FLUX OF EXTRATERRESTRIAL MUON NEUTRINOS WITH THE ICECUBE OBSERVATORY

2009 ◽  
Vol 18 (10) ◽  
pp. 1603-1607
Author(s):  
◽  
LEVENT DEMIRÖRS
Keyword(s):  
Cosmic Ray ◽  
High Energy ◽  
Muon Neutrinos ◽  
Atmospheric Neutrinos ◽  
South Pole ◽  
The South ◽  
Diffuse Flux

The IceCube observatory is currently being contructed at the South Pole. Scheduled to be completed in 2011, it already offers a large increase in sensitivity over its predecessor, the AMANDA detector. This increase is expected to improve significantly the search for extraterrestrial neutrinos which are currently under way. One of the key searches at the IceCube observatory is for a diffuse flux of high energy extraterrestrial muon neutrinos, in excess of that observed from cosmic-ray induced atmospheric neutrinos. In this paper, we will review results obtained with the AMANDA and early IceCube detectors as well as give an outlook on upcoming analyses.

ULTRA HIGH ENERGY NEUTRINO TELESCOPES

2006 ◽  
Vol 21 (08n09) ◽  
pp. 1914-1924
Author(s):  
PER OLOF HULTH
Keyword(s):  
Lake Baikal ◽  
High Energy ◽  
Atmospheric Neutrinos ◽  
South Pole ◽  
Ultra High Energy ◽  
The South ◽  
High Energy Neutrino ◽  
Neutrino Telescopes ◽  
Energy Neutrino ◽  
Neutrino Astronomy

The Neutrino Telescopes NT-200 in Lake Baikal, Russia and AMANDA at the South Pole, Antarctica have now opened the field of High Energy Neutrino Astronomy. Several other Neutrino telescopes are in the process of being constructed or very near realization. Several thousands of atmospheric neutrinos have been observed with energies up to several 100 TeV but so far no evidence for extraterrestrial neutrinos has been found.

scholarly journals Recent Results from IceCube

2018 ◽  
Vol 46 ◽  
pp. 1860048 ◽  
Author(s):  
Dawn Williams
Keyword(s):  
Energy Range ◽  
Neutrino Oscillation ◽  
Atmospheric Neutrino ◽  
High Energy ◽  
South Pole ◽  
Neutrino Interactions ◽  
Diffuse Flux ◽  
High Energy Neutrinos

The IceCube Neutrino Observatory is a cubic kilometer detector located at the geographic South Pole. IceCube was designed to detect high-energy neutrinos from cosmic sources, and the DeepCore extension of IceCube enables the study of atmospheric neutrino interactions down to energies of a few GeV. IceCube has detected a diffuse flux of neutrinos in the energy range from 100 TeV to several PeV, the properties of which are inconsistent with an atmospheric origin, and has also published competitive limits on atmospheric neutrino oscillation parameters and other neutrino properties. This paper presents the latest results from IceCube and prospects for future upgrades and expansions of the detector.

High energy cosmic ray results from the ULYSSES ascent to the Solar South Pole

1995 ◽  
Vol 39 (1) ◽  
pp. 75-86 ◽  
Author(s):  
H. Kunow ◽  
W. Dröge ◽  
B. Heber ◽  
R. Müller-Mellin ◽  
K. Röhrs ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
High Energy ◽  
South Pole

scholarly journals On the age vs depth and optical clarity of deep ice at the South Pole

1995 ◽  
Vol 41 (139) ◽  
pp. 445-454
Author(s):  
Keyword(s):  
Visible Light ◽  
High Energy ◽  
Dust Concentration ◽  
Cherenkov Light ◽  
South Pole ◽  
The South ◽  
High Energy Neutrino ◽  
Arrival Times ◽  
Energy Neutrino ◽  
Crystal Boundaries

AbstractThe first four strings of phototubes for the AMANDA high-energy neutrino observatory are now frozen in place at a depth of 800-1000 m in ice at the South Pole, During the 1995-96 season, as many as six more strings will be deployed at greater depths. Provided absorption, scattering and refraction of visible light are sufficiently small, the trajectory of a muon into which a neutrino converts can be determined by using the array of phototubes to measure the arrival times of Cherenkov light emitted by the muon. To help in deciding on the depth for implantation of the six new strings, we discuss models of age vs depth for South Pole ice, we estimate mean free paths for scattering from bubbles and dust as a function of depth and we assess distortion of light paths due to refraction at crystal boundaries and interfaces between air-hydrate inclusions and normal ice. We conclude that the interval 1600-2100 m will be suitably transparent for a future 1 km3 observatory except possibly in a region a few tens of meters thick at a depth corresponding to a peak in the dust concentration at 60 k year BP.

scholarly journals Modeling ice birefringence and oblique radio wave propagation for neutrino detection at the South Pole

2020 ◽  
Vol 61 (81) ◽  
pp. 84-91 ◽  
Author(s):  
T. M. Jordan ◽  
D. Z. Besson ◽  
I. Kravchenko ◽  
U. Latif ◽  
B. Madison ◽  
...  
Keyword(s):  
Time Delays ◽  
Ice Core ◽  
High Energy ◽  
Propagation Model ◽  
Neutrino Interaction ◽  
Crystallographic Axis ◽  
South Pole ◽  
The South ◽  
Range Estimation ◽  
Ice Flow

AbstractThe Askaryan Radio Array (ARA) experiment at the South Pole is designed to detect high-energy neutrinos which, via in-ice interactions, produce coherent radiation at frequencies up to 1000 MHz. Characterization of ice birefringence, and its effect upon wave polarization, is proposed to enable range estimation to a neutrino interaction and hence aid in neutrino energy reconstruction. Using radio transmitter calibration sources, the ARA collaboration recently measured polarization-dependent time delay variations and reported significant time delays for trajectories perpendicular to ice flow, but not parallel. To explain these observations, and assess the capability for range estimation, we use fabric data from the SPICE ice core to model ice birefringence and construct a bounding radio propagation model that predicts polarization time delays. We compare the model with new data from December 2018 and demonstrate that the measurements are consistent with the prevailing horizontal crystallographic axis aligned near-perpendicular to ice flow. The study supports the notion that range estimation can be performed for near flow-perpendicular trajectories, although tighter constraints on fabric orientation are desirable for improving the accuracy of estimates.

scholarly journals Hybrid detection of high-energy cosmic neutrinos with the next generation neutrino detectors at the South Pole

2019 ◽  
Author(s):  
Simona Toscano ◽  
Paul Coppin ◽  
Krijn de Vries ◽  
Nick van Eijndhoven ◽  
Juan Antonio Aguilar
Keyword(s):  
High Energy ◽  
South Pole ◽  
Next Generation ◽  
The South ◽  
Neutrino Detectors ◽  
Hybrid Detection

scholarly journals Observation of radio emissions from electron beams using an ice target

2019 ◽  
Vol 216 ◽  
pp. 02010
Author(s):  
Keiichi Mase ◽  
Daisuke Ikeda ◽  
Aya Ishihara ◽  
Hiroyuki Sagawa ◽  
Tatsunobu Shibata ◽  
...  
Keyword(s):  
Light Source ◽  
Electron Beams ◽  
High Energy ◽  
Neutrino Telescope ◽  
South Pole ◽  
The South ◽  
Telescope Array ◽  
Radio Emissions ◽  
Systematic Uncertainties ◽  
Radio Signals

To observe high energy cosmogenic neutrinos above 50 PeV, the large neutrino telescope ARA is being built at the South Pole. The ARA telescope detects neutrinos by observing radio signals by the Askaryan effect. We performed an experiment using 40 MeV electron beams of the Telescope Array Electron Light Source to verify the understanding of the Askaryan emission as well as the detector responses used in the ARA experiment. Clear coherent polarized radio signals were observed with and without an ice target. We found that the observed radio signals are consistent with simulation, showing that our understanding of the radio emissions and the detector responses are within the systematic uncertainties of the ARAcalTA experiment which is at the level of 30%.

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