IceVeto: Extended PeV neutrino astronomy in the Southern Hemisphere with IceCube

Auffenberg, J.; Collaboration, IceCube

doi:10.1063/1.4902769

Cited by 2 publications

(3 citation statements)

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“…The strength of the cut was varied as a function of the declination. In addition, we used the veto capability of the surface array IceTop (Auffenberg et al 2011) to reduce the muon background. Atmospheric muons are accompanied by extended air showers, which can produce early hits in the IceTop surface array.…”

Section: Icecube 59-string Data Samplementioning

confidence: 99%

SEARCH FOR TIME-INDEPENDENT NEUTRINO EMISSION FROM ASTROPHYSICAL SOURCES WITH 3 yr OF IceCube DATA

Aartsen

Abbasi

Abdou

et al. 2013

ApJ

105

129

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We present the results of a search for neutrino point sources using the IceCube data collected between 2008 April and 2011 May with three partially completed configurations of the detector: the 40-, 59-, and 79-string configurations. The live-time of this data set is 1040 days. An unbinned maximum likelihood ratio test was used to search for an excess of neutrinos above the atmospheric background at any given direction in the sky. By adding two more years of data with improved event selection and reconstruction techniques, the sensitivity was improved by a factor of 3.5 or more with respect to the previously published results obtained with the 40-string configuration of IceCube. We performed an all-sky survey and a dedicated search using a catalog of a priori selected objects observed by other telescopes. In both searches, the data are compatible with the background-only hypothesis. In the absence of evidence for a signal, we set upper limits on the flux of muon neutrinos. For an E −2 neutrino spectrum, the observed limits are (0.9-5) × 10 −12 TeV −1 cm −2 s −1 for energies between 1 TeV and 1 PeV in the northern sky and (0.9-23.2) × 10 −12 TeV −1 cm −2 s −1 for energies between 10 2 TeV and 10 2 PeV in the southern sky. We also report upper limits for neutrino emission from groups of sources that were selected according to theoretical models or observational parameters and analyzed with a stacking approach. Some of the limits presented already reach the level necessary to quantitatively test current models of neutrino emission.

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Section: Icecube 59-string Data Samplementioning

confidence: 99%

SEARCH FOR TIME-INDEPENDENT NEUTRINO EMISSION FROM ASTROPHYSICAL SOURCES WITH 3 yr OF IceCube DATA

Aartsen

Abbasi

Abdou

et al. 2013

ApJ

105

129

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“…Finally, the design of a next generation instrument at the South Pole, IceCube-Gen2, 48 has started aiming for the scale of 10km 3 volume (see contribution by O. Botner). Also investigations of possible improvements of the current IceCube performance for the search of cosmic neutrinos by extending the surface detector IceTop acting as a veto 18 to atmospheric signals are underway.…”

Section: Discussionmentioning

confidence: 99%

“…The atmospheric muon background which penetrates from the surface to the depth of the detector can be rejected by focusing on up-going events and/or events that interact within the instrumented volume. Atmospheric neutrinos can only be rejected if they arrive in the detector from above and the corresponding air-shower is either tagged by a surface detector 18 or by observing correlated atmospheric muons. 19 For both types of background the signal to background ratio increases with the energy threshold of the event selection.…”

Section: Summary Of Detection Signaturesmentioning

confidence: 99%

Observations of Diffuse Fluxes of Cosmic Neutrinos

Wiebusch¹

2017

Neutrino Astronomy

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IceVeto: Extended PeV neutrino astronomy in the Southern Hemisphere with IceCube

Cited by 2 publications

References 3 publications

SEARCH FOR TIME-INDEPENDENT NEUTRINO EMISSION FROM ASTROPHYSICAL SOURCES WITH 3 yr OF IceCube DATA

SEARCH FOR TIME-INDEPENDENT NEUTRINO EMISSION FROM ASTROPHYSICAL SOURCES WITH 3 yr OF IceCube DATA

Observations of Diffuse Fluxes of Cosmic Neutrinos

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