Lebensmittelhygiene

Fritz, Eva

doi:10.1007/978-3-662-54000-8_7

Cited by 1 publication

(2 citation statements)

References 8 publications

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“…Checking the data quality is another reason to study the data set in the frequency domain. Lomb-Scargle periodograms were used to investigate the data sample in frequency space, up to Nyquist frequencies of 1 Hz (Fritz & Kappesser 2021;Fritz 2022). With the exception of a signature of the diurnal seasonal oscillation of the muon rate and artifacts from the run transitions and alias effects at high frequency, no significant signal was found.…”

Section: Results On the Galactic Ccsn Searchmentioning

confidence: 99%

“…By buffering the full photomultiplier raw data stream that is stored around candidate neutrino burst or external alerts, additional information can be retrieved (Heereman von Zuydtwyck 2015; Aartsen et al 2017). For example, the average ν e energy can be estimated from rare coincidences between adjacent DOMs (Fritz & Kappesser 2021) and the precision of the burst onset time can be improved.…”

Section: The Detection Principle Of Icecubementioning

confidence: 99%

See 1 more Smart Citation

Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory

Abbasi¹,

Ackermann²,

Adams³

et al. 2022

Phys. Rev. Lett.

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The IceCube Neutrino Observatory has been continuously taking data to search for O(0.5−10) s long neutrino bursts since 2007. Even if a Galactic core-collapse supernova is optically obscured or collapses to a black hole instead of exploding, it will be detectable via the O(10) MeV neutrino burst emitted during the collapse. We discuss a search for such events covering the time between April 17, 2008 and December 31, 2019. Considering the average data taking and analysis uptime of 91.7 % after all selection cuts, this is equivalent to 10.735 years of continuous data taking. In order to test the most conservative neutrino production scenario, the selection cuts were optimized for a model based on a 8.8 solar mass progenitor collapsing to an O-Ne-Mg core. Conservative assumptions on the effects of neutrino oscillations in the exploding star were made. The final selection cut was set to ensure that the probability to detect such a supernova within the Milky Way exceeds 99 %. No such neutrino burst was found in the data after performing a blind analysis. Hence, a 90 % C.L. upper limit on the rate of core-collapse supernovae out to distances of ≈ 25 kpc was determined to be 0.23/yr. For the more distant Magellanic Clouds, only high neutrino luminosity supernovae will be detectable by IceCube, unless external information on the burst time is available. We determined a model-independent limit by parameterizing the dependence on the neutrino luminosity and the energy spectrum.

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Section: Results On the Galactic Ccsn Searchmentioning

confidence: 99%

Section: The Detection Principle Of Icecubementioning

confidence: 99%