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| Titel |
Neutrinos from colliding wind binaries: future prospects for PINGU and ORCA |
| VerfasserIn |
J. Becker Tjus |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2199-3955
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| Digitales Dokument |
URL |
| Erschienen |
In: ASTRA Proceedings ; 1, no. 1 ; Nr. 1, no. 1 (2014-05-21), S.7-11 |
| Datensatznummer |
250115103
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| Publikation (Nr.) |
 copernicus.org/ap-1-7-2014.pdf |
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| Zusammenfassung |
| Massive stars play an important role in explaining the cosmic ray spectrum
below the knee, possibly even up to the ankle, i.e. up to energies of
1015 or 1018.5 eV, respectively. In particular, Supernova
Remnants are discussed as one of the main candidates to explain the cosmic
ray spectrum. Even before their violent deaths, during the stars' regular
life times, cosmic rays can be accelerated in wind environments. High-energy
gamma-ray measurements indicate hadronic acceleration binary systems, leading
to both periodic gamma-ray emission from binaries like LSI + 60 303 and
continuous emission from colliding wind environments like η-Carinae. The
detection of neutrinos and photons from hadronic interactions are one of the
most promising methods to identify particle acceleration sites. In this
paper, future prospects to detect neutrinos from colliding wind environments
in massive stars are investigated. In particular, the seven most promising
candidates for emission from colliding wind binaries are investigated to
provide an estimate of the signal strength. The expected signal of a single
source is about a factor of 5–10 below the current IceCube sensitivity and
it is therefore not accessible at the moment. What is discussed in addition
is future the possibility to measure low-energy neutrino sources with
detectors like PINGU and ORCA: the minimum of the atmospheric neutrino flux
at around 25 GeV from neutrino oscillations provides an opportunity
to reduce the background and increase the significance to searches for
GeV–TeV neutrino sources. This paper presents the first idea, detailed
studies including the detector's effective areas will be necessary in the
future to test the feasibility of such an approach. |
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