Supernovae with IceCube: direction and average neutrino energy determination
Supernovae explosions are among the most powerful events known to occur in the universe. They are also to date the only known source of extrasolar neutrinos. Observing such an explosion in the neutrino sector would provide valuable information about the explosion mechanism of the star, as well as pr...
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ftunivmainzpubl:oai:openscience.ub.uni-mainz.de:20.500.12030/1358 2023-05-15T13:57:01+02:00 Supernovae with IceCube: direction and average neutrino energy determination Eberhardt, Benjamin 2017 https://openscience.ub.uni-mainz.de/handle/20.500.12030/1358 https://hdl.handle.net/20.500.12030/1358 https://doi.org/10.25358/openscience-1356 eng eng Johannes Gutenberg-Universität Mainz http://doi.org/10.25358/openscience-1356 https://openscience.ub.uni-mainz.de/handle/20.500.12030/1358 in Copyright https://rightsstatements.org/vocab/InC/1.0/ openAccess ddc:530 Dissertation publishedVersion Text doc-type:doctoralThesis 2017 ftunivmainzpubl https://doi.org/20.500.12030/1358 https://doi.org/10.25358/openscience-1356 2022-09-15T11:47:20Z Supernovae explosions are among the most powerful events known to occur in the universe. They are also to date the only known source of extrasolar neutrinos. Observing such an explosion in the neutrino sector would provide valuable information about the explosion mechanism of the star, as well as properties of the neutrino. The IceCube neutrino telescope monitors the Antarctic glacier for neutrino induced Cherenkov photons. Even though it was designed to detect high energy neutrinos, IceCube can detect large numbers of MeV neutrinos by observing a collective rise in all photomultiplier rates. This feature enables IceCube to detect outbursts of neutrinos from core collapse supernovae within the Milky Way. In case of a supernova in the centre of the galaxy, IceCube would be able to provide the highest statistics of all experiments world-wide, recording ≈40.000 times more neutrino events than recorded for the last observed supernova in 1987. The collective photomultiplier rate, however does not carry information about single neutrinos making it e.g. impossible to determine the energy and di- rection. Part of this thesis was dedicated to developing new methods to remedy this situation. In the course of this thesis, major contributions have been made to extend the functionality, increase the reliability and to improve the monitoring of the data acquisition system to detect core collapse supernovae. A newly introduced storage system of all recorded photons for an adjustable time in case of an alert opened new analysis opportunities. The passage of the neutrino wave front through the detector can in principle be monitored by triangulation even in the presence of a dark rate background, whenever the flux changes abruptly. This is, e.g., the case for large progeni- tor stars that end up in a black hole, shutting down the neutrino flux almost instantaneously. By using a proper likelihood description, a method has been developed that estimates the supernova direction with 20 degree uncertainty, if the effect of neutrino ... Doctoral or Postdoctoral Thesis Antarc* Antarctic Gutenberg Open Science (Open-Science-Repository of the Johannes Gutenberg-University Mainz) Antarctic Milky Way ENVELOPE(-68.705,-68.705,-71.251,-71.251) The Antarctic |
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English |
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ddc:530 Eberhardt, Benjamin Supernovae with IceCube: direction and average neutrino energy determination |
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ddc:530 |
description |
Supernovae explosions are among the most powerful events known to occur in the universe. They are also to date the only known source of extrasolar neutrinos. Observing such an explosion in the neutrino sector would provide valuable information about the explosion mechanism of the star, as well as properties of the neutrino. The IceCube neutrino telescope monitors the Antarctic glacier for neutrino induced Cherenkov photons. Even though it was designed to detect high energy neutrinos, IceCube can detect large numbers of MeV neutrinos by observing a collective rise in all photomultiplier rates. This feature enables IceCube to detect outbursts of neutrinos from core collapse supernovae within the Milky Way. In case of a supernova in the centre of the galaxy, IceCube would be able to provide the highest statistics of all experiments world-wide, recording ≈40.000 times more neutrino events than recorded for the last observed supernova in 1987. The collective photomultiplier rate, however does not carry information about single neutrinos making it e.g. impossible to determine the energy and di- rection. Part of this thesis was dedicated to developing new methods to remedy this situation. In the course of this thesis, major contributions have been made to extend the functionality, increase the reliability and to improve the monitoring of the data acquisition system to detect core collapse supernovae. A newly introduced storage system of all recorded photons for an adjustable time in case of an alert opened new analysis opportunities. The passage of the neutrino wave front through the detector can in principle be monitored by triangulation even in the presence of a dark rate background, whenever the flux changes abruptly. This is, e.g., the case for large progeni- tor stars that end up in a black hole, shutting down the neutrino flux almost instantaneously. By using a proper likelihood description, a method has been developed that estimates the supernova direction with 20 degree uncertainty, if the effect of neutrino ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Eberhardt, Benjamin |
author_facet |
Eberhardt, Benjamin |
author_sort |
Eberhardt, Benjamin |
title |
Supernovae with IceCube: direction and average neutrino energy determination |
title_short |
Supernovae with IceCube: direction and average neutrino energy determination |
title_full |
Supernovae with IceCube: direction and average neutrino energy determination |
title_fullStr |
Supernovae with IceCube: direction and average neutrino energy determination |
title_full_unstemmed |
Supernovae with IceCube: direction and average neutrino energy determination |
title_sort |
supernovae with icecube: direction and average neutrino energy determination |
publisher |
Johannes Gutenberg-Universität Mainz |
publishDate |
2017 |
url |
https://openscience.ub.uni-mainz.de/handle/20.500.12030/1358 https://hdl.handle.net/20.500.12030/1358 https://doi.org/10.25358/openscience-1356 |
long_lat |
ENVELOPE(-68.705,-68.705,-71.251,-71.251) |
geographic |
Antarctic Milky Way The Antarctic |
geographic_facet |
Antarctic Milky Way The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://doi.org/10.25358/openscience-1356 https://openscience.ub.uni-mainz.de/handle/20.500.12030/1358 |
op_rights |
in Copyright https://rightsstatements.org/vocab/InC/1.0/ openAccess |
op_doi |
https://doi.org/20.500.12030/1358 https://doi.org/10.25358/openscience-1356 |
_version_ |
1766264624427040768 |