Lowering IceCube's energy threshold for point source searches in the Southern Sky
- Autores
- Aartsen, M. G.; Abraham, K.; Ackermann, M.; Adams, J.; Aguilar, J. A.; Golup, Geraldina Tamara; Wallace, A.; Wallraff, M.; Wandkowsky, N.; Weaver, Ch.; Wendt, C.; Westerhoff, S.; Whelan, B. J.; Whitehorn, N.; Wickmann, S.; Wiebe, K.; Wiebusch, C. H.; Wille, L.; Williams, D. R.; Wills, L.; Wissing, H.; Wolf, M.; Wood, T. R.; Woschnagg, K.; Xu, D. L.; Xu, X. W.; Xu, Y.; Yanez, J. P.; Yodh, G.; Yoshida, S.; Zoll, M.
- Año de publicación
- 2016
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Observation of a point source of astrophysical neutrinos would be a "smoking gun" signature of a cosmic-ray accelerator. While IceCube has recently discovered a diffuse flux of astrophysical neutrinos, no localized point source has been observed. Previous IceCube searches for point sources in the southern sky were restricted by either an energy threshold above a few hundred TeV or poor neutrino angular resolution. Here we present a search for southern sky point sources with greatly improved sensitivities to neutrinos with energies below 100 TeV. By selecting charged-current ν μ interacting inside the detector, we reduce the atmospheric background while retaining efficiency for astrophysical neutrino-induced events reconstructed with sub-degree angular resolution. The new event sample covers three years of detector data and leads to a factor of 10 improvement in sensitivity to point sources emitting below 100 TeV in the southern sky. No statistically significant evidence of point sources was found, and upper limits are set on neutrino emission from individual sources. A posteriori analysis of the highest-energy (~100 TeV) starting event in the sample found that this event alone represents a 2.8σ deviation from the hypothesis that the data consists only of atmospheric background.
Fil: Aartsen, M. G.. University of Adelaide; Australia
Fil: Abraham, K.. Technische Universität München; Alemania
Fil: Ackermann, M.. Deutsches Elektronen-Synchrotron; Alemania
Fil: Adams, J.. University Of Canterbury; Nueva Zelanda
Fil: Aguilar, J. A.. Université Libre de Bruxelles; Bélgica
Fil: Golup, Geraldina Tamara. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Wallace, A.. University of Adelaide; Australia
Fil: Wallraff, M.. Rwth Aachen University; Alemania
Fil: Wandkowsky, N.. University of Wisconsin; Estados Unidos
Fil: Weaver, Ch.. University of Alberta; Canadá
Fil: Wendt, C.. University of Wisconsin; Estados Unidos
Fil: Westerhoff, S.. University of Wisconsin; Estados Unidos
Fil: Whelan, B. J.. University of Adelaide; Australia
Fil: Whitehorn, N.. University of California at Berkeley; Estados Unidos
Fil: Wickmann, S.. Rwth Aachen University; Alemania
Fil: Wiebe, K.. Johannes Gutenberg Universitat Mainz; Alemania
Fil: Wiebusch, C. H.. Rwth Aachen University; Alemania
Fil: Wille, L.. University of Wisconsin; Estados Unidos
Fil: Williams, D. R.. University of Alabama at Birmingahm; Estados Unidos
Fil: Wills, L.. Drexel University; Estados Unidos
Fil: Wissing, H.. University of Maryland; Estados Unidos
Fil: Wolf, M.. Stockholms Universitet; Suecia
Fil: Wood, T. R.. University of Alberta; Canadá
Fil: Woschnagg, K.. University of California at Berkeley; Estados Unidos
Fil: Xu, D. L.. University of Wisconsin; Estados Unidos
Fil: Xu, X. W.. Southern University; Estados Unidos
Fil: Xu, Y.. Stony Brook University; Estados Unidos
Fil: Yanez, J. P.. Deutsches Elektronen-Synchrotron; Alemania
Fil: Yodh, G.. University of California at Irvine; Estados Unidos
Fil: Yoshida, S.. Chiba University; Japón
Fil: Zoll, M.. Stockholms Universitet; Suecia - Materia
-
NEUTRINO ASTRONOMY
IceCube
Neutrino angular resolution - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/63561
Ver los metadatos del registro completo
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Lowering IceCube's energy threshold for point source searches in the Southern SkyAartsen, M. G.Abraham, K.Ackermann, M.Adams, J.Aguilar, J. A.Golup, Geraldina TamaraWallace, A.Wallraff, M.Wandkowsky, N.Weaver, Ch.Wendt, C.Westerhoff, S.Whelan, B. J.Whitehorn, N.Wickmann, S.Wiebe, K.Wiebusch, C. H.Wille, L.Williams, D. R.Wills, L.Wissing, H.Wolf, M.Wood, T. R.Woschnagg, K.Xu, D. L.Xu, X. W.Xu, Y.Yanez, J. P.Yodh, G.Yoshida, S.Zoll, M.NEUTRINO ASTRONOMYIceCubeNeutrino angular resolutionhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Observation of a point source of astrophysical neutrinos would be a "smoking gun" signature of a cosmic-ray accelerator. While IceCube has recently discovered a diffuse flux of astrophysical neutrinos, no localized point source has been observed. Previous IceCube searches for point sources in the southern sky were restricted by either an energy threshold above a few hundred TeV or poor neutrino angular resolution. Here we present a search for southern sky point sources with greatly improved sensitivities to neutrinos with energies below 100 TeV. By selecting charged-current ν μ interacting inside the detector, we reduce the atmospheric background while retaining efficiency for astrophysical neutrino-induced events reconstructed with sub-degree angular resolution. The new event sample covers three years of detector data and leads to a factor of 10 improvement in sensitivity to point sources emitting below 100 TeV in the southern sky. No statistically significant evidence of point sources was found, and upper limits are set on neutrino emission from individual sources. A posteriori analysis of the highest-energy (~100 TeV) starting event in the sample found that this event alone represents a 2.8σ deviation from the hypothesis that the data consists only of atmospheric background.Fil: Aartsen, M. G.. University of Adelaide; AustraliaFil: Abraham, K.. Technische Universität München; AlemaniaFil: Ackermann, M.. Deutsches Elektronen-Synchrotron; AlemaniaFil: Adams, J.. University Of Canterbury; Nueva ZelandaFil: Aguilar, J. A.. Université Libre de Bruxelles; BélgicaFil: Golup, Geraldina Tamara. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Wallace, A.. University of Adelaide; AustraliaFil: Wallraff, M.. Rwth Aachen University; AlemaniaFil: Wandkowsky, N.. University of Wisconsin; Estados UnidosFil: Weaver, Ch.. University of Alberta; CanadáFil: Wendt, C.. University of Wisconsin; Estados UnidosFil: Westerhoff, S.. University of Wisconsin; Estados UnidosFil: Whelan, B. J.. University of Adelaide; AustraliaFil: Whitehorn, N.. University of California at Berkeley; Estados UnidosFil: Wickmann, S.. Rwth Aachen University; AlemaniaFil: Wiebe, K.. Johannes Gutenberg Universitat Mainz; AlemaniaFil: Wiebusch, C. H.. Rwth Aachen University; AlemaniaFil: Wille, L.. University of Wisconsin; Estados UnidosFil: Williams, D. R.. University of Alabama at Birmingahm; Estados UnidosFil: Wills, L.. Drexel University; Estados UnidosFil: Wissing, H.. University of Maryland; Estados UnidosFil: Wolf, M.. Stockholms Universitet; SueciaFil: Wood, T. R.. University of Alberta; CanadáFil: Woschnagg, K.. University of California at Berkeley; Estados UnidosFil: Xu, D. L.. University of Wisconsin; Estados UnidosFil: Xu, X. W.. Southern University; Estados UnidosFil: Xu, Y.. Stony Brook University; Estados UnidosFil: Yanez, J. P.. Deutsches Elektronen-Synchrotron; AlemaniaFil: Yodh, G.. University of California at Irvine; Estados UnidosFil: Yoshida, S.. Chiba University; JapónFil: Zoll, M.. Stockholms Universitet; SueciaIOP Publishing2016-06-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63561Aartsen, M. G.; Abraham, K.; Ackermann, M.; Adams, J.; Aguilar, J. A.; et al.; Lowering IceCube's energy threshold for point source searches in the Southern Sky; IOP Publishing; Astrophysical Journal; 824; 2; 21-6-2016; 1-190004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/2041-8205/824/2/L28info:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8205/824/2/L28info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1605.00163info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:53:13Zoai:ri.conicet.gov.ar:11336/63561instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:53:13.866CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Lowering IceCube's energy threshold for point source searches in the Southern Sky |
| title |
Lowering IceCube's energy threshold for point source searches in the Southern Sky |
| spellingShingle |
Lowering IceCube's energy threshold for point source searches in the Southern Sky Aartsen, M. G. NEUTRINO ASTRONOMY IceCube Neutrino angular resolution |
| title_short |
Lowering IceCube's energy threshold for point source searches in the Southern Sky |
| title_full |
Lowering IceCube's energy threshold for point source searches in the Southern Sky |
| title_fullStr |
Lowering IceCube's energy threshold for point source searches in the Southern Sky |
| title_full_unstemmed |
Lowering IceCube's energy threshold for point source searches in the Southern Sky |
| title_sort |
Lowering IceCube's energy threshold for point source searches in the Southern Sky |
| dc.creator.none.fl_str_mv |
Aartsen, M. G. Abraham, K. Ackermann, M. Adams, J. Aguilar, J. A. Golup, Geraldina Tamara Wallace, A. Wallraff, M. Wandkowsky, N. Weaver, Ch. Wendt, C. Westerhoff, S. Whelan, B. J. Whitehorn, N. Wickmann, S. Wiebe, K. Wiebusch, C. H. Wille, L. Williams, D. R. Wills, L. Wissing, H. Wolf, M. Wood, T. R. Woschnagg, K. Xu, D. L. Xu, X. W. Xu, Y. Yanez, J. P. Yodh, G. Yoshida, S. Zoll, M. |
| author |
Aartsen, M. G. |
| author_facet |
Aartsen, M. G. Abraham, K. Ackermann, M. Adams, J. Aguilar, J. A. Golup, Geraldina Tamara Wallace, A. Wallraff, M. Wandkowsky, N. Weaver, Ch. Wendt, C. Westerhoff, S. Whelan, B. J. Whitehorn, N. Wickmann, S. Wiebe, K. Wiebusch, C. H. Wille, L. Williams, D. R. Wills, L. Wissing, H. Wolf, M. Wood, T. R. Woschnagg, K. Xu, D. L. Xu, X. W. Xu, Y. Yanez, J. P. Yodh, G. Yoshida, S. Zoll, M. |
| author_role |
author |
| author2 |
Abraham, K. Ackermann, M. Adams, J. Aguilar, J. A. Golup, Geraldina Tamara Wallace, A. Wallraff, M. Wandkowsky, N. Weaver, Ch. Wendt, C. Westerhoff, S. Whelan, B. J. Whitehorn, N. Wickmann, S. Wiebe, K. Wiebusch, C. H. Wille, L. Williams, D. R. Wills, L. Wissing, H. Wolf, M. Wood, T. R. Woschnagg, K. Xu, D. L. Xu, X. W. Xu, Y. Yanez, J. P. Yodh, G. Yoshida, S. Zoll, M. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
NEUTRINO ASTRONOMY IceCube Neutrino angular resolution |
| topic |
NEUTRINO ASTRONOMY IceCube Neutrino angular resolution |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
Observation of a point source of astrophysical neutrinos would be a "smoking gun" signature of a cosmic-ray accelerator. While IceCube has recently discovered a diffuse flux of astrophysical neutrinos, no localized point source has been observed. Previous IceCube searches for point sources in the southern sky were restricted by either an energy threshold above a few hundred TeV or poor neutrino angular resolution. Here we present a search for southern sky point sources with greatly improved sensitivities to neutrinos with energies below 100 TeV. By selecting charged-current ν μ interacting inside the detector, we reduce the atmospheric background while retaining efficiency for astrophysical neutrino-induced events reconstructed with sub-degree angular resolution. The new event sample covers three years of detector data and leads to a factor of 10 improvement in sensitivity to point sources emitting below 100 TeV in the southern sky. No statistically significant evidence of point sources was found, and upper limits are set on neutrino emission from individual sources. A posteriori analysis of the highest-energy (~100 TeV) starting event in the sample found that this event alone represents a 2.8σ deviation from the hypothesis that the data consists only of atmospheric background. Fil: Aartsen, M. G.. University of Adelaide; Australia Fil: Abraham, K.. Technische Universität München; Alemania Fil: Ackermann, M.. Deutsches Elektronen-Synchrotron; Alemania Fil: Adams, J.. University Of Canterbury; Nueva Zelanda Fil: Aguilar, J. A.. Université Libre de Bruxelles; Bélgica Fil: Golup, Geraldina Tamara. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina Fil: Wallace, A.. University of Adelaide; Australia Fil: Wallraff, M.. Rwth Aachen University; Alemania Fil: Wandkowsky, N.. University of Wisconsin; Estados Unidos Fil: Weaver, Ch.. University of Alberta; Canadá Fil: Wendt, C.. University of Wisconsin; Estados Unidos Fil: Westerhoff, S.. University of Wisconsin; Estados Unidos Fil: Whelan, B. J.. University of Adelaide; Australia Fil: Whitehorn, N.. University of California at Berkeley; Estados Unidos Fil: Wickmann, S.. Rwth Aachen University; Alemania Fil: Wiebe, K.. Johannes Gutenberg Universitat Mainz; Alemania Fil: Wiebusch, C. H.. Rwth Aachen University; Alemania Fil: Wille, L.. University of Wisconsin; Estados Unidos Fil: Williams, D. R.. University of Alabama at Birmingahm; Estados Unidos Fil: Wills, L.. Drexel University; Estados Unidos Fil: Wissing, H.. University of Maryland; Estados Unidos Fil: Wolf, M.. Stockholms Universitet; Suecia Fil: Wood, T. R.. University of Alberta; Canadá Fil: Woschnagg, K.. University of California at Berkeley; Estados Unidos Fil: Xu, D. L.. University of Wisconsin; Estados Unidos Fil: Xu, X. W.. Southern University; Estados Unidos Fil: Xu, Y.. Stony Brook University; Estados Unidos Fil: Yanez, J. P.. Deutsches Elektronen-Synchrotron; Alemania Fil: Yodh, G.. University of California at Irvine; Estados Unidos Fil: Yoshida, S.. Chiba University; Japón Fil: Zoll, M.. Stockholms Universitet; Suecia |
| description |
Observation of a point source of astrophysical neutrinos would be a "smoking gun" signature of a cosmic-ray accelerator. While IceCube has recently discovered a diffuse flux of astrophysical neutrinos, no localized point source has been observed. Previous IceCube searches for point sources in the southern sky were restricted by either an energy threshold above a few hundred TeV or poor neutrino angular resolution. Here we present a search for southern sky point sources with greatly improved sensitivities to neutrinos with energies below 100 TeV. By selecting charged-current ν μ interacting inside the detector, we reduce the atmospheric background while retaining efficiency for astrophysical neutrino-induced events reconstructed with sub-degree angular resolution. The new event sample covers three years of detector data and leads to a factor of 10 improvement in sensitivity to point sources emitting below 100 TeV in the southern sky. No statistically significant evidence of point sources was found, and upper limits are set on neutrino emission from individual sources. A posteriori analysis of the highest-energy (~100 TeV) starting event in the sample found that this event alone represents a 2.8σ deviation from the hypothesis that the data consists only of atmospheric background. |
| publishDate |
2016 |
| dc.date.none.fl_str_mv |
2016-06-21 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/63561 Aartsen, M. G.; Abraham, K.; Ackermann, M.; Adams, J.; Aguilar, J. A.; et al.; Lowering IceCube's energy threshold for point source searches in the Southern Sky; IOP Publishing; Astrophysical Journal; 824; 2; 21-6-2016; 1-19 0004-637X CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/63561 |
| identifier_str_mv |
Aartsen, M. G.; Abraham, K.; Ackermann, M.; Adams, J.; Aguilar, J. A.; et al.; Lowering IceCube's energy threshold for point source searches in the Southern Sky; IOP Publishing; Astrophysical Journal; 824; 2; 21-6-2016; 1-19 0004-637X CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/2041-8205/824/2/L28 info:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8205/824/2/L28 info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1605.00163 |
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openAccess |
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IOP Publishing |
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IOP Publishing |
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