All-sky search for time-integrated neutrino emission from astrophysical sources with 7 years of IceCube data

M.G. Aartsen; K. Abraham; M. Ackermann; J.A. Aguilar; Markus Tobias Ahlers; M. Ahrens; D. Altmann; K. Andeen; T. Anderson; I. Ansseau; G. Anton; Morten Ankersen Medici; David Jason Koskinen; Michael James Larson; Subir Sarkar; M Rameez; G. Yodh; S. Yoshida; M. Zoll; E. Hansen

doi:10.3847/1538-4357/835/2/151

All-sky search for time-integrated neutrino emission from astrophysical sources with 7 years of IceCube data

M.G. Aartsen, K. Abraham, M. Ackermann, J.A. Aguilar, Markus Tobias Ahlers, M. Ahrens, D. Altmann, K. Andeen, T. Anderson, I. Ansseau, G. Anton, Morten Ankersen Medici, David Jason Koskinen, Michael James Larson, Subir Sarkar, M Rameez, G. Yodh, S. Yoshida, M. Zoll, E. Hansen

159 Citations (Scopus)

Abstract

Since the recent detection of an astrophysical flux of high-energy neutrinos, the question of its origin has not yet fully been answered. Much of what is known about this flux comes from a small event sample of high neutrino purity, good energy resolution, but large angular uncertainties. In searches for point-like sources, on the other hand, the best performance is given by using large statistics and good angular reconstructions. Track-like muon events produced in neutrino interactions satisfy these requirements. We present here the results of searches for point-like sources with neutrinos using data acquired by the IceCube detector over 7 yr from 2008 to 2015. The discovery potential of the analysis in the northern sky is now significantly below E² _v doφ/dE_v = 10^-12 TeV cm^-2 s^-1, on average 38% lower than the sensitivity of the previously published analysis of 4 yr exposure. No significant clustering of neutrinos above background expectation was observed, and implications for prominent neutrino source candidates are discussed.

Original language	English
Article number	151
Journal	Astrophysical Journal
Volume	835
Issue number	2
ISSN	0004-637X
DOIs	https://doi.org/10.3847/1538-4357/835/2/151
Publication status	Published - 1 Feb 2017

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Aartsen, M. G., Abraham, K., Ackermann, M., Aguilar, J. A., Ahlers, M. T., Ahrens, M., Altmann, D., Andeen, K., Anderson, T., Ansseau, I., Anton, G., Medici, M. A., Koskinen, D. J., Larson, M. J., Sarkar, S., Rameez, M., Yodh, G., Yoshida, S., Zoll, M., & Hansen, E. (2017). All-sky search for time-integrated neutrino emission from astrophysical sources with 7 years of IceCube data. Astrophysical Journal, 835(2), Article 151. https://doi.org/10.3847/1538-4357/835/2/151

Aartsen, MG, Abraham, K, Ackermann, M, Aguilar, JA, Ahlers, MT, Ahrens, M, Altmann, D, Andeen, K, Anderson, T, Ansseau, I, Anton, G, Medici, MA, Koskinen, DJ, Larson, MJ, Sarkar, S, Rameez, M, Yodh, G, Yoshida, S, Zoll, M & Hansen, E 2017, 'All-sky search for time-integrated neutrino emission from astrophysical sources with 7 years of IceCube data', Astrophysical Journal, vol. 835, no. 2, 151. https://doi.org/10.3847/1538-4357/835/2/151

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title = "All-sky search for time-integrated neutrino emission from astrophysical sources with 7 years of IceCube data",

abstract = "Since the recent detection of an astrophysical flux of high-energy neutrinos, the question of its origin has not yet fully been answered. Much of what is known about this flux comes from a small event sample of high neutrino purity, good energy resolution, but large angular uncertainties. In searches for point-like sources, on the other hand, the best performance is given by using large statistics and good angular reconstructions. Track-like muon events produced in neutrino interactions satisfy these requirements. We present here the results of searches for point-like sources with neutrinos using data acquired by the IceCube detector over 7 yr from 2008 to 2015. The discovery potential of the analysis in the northern sky is now significantly below E2 v doφ/dEv = 10-12 TeV cm-2 s-1, on average 38% lower than the sensitivity of the previously published analysis of 4 yr exposure. No significant clustering of neutrinos above background expectation was observed, and implications for prominent neutrino source candidates are discussed.",

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T1 - All-sky search for time-integrated neutrino emission from astrophysical sources with 7 years of IceCube data

AU - Aartsen, M.G.

AU - Abraham, K.

AU - Ackermann, M.

AU - Aguilar, J.A.

AU - Ahlers, Markus Tobias

AU - Ahrens, M.

AU - Altmann, D.

AU - Andeen, K.

AU - Anderson, T.

AU - Ansseau, I.

AU - Anton, G.

AU - Medici, Morten Ankersen

AU - Koskinen, David Jason

AU - Larson, Michael James

AU - Sarkar, Subir

AU - Rameez, M

AU - Yodh, G.

AU - Yoshida, S.

AU - Zoll, M.

AU - Hansen, E.

PY - 2017/2/1

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N2 - Since the recent detection of an astrophysical flux of high-energy neutrinos, the question of its origin has not yet fully been answered. Much of what is known about this flux comes from a small event sample of high neutrino purity, good energy resolution, but large angular uncertainties. In searches for point-like sources, on the other hand, the best performance is given by using large statistics and good angular reconstructions. Track-like muon events produced in neutrino interactions satisfy these requirements. We present here the results of searches for point-like sources with neutrinos using data acquired by the IceCube detector over 7 yr from 2008 to 2015. The discovery potential of the analysis in the northern sky is now significantly below E2 v doφ/dEv = 10-12 TeV cm-2 s-1, on average 38% lower than the sensitivity of the previously published analysis of 4 yr exposure. No significant clustering of neutrinos above background expectation was observed, and implications for prominent neutrino source candidates are discussed.

AB - Since the recent detection of an astrophysical flux of high-energy neutrinos, the question of its origin has not yet fully been answered. Much of what is known about this flux comes from a small event sample of high neutrino purity, good energy resolution, but large angular uncertainties. In searches for point-like sources, on the other hand, the best performance is given by using large statistics and good angular reconstructions. Track-like muon events produced in neutrino interactions satisfy these requirements. We present here the results of searches for point-like sources with neutrinos using data acquired by the IceCube detector over 7 yr from 2008 to 2015. The discovery potential of the analysis in the northern sky is now significantly below E2 v doφ/dEv = 10-12 TeV cm-2 s-1, on average 38% lower than the sensitivity of the previously published analysis of 4 yr exposure. No significant clustering of neutrinos above background expectation was observed, and implications for prominent neutrino source candidates are discussed.

U2 - 10.3847/1538-4357/835/2/151

DO - 10.3847/1538-4357/835/2/151

M3 - Journal article

SN - 0004-637X

VL - 835

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 151

ER -

All-sky search for time-integrated neutrino emission from astrophysical sources with 7 years of IceCube data

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