Search for steady point-like sources in the astrophysical muon neutrino flux with 8 years of IceCube data - INSPIRE

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Search for steady point-like sources in the astrophysical muon neutrino flux with 8 years of IceCube data

IceCube

Collaboration

Nov 19, 2018

Published in:

Eur.Phys.J.C 79 (2019) 3, 234

Published: Mar 13, 2019

e-Print:

1811.07979 [hep-ph]

DOI:

10.1140/epjc/s10052-019-6680-0

Experiments:

ICECUBE

View in:

ADS Abstract Service

reference search159 citations

Citations per year

Abstract: (Springer)

The IceCube Collaboration has observed a high-energy astrophysical neutrino flux and recently found evidence for neutrino emission from the blazar TXS 0506

+

056. These results open a new window into the high-energy universe. However, the source or sources of most of the observed flux of astrophysical neutrinos remains uncertain. Here, a search for steady point-like neutrino sources is performed using an unbinned likelihood analysis. The method searches for a spatial accumulation of muon-neutrino events using the very high-statistics sample of about 497,000 neutrinos recorded by IceCube between 2009 and 2017. The median angular resolution is

\sim 1^\circ

at 1 TeV and improves to

\sim 0.3^\circ

for neutrinos with an energy of 1 PeV. Compared to previous analyses, this search is optimized for point-like neutrino emission with the same flux-characteristics as the observed astrophysical muon-neutrino flux and introduces an improved event-reconstruction and parametrization of the background. The result is an improvement in sensitivity to the muon-neutrino flux compared to the previous analysis of

\sim 35\%

assuming an

E^{-2}

spectrum. The sensitivity on the muon-neutrino flux is at a level of

E^2 \mathrm {d} N /\mathrm {d} E = 3\cdot 10^{-13}\,\mathrm {TeV}\,\mathrm {cm}^{-2}\,\mathrm {s}^{-1}

. No new evidence for neutrino sources is found in a full sky scan and in an a priori candidate source list that is motivated by gamma-ray observations. Furthermore, no significant excesses above background are found from populations of sub-threshold sources. The implications of the non-observation for potential source classes are discussed.

neutrino: flux
IceCube
sensitivity
muon
angular resolution
background
blazar

References(61)

Figures(4)

[1]

Particle astrophysics with high-energy neutrinos

- Phys.Rept. 258 (1995) 173-236,
- Phys.Rept. 271 (1996) 355-356 (erratum)
•
e-Print:
- hep-ph/9410384
•
DOI:
- 10.1016/0370-1573(95)00003-Y

[2]

The Intrinsic and oscillated astrophysical neutrino flavor ratios

- Mod.Phys.Lett.A 21 (2006) 1049-1066
•
e-Print:
- hep-ph/0505017
•
DOI:
- 10.1142/S021773230602038X

[3]

Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Science 342 (2013) 1242856
•
e-Print:
- 1311.5238
•
DOI:
- 10.1126/science.1242856

[7]

The IceCube Neutrino Observatory - Contributions to ICRC 2017 Part II: Properties of the Atmospheric and Astrophysical Neutrino Flux

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

e-Print:
- 1710.01191

[5]

Evidence for Astrophysical Muon Neutrinos from the Northern Sky with IceCube

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Phys.Rev.Lett. 115 (2015) 8, 081102
•
e-Print:
- 1507.04005
•
DOI:
- 10.1103/PhysRevLett.115.081102

[6]

Observation and Characterization of a Cosmic Muon Neutrino Flux from the Northern Hemisphere using six years of IceCube data

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Astrophys.J. 833 (2016) 1, 3
•
e-Print:
- 1607.08006
•
DOI:
- 10.3847/0004-637X/833/1/3

[7]

The IceCube Neutrino Observatory - Contributions to ICRC 2017 Part II: Properties of the Atmospheric and Astrophysical Neutrino Flux

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

e-Print:
- 1710.01191

[8]

Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert

IceCube

Collaboration

•

M.G. Aartsen
(
- Canterbury U.
)

et al.

- Science 361 (2018) 6398, 147-151
•
e-Print:
- 1807.08794
•
DOI:
- 10.1126/science.aat2890

[9]

Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A

Collaborations

•

M.G. Aartsen
(
- Canterbury U.
)

et al.

- Science 361 (2018) 6398, eaat1378
•
e-Print:
- 1807.08816
•
DOI:
- 10.1126/science.aat1378

[10]

The contribution of Fermi-2LAC blazars to the diffuse TeV-PeV neutrino flux

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Astrophys.J. 835 (2017) 1, 45
•
e-Print:
- 1611.03874
•
DOI:
- 10.3847/1538-4357/835/1/45

[11]

Search for Prompt Neutrino Emission from Gamma-Ray Bursts with IceCube

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Astrophys.J.Lett. 805 (2015) 1, L5
•
e-Print:
- 1412.6510
•
DOI:
- 10.1088/2041-8205/805/1/L5

[12]

Searches for Time Dependent Neutrino Sources with IceCube Data from 2008 to 2012

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Astrophys.J. 807 (2015) 1, 46
•
e-Print:
- 1503.00598
•
DOI:
- 10.1088/0004-637X/807/1/46

[13]

The First Combined Search for Neutrino Point-sources in the Southern Hemisphere With the Antares and Icecube Neutrino Telescopes

ANTARES and
IceCube

Collaborations

•

S. Adrian-Martinez
(
- Valencia, Polytechnic U.
)

et al.

- Astrophys.J. 823 (2016) 1, 65
•
e-Print:
- 1511.02149
•
DOI:
- 10.3847/0004-637X/823/1/65

[14]

Lowering IceCube's Energy Threshold for Point Source Searches in the Southern Sky

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Astrophys.J.Lett. 824 (2016) 2, L28
•
e-Print:
- 1605.00163
•
DOI:
- 10.3847/2041-8205/824/2/L28

[15]

Very High-Energy Gamma-Ray Follow-Up Program Using Neutrino Triggers from IceCube

Collaborations

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- JINST 11 (2016) 11, P11009
•
e-Print:
- 1610.01814
•
DOI:
- 10.1088/1748-0221/11/11/P11009

[16]

All-sky Search for Time-integrated Neutrino Emission from Astrophysical Sources with 7 yr of IceCube Data

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Astrophys.J. 835 (2017) 2, 151
•
e-Print:
- 1609.04981
•
DOI:
- 10.3847/1538-4357/835/2/151

[17]

Extending the search for muon neutrinos coincident with gamma-ray bursts in IceCube data

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Astrophys.J. 843 (2017) 2, 112
•
e-Print:
- 1702.06868
•
DOI:
- 10.3847/1538-4357/aa7569

[18]

Multiwavelength follow-up of a rare IceCube neutrino multiplet

et al.

- Astron.Astrophys. 607 (2017) A115
•
e-Print:
- 1702.06131
•
DOI:
- 10.1051/0004-6361/201730620

[19]

Search for High-energy Neutrinos from Gravitational Wave Event GW151226 and Candidate LVT151012 with ANTARES and IceCube

Collaborations

•

A. Albert
(
- Haute Alsace U., GRPHE
)

et al.

- Phys.Rev.D 96 (2017) 2, 022005
•
e-Print:
- 1703.06298
•
DOI:
- 10.1103/PhysRevD.96.022005

[20]

Search for astrophysical sources of neutrinos using cascade events in IceCube

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Astrophys.J. 846 (2017) 2, 136
•
e-Print:
- 1705.02383
•
DOI:
- 10.3847/1538-4357/aa8508

[21]

Constraints on Galactic Neutrino Emission with Seven Years of IceCube Data

IceCube

Collaboration

•

M.G. Aartsen

et al.

- Astrophys.J. 849 (2017) 1, 67
•
e-Print:
- 1707.03416
•
DOI:
- 10.3847/1538-4357/aa8dfb

[22]

Time-Integrated Searches for Point-like Sources of Neutrinos with the 40-String IceCube Detector

IceCube

Collaboration

•

R. Abbasi
(
- Wisconsin U., Madison
)

et al.

- Astrophys.J. 732 (2011) 18
•
e-Print:
- 1012.2137
•
DOI:
- 10.1088/0004-637X/732/1/18

[23]

Search for Time-independent Neutrino Emission from Astrophysical Sources with 3 yr of IceCube Data

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Astrophys.J. 779 (2013) 132
•
e-Print:
- 1307.6669
•
DOI:
- 10.1088/0004-637X/779/2/132

[24]

Searches for Extended and Point-like Neutrino Sources with Four Years of IceCube Data

IceCube

Collaboration

•

M.G. Aartsen

et al.

- Astrophys.J. 796 (2014) 2, 109
•
e-Print:
- 1406.6757
•
DOI:
- 10.1088/0004-637X/796/2/109

[25]

First Year Performance of The IceCube Neutrino Telescope

IceCube

Collaboration

•

A. Achterberg
(
- Utrecht U.
)

et al.

- Astropart.Phys. 26 (2006) 155-173
•
e-Print:
- astro-ph/0604450
•
DOI:
- 10.1016/j.astropartphys.2006.06.007

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