2016ApJ...833....3A

Query : 2016ApJ...833....3A

2016ApJ...833....3A - Astrophys. J., 833, 3-3 (2016/December-2)

Observation and characterization of a cosmic muon neutrino flux from the Northern Hemisphere using six years of IceCube data.

AARTSEN M.G., ABRAHAM K., ACKERMANN M., ADAMS J., AGUILAR J.A., AHLERS M., AHRENS M., ALTMANN D., ANDEEN K., ANDERSON T., ANSSEAU I., ANTON G., ARCHINGER M., ARGUELLES C., AUFFENBERG J., AXANI S., BAI X., BARWICK S.W., BAUM V., BAY R., BEATTY J.J., BECKER TJUS J., BECKER K.-H., BENZVI S., BERGHAUS P., BERLEY D., BERNARDINI E., BERNHARD A., BESSON D.Z., BINDER G., BINDIG D., BISSOK M., BLAUFUSS E., BLOT S., BOHM C., BORNER M., BOS F., BOSE D., BOSER S., BOTNER O., BRAUN J., BRAYEUR L., BRETZ H.-P., BURGMAN A., CARVER T., CASIER M., CHEUNG E., CHIRKIN D., CHRISTOV A., CLARK K., CLASSEN L., COENDERS S., COLLIN G.H., CONRAD J.M., COWEN D.F., CROSS R., DAY M., DE ANDRE J.P.A.M., DE CLERCQ C., DEL PINO ROSENDO E., DEMBINSKI H., DE RIDDER S., DESIATI P., DE VRIES K.D., DE WASSEIGE G., DE WITH M., DEYOUNG T., DIAZ-VELEZ J.C., DI LORENZO V., DUJMOVIC H., DUMM J.P., DUNKMAN M., EBERHARDT B., EHRHARDT T., EICHMANN B., ELLER P., EULER S., EVENSON P.A., FAHEY S., FAZELY A.R., FEINTZEIG J., FELDE J., FILIMONOV K., FINLEY C., FLIS S., FOSIG C.-C., FRANCKOWIAK A., FRIEDMAN E., FUCHS T., GAISSER T.K., GALLAGHER J., GERHARDT L., GHORBANI K., GIANG W., GLADSTONE L., GLAGLA M., GLUSENKAMP T., GOLDSCHMIDT A., GOLUP G., GONZALEZ J.G., GRANT D., GRIFFITH Z., HAACK C., HAJ ISMAIL A., HALLGREN A., HALZEN F., HANSEN E., HANSMANN B., HANSMANN T., HANSON K., HEBECKER D., HEEREMAN D., HELBING K., HELLAUER R., HICKFORD S., HIGNIGHT J., HILL G.C., HOFFMAN K.D., HOFFMANN R., HOLZAPFEL K., HOSHINA K., HUANG F., HUBER M., HULTQVIST K., IN S., ISHIHARA A., JACOBI E., JAPARIDZE G.S., JEONG M., JERO K., JONES B.J.P., JURKOVIC M., KAPPES A., KARG T., KARLE A., KATZ U., KAUER M., KEIVANI A., KELLEY J.L., KEMP J., KHEIRANDISH A., KIM M., KINTSCHER T., KIRYLUK J., KITTLER T., KLEIN S.R., KOHNEN G., KOIRALA R., KOLANOSKI H., KONIETZ R., KOPKE L., KOPPER C., KOPPER S., KOSKINEN D.J., KOWALSKI M., KRINGS K., KROLL M., KRUCKL G., KRUGER C., KUNNEN J., KUNWAR S., KURAHASHI N., KUWABARA T., LABARE M., LANFRANCHI J.L., LARSON M.J., LAUBER F., LENNARZ D., LESIAK-BZDAK M., LEUERMANN M., LEUNER J., LU L., LUNEMANN J., MADSEN J., MAGGI G., MAHN K.B.M., MANCINA S., MANDELARTZ M., MARUYAMA R., MASE K., MAUNU R., McNALLY F., MEAGHER K., MEDICI M., MEIER M., MELI A., MENNE T., MERINO G., MEURES T., MIARECKI S., MOHRMANN L., MONTARULI T., MOULAI M., NAHNHAUER R., NAUMANN U., NEER G., NIEDERHAUSEN H., NOWICKI S.C., NYGREN D.R., OBERTACKE POLLMANN A., OLIVAS A., O'MURCHADHA A., PALCZEWSKI T., PANDYA H., PANKOVA D.V., PEIFFER P., PENEK O., PEPPER J.A., PEREZ DE LOS HEROS C., PIELOTH D., PINAT E., PRICE P.B., PRZYBYLSKI G.T., QUINNAN M., RAAB C., RADEL L., RAMEEZ M., RAWLINS K., REIMANN R., RELETHFORD B., RELICH M., RESCONI E., RHODE W., RICHMAN M., RIEDEL B., ROBERTSON S., RONGEN M., ROTT C., RUHE T., RYCKBOSCH D., RYSEWYK D., SABBATINI L., SANCHEZ HERRERA S.E., SANDROCK A., SANDROOS J., SARKAR S., SATALECKA K., SCHIMP M., SCHLUNDER P., SCHMIDT T., SCHOENEN S., SCHONEBERG S., SCHUMACHER L., SECKEL D., SEUNARINE S., SOLDIN D., SONG M., SPICZAK G.M., SPIERING C., STAHLBERG M., STANEV T., STASIK A., STEUER A., STEZELBERGER T., STOKSTAD R.G., STOSSL A., STROM R., STROTJOHANN N.L., SULLIVAN G.W., SUTHERLAND M., TAAVOLA H., TABOADA I., TATAR J., TENHOLT F., TER-ANTONYAN S., TERLIUK A., TESIC G., TILAV S., TOALE P.A., TOBIN M.N., TOSCANO S., TOSI D., TSELENGIDOU M., TURCATI A., UNGER E., USNER M., VANDENBROUCKE J., VAN EIJNDHOVEN N., VANHEULE S., VAN ROSSEM M., VAN SANTEN J., VEENKAMP J., VEHRING M., VOGE M., VRAEGHE M., WALCK C., WALLACE A., WALLRAFF M., WANDKOWSKY N., WEAVER C., WEISS M.J., WENDT C., WESTERHOFF S., WHELAN B.J., WICKMANN S., WIEBE K., WIEBUSCH C.H., WILLE L., WILLIAMS D.R., WILLS L., WOLF M., WOOD T.R., WOOLSEY E., WOSCHNAGG K., XU D.L., XU X.W., XU Y., YANEZ J.P., YODH G., YOSHIDA S., ZOLL M. (The IceCube Collaboration)

Abstract (from CDS):

The IceCube Collaboration has previously discovered a high-energy astrophysical neutrino flux using neutrino events with interaction vertices contained within the instrumented volume of the IceCube detector. We present a complementary measurement using charged current muon neutrino events where the interaction vertex can be outside this volume. As a consequence of the large muon range the effective area is significantly larger but the field of view is restricted to the Northern Hemisphere. IceCube data from 2009 through 2015 have been analyzed using a likelihood approach based on the reconstructed muon energy and zenith angle. At the highest neutrino energies between 194 TeV and 7.8 PeV a significant astrophysical contribution is observed, excluding a purely atmospheric origin of these events at 5.6σsignificance. The data are well described by an isotropic, unbroken power-law flux with a normalization at 100 TeV neutrino energy of (0.90–0.27+0.30)×10–18 GeV–1 cm–2 s–1 sr–1 and a hard spectral index of γ=2.13±0.13. The observed spectrum is harder in comparison to previous IceCube analyses with lower energy thresholds which may indicate a break in the astrophysical neutrino spectrum of unknown origin. The highest-energy event observed has a reconstructed muon energy of (4.5±1.2) PeV which implies a probability of less than 0.005% for this event to be of atmospheric origin. Analyzing the arrival directions of all events with reconstructed muon energies above 200 TeV no correlation with known γ-ray sources was found. Using the high statistics of atmospheric neutrinos we report the current best constraints on a prompt atmospheric muon neutrino flux originating from charmed meson decays which is below 1.06 in units of the flux normalization of the model in Enberg et al.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): astroparticle physics - methods: data analysis - neutrinos - neutrinos

Nomenclature: Table 4: ICE2016 NN (Nos 1-29).

Simbad objects: 31

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Number of rows : 31
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ICE2016 1 ev 01 58 +01.2           ~ 2 0
2 ICE2016 23 ev 02 12 +10.2           ~ 9 0
3 ICE2016 16 ev 02 26 +19.1           ~ 10 0
4 ICE2016 9 ev 05 56 +00.5           ~ 2 0
5 ICE2016 29 ev 06 06 +12.2           ~ 7 0
6 ICE2016 21 ev 06 14 +14.5           ~ 2 0
7 ICE2016 28 ev 06 42 +04.6           ~ 7 0
8 ICE2016 26 ev 07 05 +01.3           ~ 6 0
9 ICE2016 27 ev 07 22 +11.4           ~ 2 0
10 ICE2016 4 ev 09 25.0 +47 48           ~ 2 0
11 ICE2016 20 ev 11 18 +28.0           ~ 8 0
12 ICE2016 17 ev 13 15 +32.0           ~ 14 0
13 ICE2016 19 ev 13 40 -02.4           ~ 2 0
14 ICE2016 15 ev 14 52 +01.9           ~ 5 0
15 ICE2016 22 ev 15 00 -04.4           ~ 3 0
16 ICE2016 12 ev 15 40 +20.3           ~ 7 0
17 ICE2016 6 ev 16 48 +15.2           ~ 3 0
18 ICE2016 7 ev 17 45 +13.4           ~ 4 0
19 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
20 ICE2016 13 ev 18 09 +35.5           ~ 11 0
21 4FGL J1857.7+0246e Psr 18 57 11.0 +02 40 00           ~ 59 0
22 ICE2016 10 ev 19 04 +03.1           ~ 3 0
23 ICE2016 24 ev 19 33 +32.8           ~ 2 0
24 ICE2016 2 ev 19 53 +11.7           ~ 3 0
25 ICE2016 5 ev 20 28 +21.0           ~ 6 0
26 ICE2016 11 ev 20 31 +01.0           ~ 2 0
27 ICE2016 14 ev 21 03 +05.3           ~ 3 0
28 ICE2016 18 ev 22 00 +01.6           ~ 8 0
29 ICE2016 8 ev 22 04 +11.1           ~ 2 0
30 ICE2016 3 ev 23 00 +23.6           ~ 6 0
31 ICE2016 25 ev 23 18 +18.1           ~ 4 0

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