2016ApJ...824L..28A


Query : 2016ApJ...824L..28A

2016ApJ...824L..28A - Astrophys. J., 824, L28-L28 (2016/June-3)

Lowering IceCube's energy threshold for point source searches in the southern sky.

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., ARLEN T.C., AUFFENBERG J., 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., BOERSMA D.J., BOHM C., BORNER M., BOS F., BOSE D., BOSER S., BOTNER O., BRAUN J., BRAYEUR L., BRETZ H.-P., BURGMAN A., BUZINSKY N., CASEY J., CASIER M., CHEUNG E., CHIRKIN D., CHRISTOV A., CLARK K., CLASSEN L., COENDERS S., COLLIN G.H., CONRAD J.M., COWEN D.F., CRUZ SILVA A.H., DAUGHHETEE J., DAVIS J.C., 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., EULER S., EVENSON P.A., FAHEY S., FAZELY A.R., FEINTZEIG J., FELDE J., FILIMONOV K., FINLEY C., FLIS S., FOSIG C.-C., FUCHS T., GAISSER T.K., GAIOR R., GALLAGHER J., GERHARDT L., GHORBANI K., GLADSTONE L., GLAGLA M., GLUSENKAMP T., GOLDSCHMIDT A., GOLUP G., GONZALEZ J.G., GORA D., GRANT D., GRIFFITH Z., HA C., 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., HOMEIER A., HOSHINA K., HUANG F., HUBER M., HUELSNITZ W., 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., 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., 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., MATIS H.S., MAUNU R., McNALLY F., MEAGHER K., MEDICI M., MEIER M., MELI A., MENNE T., MERINO G., MEURES T., MIARECKI S., MIDDELL E., MOHRMANN L., MONTARULI T., NAHNHAUER R., NAUMANN U., NEER G., NIEDERHAUSEN H., NOWICKI S.C., NYGREN D.R., OBERTACKE POLLMANN A., OLIVAS A., OMAIRAT A., O'MURCHADHA A., PALCZEWSKI T., PANDYA H., PANKOVA D.V., PENEK O., PEPPER J.A., PEREZ DE LOS HEROS C., PFENDNER C., PIELOTH D., PINAT E., POSSELT J., PRICE P.B., PRZYBYLSKI G.T., QUINNAN M., RAAB C., RADEL L., RAMEEZ M., RAWLINS K., REIMANN R., RELICH M., RESCONI E., RHODE W., RICHMAN M., RIEDEL B., ROBERTSON S., RONGEN M., ROTT C., RUHE T., RYCKBOSCH D., SABBATINI L., SANDROCK A., SANDROOS J., SARKAR S., SATALECKA K., SCHIMP M., SCHLUNDER P., SCHMIDT T., SCHOENEN S., SCHONEBERG S., SCHONWALD A., SCHUMACHER L., SECKEL D., SEUNARINE S., SOLDIN D., SONG M., SPICZAK G.M., SPIERING C., STAHLBERG M., STAMATIKOS 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., 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., VALLECORSA S., 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., 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. and ZOLL M.

Abstract (from CDS):

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.

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

Journal keyword(s): astroparticle physics - neutrinos

Simbad objects: 39

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Number of rows : 39
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 QSO B0347-121 BLL 03 49 23.1862105584 -11 59 27.366035532   18.74 18.2 17.46   ~ 245 1
2 WISEA J042840.41-375619.3 BLL 04 28 40.4241894720 -37 56 19.580735832   18.96 19.0 17.21   ~ 343 1
3 QSO J0457-2324 Bla 04 57 03.1791422424 -23 24 52.021129572   18.85 18.5 16.56   ~ 435 1
4 QSO B0537-441 BLL 05 38 50.36155950 -44 05 08.9390233   15.77 16.48 16   ~ 924 2
5 PKS J0550-3216 BLL 05 50 40.5705144672 -32 16 16.484718648   16.07 15.5     ~ 424 1
6 QSO J0730-116 Bla 07 30 19.11247452 -11 41 12.6006642     20.30 20.3   ~ 323 1
7 NAME Vela X Psr 08 33 08.880 -45 11 24.36           ~ 302 1
8 NAME Vela Jr SN SNR 08 52.0 -46 20           ~ 507 2
9 FGES J1023.3-5747 gam 10 23 15.18313 -57 46 34.7840           ~ 57 0
10 PMN J1103-2329 BLL 11 03 37.6150845072 -23 29 31.203773520   17.00 16.55 16.61   ~ 405 1
11 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
12 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 852 0
13 PSR J1301-6305 Psr 13 02 47.9992676 -63 10 48.001099           ~ 139 2
14 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
15 PSR J1357-6429 Psr 13 57 02.525 -64 29 29.89           ~ 171 1
16 QSO B1406-076 Bla 14 08 56.48120623 -07 52 26.6665312   20.3 18.4     ~ 336 1
17 ESO 134-11 HII 14 40 29 -62 38.7           ~ 585 1
18 QSO J1457-3539 BLL 14 57 26.71171449 -35 39 09.9716148   17.95 19.50 18.93   ~ 167 1
19 HESS J1503-582 gam 15 03 -58.2           ~ 23 0
20 HESS J1507-622 gam 15 07 30 -62 25.0           ~ 34 0
21 V* BR Cir HXB 15 20 40.8532547060 -57 10 00.206639033   21.4 21.4     B5-A0I 849 1
22 AJG 44 Psr 16 17 33.000 -51 02 00.00           ~ 552 3
23 QSO J1626-2951 Bla 16 26 06.02084013 -29 51 26.9712990   18.41 20.5 17.6   ~ 452 1
24 IGR J16320-4751 HXB 16 32 01.76 -47 52 29.0           BN0.5Ia 188 0
25 V* V821 Ara LXB 17 02 49.3876391280 -48 47 23.087954544         15.322 ~ 2237 0
26 SNR G347.3-00.5 SNR 17 12 27 -39 41.2     12.27     ~ 761 1
27 QSO B1730-130 Bla 17 33 02.70578907 -13 04 49.5482119   18 19.50 18.78 17.39 ~ 1198 1
28 ESO 139-12 Sy2 17 37 39.0797034192 -59 56 26.644818696   13.61   12.84 12.7 ~ 83 0
29 HESS J1741-302 gam 17 41 15.79827 -30 22 37.2040           ~ 31 0
30 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
31 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
32 SNR G006.4-00.1 SNR 18 00 31.2011719 -23 25 48.001099           ~ 782 1
33 V* V479 Sct HXB 18 26 15.0561548880 -14 50 54.247274304 12.02 12.23 11.27 11.04   ON6V((f))z 613 2
34 SNR G023.3-00.3 SNR 18 34 51.80 -08 44 38.2           ~ 240 0
35 PSR J1838-0655 Psr 18 38 03.13 -06 55 33.4           ~ 114 1
36 PKS J2009-4849 BLL 20 09 25.3903899240 -48 49 53.725051056   15.75 12.81 11.41   ~ 604 1
37 QSO B2022-077 BLL 20 25 40.6602562440 -07 35 52.688047128   18.5       ~ 234 3
38 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1
39 QSO B2356-309 BLL 23 59 07.9034996184 -30 37 40.671098544   18.414 16.44 16.795   ~ 318 2

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