2018ApJ...867L..27A

Query : 2018ApJ...867L..27A

2018ApJ...867L..27A - Astrophys. J., 867, L27-L27 (2018/November-2)

Testing a reported correlation between arrival directions of ultra-high-energy cosmic rays and a flux pattern from nearby starburst galaxies using Telescope Array data.

ABBASI R.U., ABE M., ABU-ZAYYAD T., ALLEN M., AZUMA R., BARCIKOWSKI E., BELZ J.W., BERGMAN D.R., BLAKE S.A., CADY R., CHEON B.G., CHIBA J., CHIKAWA M., DI MATTEO A., FUJII T., FUJITA K., FUKUSHIMA M., FURLICH G., GOTO T., HANLON W., HAYASHI M., HAYASHI Y., HAYASHIDA N., HIBINO K., HONDA K., IKEDA D., INOUE N., ISHII T., ISHIMORI R., ITO H., IVANOV D., JEONG H.M., JEONG S., JUI C.C.H., KADOTA K., KAKIMOTO F., KALASHEV O., KASAHARA K., KAWAI H., KAWAKAMI S., KAWANA S., KAWATA K., KIDO E., KIM H.B., KIM J.H., KIM J.H., KISHIGAMI S., KITAMURA S., KITAMURA Y., KUZMIN V., KUZNETSOV M., KWON Y.J., LEE K.H., LUBSANDORZHIEV B., LUNDQUIST J.P., MACHIDA K., MARTENS K., MATSUYAMA T., MATTHEWS J.N., MAYTA R., MINAMINO M., MUKAI K., MYERS I., NAGASAWA K., NAGATAKI S., NAKAMURA R., NAKAMURA T., NONAKA T., ODA H., OGIO S., OGURA J., OHNISHI M., OHOKA H., OKUDA T., OMURA Y., ONO M., ONOGI R., OSHIMA A., OZAWA S., PARK I.H., PSHIRKOV M.S., REMINGTON J., RODRIGUEZ D.C., RUBTSOV G., RYU D., SAGAWA H., SAHARA R., SAITO K., SAITO Y., SAKAKI N., SAKURAI N., SCOTT L.M., SEKI T., SEKINO K., SHAH P.D., SHIBATA F., SHIBATA T., SHIMODAIRA H., SHIN B.K., SHIN H.S., SMITH J.D., SOKOLSKY P., STOKES B.T., STRATTON S.R., STROMAN T.A., SUZAWA T., TAKAGI Y., TAKAHASHI Y., TAKAMURA M., TAKEDA M., TAKEISHI R., TAKETA A., TAKITA M., TAMEDA Y., TANAKA H., TANAKA K., TANAKA M., THOMAS S.B., THOMSON G.B., TINYAKOV P., TKACHEV I., TOKUNO H., TOMIDA T., TROITSKY S., TSUNESADA Y., TSUTSUMI K., UCHIHORI Y., UDO S., URBAN F., WONG T., YAMAMOTO M., YAMANE R., YAMAOKA H., YAMAZAKI K., YANG J., YASHIRO K., YONEDA Y., YOSHIDA S., YOSHII H., ZHEZHER Y. and ZUNDEL Z.

Abstract (from CDS):

The Pierre Auger Collaboration (Auger) recently reported a correlation between the arrival directions of cosmic rays with energies above 39 EeV and the flux pattern of 23 nearby starburst galaxies (SBGs). In this Letter, we tested the same hypothesis using cosmic rays detected by the Telescope Array experiment (TA) in the 9 yr period from 2008 May to 2017 May. Unlike the Auger analysis, we did not optimize the parameter values but kept them fixed to the best-fit values found by Auger, namely 9.7% for the anisotropic fraction of cosmic rays assumed to originate from the SBGs in the list and 12.°9 for the angular scale of the correlations. The energy threshold that we adopted is 43 EeV, corresponding to 39 EeV in Auger when taking into account the energy-scale difference between two experiments. We find that the TA data is compatible with isotropy to within 1.1σ and with the Auger result to within 1.4σ, meaning that it is not capable to discriminate between these two hypotheses.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): astroparticle physics - cosmic rays - galaxies: starburst - methods: data analysis

Simbad objects: 30

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Number of rows : 30
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
4 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
5 NGC 660 Sy2 01 43 02.350 +13 38 44.45   12.02 11.16     ~ 588 2
6 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
7 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
8 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1987 2
9 IC 342 AGN 03 46 48.514 +68 05 45.98   10.5       ~ 1579 1
10 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
11 NGC 2146 AGN 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 765 2
12 NGC 2903 AGN 09 32 10.111 +21 30 02.99 10.44 9.75 9.07 8.68   ~ 1204 3
13 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
14 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1476 3
15 M 108 AGN 11 11 30.967 +55 40 26.84   10.70       ~ 497 1
16 M 66 AGN 11 20 15.0 +12 59 29 9.85 9.65 8.92     ~ 1509 4
17 NGC 3628 LIN 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 853 3
18 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
19 NGC 4631 GiC 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1154 3
20 Z 294-4 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 2096 3
21 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
22 M 63 LIN 13 15 49.2741893928 +42 01 45.728076108   9.34 8.59 8.35   ~ 1292 2
23 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
24 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
25 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
26 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
27 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
28 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
29 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
30 NAME Local Group GrG ~ ~           ~ 9325 0

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