2016ApJ...819..149A


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.27CET09:57:30

2016ApJ...819..149A - Astrophys. J., 819, 149 (2016/March-2)

Search for gamma-ray emission from the Coma cluster with six years of Fermi-LAT data.

ACKERMANN M., AJELLO M., ALBERT A., ATWOOD W.B., BALDINI L., BALLET J., BARBIELLINI G., BASTIERI D., BECHTOL K., BELLAZZINI R., BISSALDI E., BLANDFORD R.D., BLOOM E.D., BONINO R., BOTTACINI E., BREGEON J., BRUEL P., BUEHLER R., CALIANDRO G.A., CAMERON R.A., CARAGIULO M., CARAVEO P.A., CASANDJIAN J.M., CAVAZZUTI E., CECCHI C., CHARLES E., CHEKHTMAN A., CHIARO G., CIPRINI S., COHEN-TANUGI J., CONRAD J., CUTINI S., D'AMMANDO F., DE ANGELIS A., DE PALMA F., DESIANTE R., DIGEL S.W., DI VENERE L., DRELL P.S., FAVUZZI C., FEGAN S.J., FUKAZAWA Y., FUNK S., FUSCO P., GARGANO F., GASPARRINI D., GIGLIETTO N., GIORDANO F., GIROLETTI M., GODFREY G., GREEN D., GRENIER I.A., GUIRIEC S., HAYS E., HEWITT J.W., HORAN D., JOHANNESSON G., KUSS M., LARSSON S., LATRONICO L., LI J., LI L., LONGO F., LOPARCO F., LOVELLETTE M.N., LUBRANO P., MADEJSKI G.M., MALDERA S., MANFREDA A., MAYER M., MAZZIOTTA M.N., MICHELSON P.F., MITTHUMSIRI W., MIZUNO T., MONZANI M.E., MORSELLI A., MOSKALENKO I.V., MURGIA S., NUSS E., OHSUGI T., ORIENTI M., ORLANDO E., ORMES J.F., PANEQUE D., PESCE-ROLLINS M., PETROSIAN V., PIRON F., PIVATO G., PORTER T.A., RAINO S., RANDO R., RAZZANO M., REIMER A., REIMER O., SANCHEZ-CONDE M., SGRO C., SISKIND E.J., SPADA F., SPANDRE G., SPINELLI P., TAJIMA H., TAKAHASHI H., THAYER J.B., TIBALDO L., TORRES D.F., TOSTI G., TROJA E., VIANELLO G., WOOD K.S., ZIMMER S. (The Fermi-LAT Collaboration) and REPHAELI Y.

Abstract (from CDS):

We present results from γ-ray observations of the Coma cluster incorporating six years of Fermi-LAT data and the newly released "Pass 8" event-level analysis. Our analysis of the region reveals low-significance residual structures within the virial radius of the cluster that are too faint for a detailed investigation with the current data. Using a likelihood approach that is free of assumptions on the spectral shape we derive upper limits on the γ-ray flux that is expected from energetic particle interactions in the cluster. We also consider a benchmark spatial and spectral template motivated by models in which the observed radio halo is mostly emission by secondary electrons. In this case, the median expected and observed upper limits for the flux above 100 MeV are 1.7 x 10–9 ph cm–2 s–1 and 5.2 x 10–9 ph cm–2 s–1 respectively (the latter corresponds to residual emission at the level of 1.8σ). These bounds are comparable to or higher than predicted levels of hadronic gamma-ray emission in cosmic-ray (CR) models with or without reacceleration of secondary electrons, although direct comparisons are sensitive to assumptions regarding the origin and propagation mode of CRs and magnetic field properties. The minimal expected γ-ray flux from radio and star-forming galaxies within the Coma cluster is roughly an order of magnitude below the median sensitivity of our analysis.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: Coma - gamma rays: galaxies: clusters

Nomenclature: Table 3: xFGL JHHMM.m+DDMM N=4.

Errata: erratum vol. 860, art. 85 (2018)

Simbad objects: 29

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Number of rows : 29

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 3C 84 Sy2 03 19 48.1597607660 +41 30 42.114155434   13.10 12.48 11.09   ~ 3492 3
2 4C 21.35 QSO 12 24 54.4583467193 +21 22 46.385219365   17.56 17.50 18.2   ~ 547 2
3 ICRF J123014.0+251807 BLL 12 30 14.0890365128 +25 18 07.136757021   15.6 14.5 14.78   ~ 110 1
4 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6084 3
5 7C 122915.40+290414.00 BLL 12 31 43.5723405743 +28 47 49.770840439   17.90 17.38     ~ 68 2
6 xFGL J1241.6+3438 gam 12 41.6 +34 39           ~ 1 0
7 xFGL J1245.8+2048 gam 12 45.8 +20 48           ~ 1 0
8 xFGL J1250.9+3117 gam 12 50.9 +31 17           ~ 1 0
9 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 995 0
10 NAME Coma A Sy2 12 54 12.052 +27 37 34.15   15.94       ~ 340 1
11 7C 1252+2227 BLL 12 54 33.2738249029 +22 11 03.647704785   18.0   17.7   ~ 25 1
12 NGC 4839 rG 12 57 24.353 +27 29 51.80 13.56 13.02 12.06     ~ 416 3
13 AB 66 QSO 12 57 57.2325547238 +32 29 29.324961568   19.40 19.17 17.69   ~ 83 1
14 3FGL J1258.4+2123 Bz? 12 58 21 +21 25.3           ~ 10 0
15 NGC 4869 rG 12 59 23.331 +27 54 41.81 15.03 14.9 13.52 13.292 12.536 ~ 258 0
16 NGC 4874 LIN 12 59 35.709 +27 57 33.80 13.01 13.7 11.40 12.122 11.386 ~ 701 3
17 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4132 2
18 NAME X Comae Galaxy Sy1 13 00 22.1585922148 +28 24 02.638271764   17.23 16.65     ~ 80 0
19 5C 12.170 QSO 13 01 29.1552099207 +33 37 00.360446317   20.54 20.16     ~ 34 1
20 2FGL J1303.1+2435 BLL 13 03 03.2178492820 +24 33 55.736992868   20.09 19.54 18.2   ~ 47 0
21 7C 1308+3236 BLL 13 10 28.66387 +32 20 43.7831   15.61 15.24 17.91   ~ 740 1
22 3FGL J1310.6+2446 BLL 13 10 36 +24 46.9           ~ 6 0
23 7C 1312+2404 BLL 13 14 43.8061207007 +23 48 26.784058893 17.15 16.83 16.57 15.4   ~ 55 1
24 [VV2006] J132111.2+221613 QSO 13 21 11.2021889975 +22 16 12.112556136   19.59 19.23 19.37   ~ 71 1
25 87GB 132042.1+295714 BLL 13 23 02.75 +29 41 32.5   20.7       ~ 48 1
26 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 3929 3
27 3FGL J1326.1+2931 BLL 13 26 14.9918642389 +29 33 30.968505086   18.5 18.34 18.2   ~ 28 0
28 xFGL J1330.8+2933 gam 13 30.8 +29 33           ~ 1 0
29 ICRF J133307.4+272518 QSO 13 33 07.49071645 +27 25 18.3831331       19.58   ~ 42 1

    Equat.    Gal    SGal    Ecl

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2020.01.27-09:57:30

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