2010ApJ...717L..71A

Query : 2010ApJ...717L..71A

2010ApJ...717L..71A - Astrophys. J., 717, L71-L78 (2010/July-1)

GeV gamma-ray flux upper limits from clusters of galaxies.

ACKERMANN M., AJELLO M., ALLAFORT A., BALDINI L., BALLET J., BARBIELLINI G., BASTIERI D., BECHTOL K., BELLAZZINI R., BLANDFORD R.D., BLASI P., BLOOM E.D., BONAMENTE E., BORGLAND A.W., BOUVIER A., BRANDT T.J., BREGEON J., BRIGIDA M., BRUEL P., BUEHLER R., BUSON S., CALIANDRO G.A., CAMERON R.A., CARAVEO P.A., CARRIGAN S., CASANDJIAN J.M., CAVAZZUTI E., CECCHI C., CELIK O., CHARLES E., CHEKHTMAN A., CHEUNG C.C., CHIANG J., CIPRINI S., CLAUS R., COHEN-TANUGI J., COLAFRANCESCO S., COMINSKY L.R., CONRAD J., DERMER C.D., DE PALMA F., DO COUTO E SILVA E., DRELL P.S., DUBOIS R., DUMORA D., EDMONDS Y., FARNIER C., FAVUZZI C., FRAILIS M., FUKAZAWA Y., FUNK S., FUSCO P., GARGANO F., GASPARRINI D., GEHRELS N., GERMANI S., GIGLIETTO N., GIORDANO F., GIROLETTI M., GLANZMAN T., GODFREY G., GRENIER I.A., GRONDIN M.-H., GUIRIEC S., HADASCH D., HARDING A.K., HAYASHIDA M., HAYS E., HORAN D., HUGHES R.E., JELTEMA T.E., JOHANNESSON G., JOHNSON A.S., JOHNSON T.J., JOHNSON W.N., KAMAE T., KATAGIRI H., KATAOKA J., KERR M., KNODLSEDER J., KUSS M., LANDE J., LATRONICO L., LEE S.-H., LEMOINE-GOUMARD M., LONGO F., LOPARCO F., LOTT B., LOVELLETTE M.N., LUBRANO P., MADEJSKI G.M., MAKEEV A., MAZZIOTTA M.N., MICHELSON P.F., MITTHUMSIRI W., MIZUNO T., MOISEEV A.A., MONTE C., MONZANI M.E., MORSELLI A., MOSKALENKO I.V., MURGIA S., NAUMANN-GODO M., NOLAN P.L., NORRIS J.P., NUSS E., OHSUGI T., OMODEI N., ORLANDO E., ORMES J.F., OZAKI M., PANEQUE D., PANETTA J.H., PEPE M., PESCE-ROLLINS M., PETROSIAN V., PFROMMER C., PIRON F., PORTER T.A., PROFUMO S., RAINO S., RANDO R., RAZZANO M., REIMER A., REIMER O., REPOSEUR T., RIPKEN J., RITZ S., RODRIGUEZ A.Y., ROMANI R.W., ROTH M., SADROZINSKI H.F.-W., SANDER A., SAZ PARKINSON P.M., SCARGLE J.D., SGRO C., SISKIND E.J., SMITH P.D., SPANDRE G., SPINELLI P., STARCK J.-L., STAWARZ L., STRICKMAN M.S., STRONG A.W., SUSON D.J., TAJIMA H., TAKAHASHI H., TAKAHASHI T., TANAKA T., THAYER J.B., THAYER J.G., TIBALDO L., TIBOLLA O., TORRES D.F., TOSTI G., TRAMACERE A., UCHIYAMA Y., USHER T.L., VANDENBROUCKE J., VASILEIOU V., VILCHEZ N., VITALE V., WAITE A.P., WANG P., WINER B.L., WOOD K.S., YANG Z., YLINEN T. and ZIEGLER M.

Abstract (from CDS):

The detection of diffuse radio emission associated with clusters of galaxies indicates populations of relativistic leptons infusing the intracluster medium (ICM). Those electrons and positrons are either injected into and accelerated directly in the ICM, or produced as secondary pairs by cosmic-ray ions scattering on ambient protons. Radiation mechanisms involving the energetic leptons together with the decay of neutral pions produced by hadronic interactions have the potential to produce abundant GeV photons. Here, we report on the search for GeV emission from clusters of galaxies using data collected by the Large Area Telescope on the Fermi Gamma-ray Space Telescope from 2008 August to 2010 February. Thirty-three galaxy clusters have been selected according to their proximity and high mass, X-ray flux and temperature, and indications of non-thermal activity for this study. We report upper limits on the photon flux in the range 0.2-100 GeV toward a sample of observed clusters (typical values (1-5) x10–9 photon/cm2/s) considering both point-like and spatially resolved models for the high-energy emission and discuss how these results constrain the characteristics of energetic leptons and hadrons, and magnetic fields in the ICM. The volume-averaged relativistic-hadron-to-thermal energy density ratio is found to be <5%-10% in several clusters.

Abstract Copyright: ∼

Journal keyword(s): cosmic rays - galaxies: clusters: general - gamma rays: galaxies: clusters - radiation mechanisms: non-thermal

Simbad objects: 40

goto Full paper

goto View the references in ADS

Number of rows : 40
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 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
2 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
3 2A 0251+413 ClG 02 54 26.6 +41 33 25           ~ 328 1
4 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
5 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
6 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
7 ACO 3266 ClG 04 31 26.4 -61 25 17           ~ 447 0
8 3C 129 rG 04 49 09.064 +45 00 39.40   19       ~ 273 2
9 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 334 0
10 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
11 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 511 0
12 B3 0714+378 Rad 07 17 36.6 +37 45 01           ~ 170 2
13 NAME HYA SUPERCL SCG 08 57.9 +03 10           ~ 204 0
14 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
15 ACO S 636 ClG 10 29 41.0957 -35 19 32.908           ~ 248 0
16 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
17 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
18 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
19 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
20 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
21 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
22 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
23 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
24 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
25 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 531 0
26 ClG J1347-1145 ClG 13 47 30.5 -11 45 07           ~ 577 0
27 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
28 ACO 1914 ClG 14 25 57.4 +37 49 54           ~ 338 0
29 NGC 5813 LIN 15 01 11.2302420864 +01 42 07.141569696 12.00 11.45 10.46 10.06   ~ 673 2
30 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
31 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
32 ACO 2142 ClG 15 58 26.5 +27 13 52           ~ 825 0
33 ACO 3627 ClG 16 14 22.5 -60 52 07           ~ 340 2
34 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
35 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
36 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
37 BAX 249.5848-64.5165 ClG 16 38 13.2 -64 21 21           ~ 123 0
38 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
39 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
40 ACO 3888 ClG 22 34 26.3 -37 44 29           ~ 151 1

To bookmark this query, right click on this link: simbad:objects in 2010ApJ...717L..71A and select 'bookmark this link' or equivalent in the popup menu