2014A&A...564A...9H


Query : 2014A&A...564A...9H

2014A&A...564A...9H - Astronomy and Astrophysics, volume 564A9-9 (2014/4-1)

Flux upper limits for 47 AGN observed with H.E.S.S. in 2004-2011.

HESS COLLABORATION, ABRAMOWSKI A., AHARONIAN F., AIT BENKHALI F., AKHPERJANIAN A.G., ANGUENER E., ANTON G., BALENDERAN S., BALZER A., BARNACKA A., BECHERINI Y., BECKER TJUS J., BERNLOEHR K., BIRSIN E., BISSALDI E., BITEAU J., BOETTCHER M., BOISSON C., BOLMONT J., BORDAS P., BRUCKER J., BRUN F., BRUN P., BULIK T., CARRIGAN S., CASANOVA S., CERRUTI M., CHADWICK P.M., CHALME-CALVET R., CHAVES R.C.G., CHEESEBROUGH A., CHRETIEN M., COLAFRANCESCO S., COLOGNA G., CONRAD J., COUTURIER C., CUI Y., DALTON M., DANIEL M.K., DAVIDS I.D., DEGRANGE B., DEIL C., DEWILT P., DICKINSON H.J., DJANNATI-ATAIE A., DOMAINKO W., DRURY L.O'C., DUBUS G., DUTSON K., DYKS J., DYRDA M., EDWARDS T., EGBERTS K., EGER P., ESPIGAT P., FARNIER C., FEGAN S., FEINSTEIN F., FERNANDES M.V., FERNANDEZ D., FIASSON A., FONTAINE G., FOERSTER A., FUESSLING M., GAJDUS M., GALLANT Y.A., GARRIGOUX T., GIAVITTO G., GIEBELS B., GLICENSTEIN J.F., GRONDIN M.-H., GRUDZINSKA M., HAEFFNER S., HAHN J., HARRIS J., HEINZELMANN G., HENRI G., HERMANN G., HERVET O., HILLERT A., HINTON J.A., HOFMANN W., HOFVERBERG P., HOLLER M., HORNS D., JACHOLKOWSKA A., JAHN C., JAMROZY M., JANIAK M., JANKOWSKY F., JUNG I., KASTENDIECK M.A., KATARZYNSKI K., KATZ U., KAUFMANN S., KHELIFI B., KIEFFER M., KLEPSER S., KLOCHKOV D., KLUZNIAK W., KNEISKE T., KOLITZUS D., KOMIN NU., KOSACK K., KRAKAU S., KRAYZEL F., KRUEGER P.P., LAFFON H., LAMANNA G., LEFAUCHEUR J., LEMIERE A., LEMOINE-GOUMARD M., LENAIN J.-P., LENNARZ D., LOHSE T., LOPATIN A., LU C.-C., MARANDON V., MARCOWITH A., MARX R., MAURIN G., MAXTED N., MAYER M., McCOMB T.J.L., MEHAULT J., MEINTJES P.J., MENZLER U., MEYER M., MODERSKI R., MOHAMED M., MOULIN E., MURACH T., NAUMANN C.L., DE NAUROIS M., NIEMIEC J., NOLAN S.J., OAKES L., OHM S., DE ONA WILHELMI E., OPITZ B., OSTROWSKI M., OYA I., PANTER M., PARSONS R.D., PAZ ARRIBAS M., PEKEUR N.W., PELLETIER G., PEREZ J., PETRUCCI P.-O., PEYAUD B., PITA S., POON H., PUEHLHOFER G., PUNCH M., QUIRRENBACH A., RAAB S., RAUE M., REIMER A., REIMER O., RENAUD M., DE LOS REYES R., RIEGER F., ROB L., ROMOLI C., ROSIER-LEES S., ROWELL G., RUDAK B., RULTEN C.B., SAHAKIAN V., SANCHEZ D.A., SANTANGELO A., SCHLICKEISER R., SCHUESSLER F., SCHULZ A., SCHWANKE U., SCHWARZBURG S., SCHWEMMER S., SOL H., SPENGLER G., SPIES F., STAWARZ L., STEENKAMP R., STEGMANN C., STINZING F., STYCZ K., SUSHCH I., SZOSTEK A., TAVERNET J.-P., TAVERNIER T., TAYLOR A.M., TERRIER R., TLUCZYKONT M., TRICHARD C., VALERIUS K., VAN ELDIK C., VAN SOELEN B., VASILEIADIS G., VENTER C., VIANA A., VINCENT P., VOELK H.J., VOLPE F., VORSTER M., VUILLAUME T., WAGNER S.J., WAGNER P., WARD M., WEIDINGER M., WEITZEL Q., WHITE R., WIERZCHOLSKA A., WILLMANN P., WOERNLEIN A., WOUTERS D., ZABALZA V., ZACHARIAS M., ZAJCZYK A., ZDZIARSKI A.A., ZECH A. and ZECHLIN H.-S.

Abstract (from CDS):

About 40% of the observation time of the High Energy Stereoscopic System (H.E.S.S.) is dedicated to studying active galactic nuclei (AGN), with the aim of increasing the sample of known extragalactic very-high-energy (VHE, E>100GeV) sources and constraining the physical processes at play in potential emitters. H.E.S.S. observations of AGN, spanning a period from April 2004 to December 2011, are investigated to constrain their γ-ray fluxes. Only the 47 sources without significant excess detected at the position of the targets are presented. Upper limits on VHE fluxes of the targets were computed and a search for variability was performed on the nightly time scale. For 41 objects, the flux upper limits we derived are the most constraining reported to date. These constraints at VHE are compared with the flux level expected from extrapolations of Fermi-LAT measurements in the two-year catalog of AGN. The H.E.S.S. upper limits are at least a factor of two lower than the extrapolated Fermi-LAT fluxes for 11 objects. Taking into account the attenuation by the extragalactic background light reduces the tension for all but two of them, suggesting intrinsic curvature in the high-energy spectra of these two AGN. Compilation efforts led by current VHE instruments are of critical importance for target-selection strategies before the advent of the Cherenkov Telescope Array (CTA).

Abstract Copyright: ∼

Journal keyword(s): gamma rays: galaxies - galaxies: active

Simbad objects: 71

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Number of rows : 71
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 Mrk 1501 Bla 00 10 31.00590413 +10 58 29.5042981   15.96 15.40 12.22   ~ 763 1
2 2MASX J00135605-1854066 BLL 00 13 56.0426451480 -18 54 06.702770232   17.01   15.82   ~ 86 1
3 ATO J005.5386-18.8930 BLL 00 22 09.2686975344 -18 53 34.868121432 17.48 17.20 16.97     ~ 52 1
4 KUV 00311-1938 BLL 00 33 34.3800569400 -19 21 33.134193864       16.6   ~ 125 0
5 2FGL J0048.8-6347 gam 00 48 40.4 -63 47 29           ~ 18 0
6 QSO B0048-09 BLL 00 50 41.3172421464 -09 29 05.210474100 16.74 16.39 16.22 16.14   ~ 480 2
7 PMN J0051-6242 BLL 00 51 16.6464761530 -62 42 04.408098612 17.50 17.42 17.38   16.493 ~ 59 1
8 87GB 010628.1+175958 BLL 01 09 08.1769512984 +18 16 07.501949256     16.6 16.3   ~ 76 2
9 PMN J0152+0146 BLL 01 52 39.6109440384 +01 47 17.385104112       11.8   ~ 155 1
10 ICRF J021113.1+105134 BLL 02 11 13.1774921592 +10 51 34.798753116 13.96 13.63 13.40 15.42   ~ 161 1
11 GRO J0215+11 gam 02 16 00.0 +11 22 48           ~ 21 0
12 QSO B0227-369 Bla 02 29 28.44905708 -36 43 56.8223412     19.0 20.4   ~ 113 1
13 RX J0232.8+2017 BLL 02 32 48.6148874688 +20 17 17.486717388     18.00 13.96   ~ 387 1
14 1RXS J023733.9-360330 BLL 02 37 34.0464247200 -36 03 28.455320844 17.99 17.65 17.63 16.3   ~ 67 1
15 PKS J0303-2407 BLL 03 03 26.5025589984 -24 07 11.426291220   16.55 16.18     ~ 249 1
16 RX J0319.8+1845 BLL 03 19 51.8082475320 +18 45 34.562475432           ~ 223 1
17 1RXS J032540.8-164607 BLL 03 25 41.0966464392 -16 46 16.854374712           ~ 67 1
18 PMN J0326+0225 BLL 03 26 13.9481827296 +02 25 14.675937708   17.05 16.55 15.3   ~ 255 1
19 1RXS J033311.8-361942 BLL 03 33 12.2677895088 -36 19 46.662911112   19.94   17.99   ~ 59 0
20 ICRF J033415.4-372543 BLL 03 34 15.4249837080 -37 25 43.063647672 16.95 16.71 16.56     ~ 80 1
21 QSO B0347-121 BLL 03 49 23.1862105584 -11 59 27.366035532   18.74 18.2 17.46   ~ 245 1
22 PKS J0352-6831 BLL 03 52 57.4833917712 -68 31 17.019422256   13.7   12.3   ~ 81 1
23 PMN J0416+0105 BLL 04 16 52.4945693352 +01 05 23.899102620   16.86 16.38 16   ~ 302 1
24 QSO B0423+051 Bla 04 26 36.60410172 +05 18 19.8722293   19.5   18.8   ~ 83 1
25 MCG+01-12-009 Bla 04 33 11.0956735296 +05 21 15.619461552   15.72 15.05 10.08   ~ 2099 2
26 PKS J0449-4350 BLL 04 49 24.6981911928 -43 50 08.960970948 14.95 17.52 15.24 16.27   ~ 190 1
27 QSO B0503-043 BLL 05 05 51.23839621 -04 19 26.6137565   18.5 18 18.5   ~ 70 1
28 RX J0506.9-5435 BLL 05 06 57.8154316665 -54 35 03.822937816 17.60 17.25 17.14   15.822 ~ 62 0
29 1RXS J050938.3-040037 BLL 05 09 38.1791014104 -04 00 45.682814376   19.10   17.92   ~ 78 0
30 PSR J0514-4408 Psr 05 14 52.0806885 -44 08 38.403626           ~ 35 0
31 QSO B0514-459 Bla 05 15 45.2501347656 -45 56 43.198786536   18.18 17.5 17.31   ~ 132 1
32 ESO 252-18A Sy1 05 19 49.7229323856 -45 46 43.852662732   15.73 15.77 14.85   ~ 714 0
33 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
34 2FGL J0537.7-5716 BLL 05 37 48.9538387032 -57 18 30.099289860 17.85 17.77 17.34     ~ 48 0
35 ICRF J054045.8-541822 Bla 05 40 45.8480957784 -54 18 22.095295668   18.49   17.32   ~ 84 1
36 PMN J0544-5532 BLL 05 43 57.2123766984 -55 32 07.327939200 17.34 17.18 17.09 16.5   ~ 84 1
37 PKS J0550-3216 BLL 05 50 40.5705144672 -32 16 16.484718648   16.07 15.5     ~ 424 1
38 QSO B0715-259 BLL 07 18 04.8016416552 -26 08 11.601539664     18.00     ~ 17 0
39 6dFGS gJ101016.0-311909 BLL 10 10 15.9790879224 -31 19 08.411407176   17.61   16.09   ~ 97 1
40 PMN J1103-2329 BLL 11 03 37.6150845072 -23 29 31.203773520   17.00 16.55 16.61   ~ 405 1
41 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
42 2MASS J11540456-0010096 BLL 11 54 04.5561127560 -00 10 09.869511036   19.08 18.62     ~ 87 0
43 PG 1218+304 BLL 12 21 21.9426947832 +30 10 37.158534012   16.50 15.85 15.7   ~ 497 1
44 1FGL J1226.0+2954 gam 12 26 05 +29 53.8           ~ 24 0
45 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
46 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
47 RX J1315.0-4236 BLL 13 15 03.3912307368 -42 36 49.760844084   18.07   16.59   ~ 114 0
48 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
49 1RXS J133530.6-295031 BLL 13 35 29.7518919576 -29 50 38.921848188   18.13   19.25   ~ 70 0
50 PKS 1345+12 Sy2 13 47 33.36161873 +12 17 24.2398927   19.28 18.44 15.718   ~ 652 2
51 RX J1351.3+1114 BLL 13 51 20.8456353168 +11 14 52.980699588 17.97 17.82 17.87     ~ 72 1
52 RX J1442.8+1200 BLL 14 42 48.2771008152 +12 00 40.348597716   18.34 17.63 15.2   ~ 189 1
53 PKS J1443-3908 BLL 14 43 57.1974184800 -39 08 40.053885612       14.7   ~ 105 1
54 QSO J1512-0906 Bla 15 12 50.53293048 -09 05 59.8297908   16.74 16.54     ~ 1409 1
55 ESO 514-1 BLL 15 17 41.8134049824 -24 22 19.482207024   15.13 14.00 13.95   ~ 815 3
56 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
57 1RXS J194356.1+211731 Bla 19 43 56.24400 +21 18 23.3784           ~ 99 1
58 AT20G J195913-424607 Bla 19 59 13.2766751832 -42 46 07.517478900       19.79   ~ 69 1
59 QSO B2004-447 Bla 20 07 55.1842447944 -44 34 44.274118260   19.3 19.3 18   ~ 185 1
60 PKS J2009-4849 BLL 20 09 25.3903899240 -48 49 53.725051056   15.75 12.81 11.41   ~ 604 1
61 1RXS J213135.5-091525 BLL 21 31 35.4233915640 -09 15 23.693668272     18.00 17.5   ~ 73 1
62 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1
63 QSO B2209+184 BLL 22 11 53.8888927344 +18 41 49.861248288   16.09 15.44 11.96   ~ 187 2
64 ICRF J221914.0+180635 Bla 22 19 14.09247625 +18 06 35.5807267       19.91   ~ 92 1
65 1RXS J224341.9-123106 BLL 22 43 41.5565321184 -12 31 37.162329456       18.6   ~ 42 1
66 NVSS J225032+174915 Bla 22 50 32.7567295767 +17 49 14.907644163           ~ 35 1
67 NGC 7469 Sy1 23 03 15.6 +08 52 26 12.60 13.00 12.34     ~ 2253 3
68 QSO J2345-1555 BLL 23 45 12.4622049264 -15 55 07.836801888   19.21   18.48   ~ 202 1
69 1RXS J234538.0-144924 BLL 23 45 38.4249663576 -14 49 28.778832588     19.2 17   ~ 27 0
70 QSO B2345-167 Bla 23 48 02.60851466 -16 31 12.0222546   18.00 18.41 16.86   ~ 432 1
71 QSO B2356-309 BLL 23 59 07.9034996184 -30 37 40.671098544   18.414 16.44 16.795   ~ 318 2

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