2015MNRAS.452.3159A

Query : 2015MNRAS.452.3159A

2015MNRAS.452.3159A - Mon. Not. R. Astron. Soc., 452, 3159-3166 (2015/September-3)

The detection of Fermi AGN above 100 GeV using clustering analysis.

ARMSTRONG T., BROWN A.M., CHADWICK P.M. and NOLAN S.J.

Abstract (from CDS):

The density-based clustering algorithm dbscan has been applied to the Fermi Large Area Telescope (LAT) data set of Eγ ≥ 100 GeV events with {verbar}b{verbar} > 10°, in order to search for new very high energy (VHE) γ-ray sources. The clustering analysis returned 49 clusters, of which 21 correspond to already known VHE-emitting active galactic nuclei (AGN) within the TeVCat catalogue and a further 11 were found to be significant in a full Fermi analysis. Of these, two are previously detected Fermi VHE AGN, and nine represent new VHE sources consisting of six BL Lac objects, one blazar of unknown type and two unassociated sources. Comparing these, along with the VHE AGN RBS 0679 and RBS 0970 previously detected with Fermi-LAT, to the current populations of AGN detected with ground-based instruments and Fermi suggests that the VHE-emitting AGN discovered in this study are very similar to the TeVCat AGN and therefore further observations with ground-based imaging atmospheric Cherenkov telescopes are recommended.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): radiation mechanisms: non-thermal - methods: statistical - galaxies: active - BL Lacertae objects: general - gamma-rays: galaxies

Nomenclature: Table 2: [ABC2015] JHHMM.mm+DDMM N=10, [ABC2015] JHHMM.m+DDMM N=3.

Simbad objects: 56

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Number of rows : 56
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 PMN J0209-5229 BLL 02 09 21.6157612080 -52 29 22.788843756 17.30 17.00 16.69 14.5   ~ 62 1
2 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
3 [ABC2015] J0255.43+3334 gam 02 55 26 +33 34.0           ~ 1 0
4 PKS J0303-2407 BLL 03 03 26.5025589984 -24 07 11.426291220   16.55 16.18     ~ 249 1
5 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
6 RX J0319.8+1845 BLL 03 19 51.8082475320 +18 45 34.562475432           ~ 223 1
7 PKS J0449-4350 BLL 04 49 24.6981911928 -43 50 08.960970948 14.95 17.52 15.24 16.27   ~ 190 1
8 RX J0507.9+6737 BLL 05 07 56.1631660632 +67 37 24.225299292       17.2   ~ 196 1
9 PMN J0544-5532 BLL 05 43 57.2123766984 -55 32 07.327939200 17.34 17.18 17.09 16.5   ~ 84 1
10 RX J0650.7+2502 BLL 06 50 46.4900658984 +25 02 59.625654828 16.17 15.97 15.79 16.3   ~ 175 2
11 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1388 1
12 PMN J0730-6602 BLL 07 30 49.5588000264 -66 02 18.881436948   17.98   16.44   ~ 46 1
13 [ABC2015] J0808.43+1645 gam 08 08 26 +16 45.0           ~ 1 0
14 RX J0809.8+5218 BLL 08 09 49.1868285744 +52 18 58.249938744   16.11 15.59 14.6   ~ 302 1
15 PMN J0912-2103 BLL 09 13 00.2229216720 -21 03 21.039728508   17.82   16.42   ~ 82 1
16 RX J1015.0+4926 BLL 10 15 04.1396533776 +49 26 00.706055496   16.56 16.15 14.58   ~ 400 3
17 RX J1031.3+5053 BLL 10 31 18.5251007784 +50 53 35.817278064   17.25 16.98 16.3   ~ 210 2
18 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
19 RX J1117.1+2014 BLL 11 17 06.2512673640 +20 14 07.380923028           ~ 159 1
20 RX J1120.7+4212 BLL 11 20 48.0624161160 +42 12 12.465387612   17.55 17.11 16.9   ~ 130 2
21 Z 334-43 BLL 11 36 26.4090783600 +70 09 27.309071232   15.16 14.49 10.51   ~ 394 1
22 RX J1217.8+3007 BLL 12 17 52.0819904040 +30 07 00.634936872   16.07 15.62 13.47   G7 516 1
23 PG 1218+304 BLL 12 21 21.9426947832 +30 10 37.158534012   16.50 15.85 15.7   ~ 497 1
24 7C 122223.5+213929 Bla 12 24 54.4583146056 +21 22 46.385507388   17.56 17.50 18.2   ~ 770 2
25 7C 130709.80+432102.00 BLL 13 09 25.5263659608 +43 05 05.576817300   17.65 17.13     ~ 90 1
26 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
27 [ABC2015] J1359.3-4019 gam 13 59.3 -40 19           ~ 1 0
28 PG 1424+240 BLL 14 27 00.3917926224 +23 48 00.037510776 14.52 14.34 14.95 14.5   ~ 420 1
29 [ABC2015] J1526.16-0515 gam 15 26 10 -05 15.0           ~ 1 0
30 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
31 [ABC2015] J1626.7-0617 gam 16 26.7 -06 17           ~ 1 0
32 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
33 [ABC2015] J1655.52+0052 gam 16 55 31 +00 52.0           ~ 1 0
34 2FGL J1659.2-0142 Bz? 16 59 03.7 -01 40 39           ~ 17 0
35 1RXS J171405.2-202747 BLL 17 14 05.44464 -20 27 52.9362           ~ 34 0
36 2FGL J1721.5-0718c gam 17 21 38.63 -07 17 13.2           ~ 7 0
37 SNR G006.4-00.1 SNR 18 00 31.2011719 -23 25 48.001099           ~ 782 1
38 W 30 SNR 18 05 31.2011719 -21 25 48.001099           ~ 188 1
39 RX J1838.7+4802 BLL 18 38 49.1550459624 +48 02 34.274232744     17.60 15.671   ~ 89 0
40 ARGO J1839-0627 Psr 18 40 55.0 -05 33 00           ~ 66 1
41 SNR G034.6-00.5 SNR 18 56 10.650 +01 13 21.30           ~ 1034 2
42 [ABC2015] J1902.14+4557 gam 19 02 08 +45 57.0           ~ 1 0
43 [ABC2015] J1903.33+3649 gam 19 03 20 +36 49.0           ~ 1 0
44 [ABC2015] J1907.07-2930 gam 19 07 04 -29 30.0           ~ 1 0
45 [ABC2015] J1938.09-0350 gam 19 38 05 -03 50.0           ~ 1 0
46 QSO B1959+650 BLL 19 59 59.8520303688 +65 08 54.652536492     12.8 11.21   ~ 699 2
47 [ABC2015] J2001.5+0330 gam 20 01.5 +03 30           ~ 1 0
48 PKS J2009-4849 BLL 20 09 25.3903899240 -48 49 53.725051056   15.75 12.81 11.41   ~ 604 1
49 PSR J2124-3358 Psr 21 24 43.834930 -33 58 45.49195           ~ 337 1
50 MCG-06-47-006 GiG 21 32 25.0662123264 -34 22 21.981411084   14.81   13.26   ~ 18 1
51 [ABC2015] J2132.43-3416 gam 21 32 26 -34 16.0           ~ 1 0
52 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1
53 1RXS J220942.1-045120 Bla 22 09 41.6987755387 -04 51 10.294868531           ~ 27 1
54 [ABC2015] J2212.19+8221 gam 22 12 11 +82 21.0           ~ 1 0
55 1RXS J232243.7+343616 BLL 23 22 44.0142017808 +34 36 13.873220208       13.2   ~ 87 1
56 NVSS J235612+403648 Bla 23 56 12.7423370256 +40 36 46.976785524           ~ 40 1

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