2013ApJ...776...69A

Query : 2013ApJ...776...69A

2013ApJ...776...69A - Astrophys. J., 776, 69 (2013/October-3)

Discovery of a new TeV gamma-ray source: VER J0521+211.

ARCHAMBAULT S., ARLEN T., AUNE T., BEHERA B., BEILICKE M., BENBOW W., BIRD R., BOUVIER A., BUCKLEY J.H., BUGAEV V., BYRUM K., CESARINI A., CIUPIK L., CONNOLLY M.P., CUI W., ERRANDO M., FALCONE A., FEDERICI S., FENG Q., FINLEY J.P., FORTSON L., FURNISS A., GALANTE N., GALL D., GILLANDERS G.H., GRIFFIN S., GRUBE J., GYUK G., HANNA D., HOLDER J., HUGHES G., HUMENSKY T.B., KAARET P., KERTZMAN M., KHASSEN Y., KIEDA D., KRAWCZYNSKI H., KRENNRICH F., KUMAR S., LANG M.J., MADHAVAN A.S., MAIER G., MAJUMDAR P., McARTHUR S., McCANN A., MILLIS J., MORIARTY P., MUKHERJEE R., O'FAOLAIN DE BHROITHE A., ONG R.A., OTTE A.N., PARK N., PERKINS J.S., POHL M., POPKOW A., PROKOPH H., QUINN J., RAGAN K., REYES L.C., REYNOLDS P.T., RICHARDS G.T., ROACHE E., SAXON D.B., SEMBROSKI G.H., SMITH A.W., STASZAK D., TELEZHINSKY I., THEILING M., VARLOTTA A., VASSILIEV V.V., VINCENT S., WAKELY S.P., WEEKES T.C., WEINSTEIN A., WELSING R., WILLIAMS D.A., ZITZER B. (The VERITAS Collaboration), BOTTCHER M., FEGAN S.J., FORTIN P., HALPERN J.P., KOVALEV Y.Y., LISTER M.L., LIU J., PUSHKAREV A.B. and SMITH P.S.

Abstract (from CDS):

We report the detection of a new TeV gamma-ray source, VER J0521+211, based on observations made with the VERITAS imaging atmospheric Cherenkov Telescope Array. These observations were motivated by the discovery of a cluster of >30 GeV photons in the first year of Fermi Large Area Telescope observations. VER J0521+211 is relatively bright at TeV energies, with a mean photon flux of (1.93±0.13stat± 0.78sys)x10–11/cm2/s above 0.2 TeV during the period of the VERITAS observations. The source is strongly variable on a daily timescale across all wavebands, from optical to TeV, with a peak flux corresponding to ∼0.3 times the steady Crab Nebula flux at TeV energies. Follow-up observations in the optical and X-ray bands classify the newly discovered TeV source as a BL Lac-type blazar with uncertain redshift, although recent measurements suggest z = 0.108. VER J0521+211 exhibits all the defining properties of blazars in radio, optical, X-ray, and gamma-ray wavelengths.

Abstract Copyright: ∼

Journal keyword(s): BL Lacertae objects: individual: VER J0521+211 - gamma rays: galaxies

Simbad objects: 31

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Number of rows : 31
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 RX J0035.8+5950 BLL 00 35 52.6448284115 +59 50 04.513482441     19.5 17.2   ~ 195 1
2 1RXS J013632.9+390556 BLL 01 36 32.5983798936 +39 05 59.199517428       15.5   ~ 146 2
3 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
4 RX J0319.8+1845 BLL 03 19 51.8082475320 +18 45 34.562475432           ~ 223 1
5 PKS J0449-4350 BLL 04 49 24.6981911928 -43 50 08.960970948 14.95 17.52 15.24 16.27   ~ 190 1
6 RX J0507.9+6737 BLL 05 07 56.1631660632 +67 37 24.225299292       17.2   ~ 196 1
7 RX J0521.7+2112 BLL 05 21 45.9657388992 +21 12 51.452786736           ~ 162 1
8 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
9 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
10 IC 443 SNR 06 17 00.0000000 +22 34 11.998901           ~ 1314 1
11 HD 259440 HXB 06 32 59.2566076656 +05 48 01.160755848 9.17 9.63 9.15     B0pe 256 0
12 RX J0648.7+1516 BLL 06 48 47.6488006968 +15 16 24.797585352       16.2   ~ 99 1
13 NAME Vela X Psr 08 33 08.880 -45 11 24.36           ~ 302 1
14 NAME Vela Jr SN SNR 08 52.0 -46 20           ~ 507 2
15 RX J1015.0+4926 BLL 10 15 04.1396533776 +49 26 00.706055496   16.56 16.15 14.58   ~ 400 3
16 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
17 PG 1218+304 BLL 12 21 21.9426947832 +30 10 37.158534012   16.50 15.85 15.7   ~ 497 1
18 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 924 1
19 7C 122223.5+213929 Bla 12 24 54.4583146056 +21 22 46.385507388   17.56 17.50 18.2   ~ 770 2
20 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
21 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 852 0
22 PG 1424+240 BLL 14 27 00.3917926224 +23 48 00.037510776 14.52 14.34 14.95 14.5   ~ 420 1
23 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
24 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
25 V* V479 Sct HXB 18 26 15.0561548880 -14 50 54.247274304 12.02 12.23 11.27 11.04   ON6V((f))z 613 2
26 1RXS J194356.1+211731 Bla 19 43 56.24400 +21 18 23.3784           ~ 99 1
27 QSO B1959+650 BLL 19 59 59.8520303688 +65 08 54.652536492     12.8 11.21   ~ 699 2
28 MAGIC J2001+435 BLL 20 01 12.8737326408 +43 52 52.840241616   15.6   15   ~ 108 1
29 PKS J2009-4849 BLL 20 09 25.3903899240 -48 49 53.725051056   15.75 12.81 11.41   ~ 604 1
30 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1
31 QSO B2344+514 BLL 23 47 04.8372110928 +51 42 17.877513168     15.50 10.7   ~ 500 1

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