2012A&A...539A.118A

Query : 2012A&A...539A.118A

2012A&A...539A.118A - Astronomy and Astrophysics, volume 539A, 118-118 (2012/3-1)

Discovery of VHE γ-ray emission from the BL Lacertae object B3 2247+381 with the MAGIC telescopes.

ALEKSIC J., ALVAREZ E.A., ANTONELLI L.A., ANTORANZ P., ASENSIO M., BACKES M., BARRIO J.A., BASTIERI D., BECERRA GONZALEZ J., BEDNAREK W., BERDYUGIN A., BERGER K., BERNARDINI E., BILAND A., BLANCH O., BOCK R.K., BOLLER A., BONNOLI G., BORLA TRIDON D., BRAUN I., BRETZ T., CANELLAS A., CARMONA E., CAROSI A., COLIN P., COLOMBO E., CONTRERAS J.L., CORTINA J., COSSIO L., COVINO S., DAZZI F., DE ANGELIS A., DE CANEVA G., DE CEA DEL POZO E., DE LOTTO B., DELGADO MENDEZ C., DIAGO ORTEGA A., DOERT M., DOMINGUEZ A., DOMINIS PRESTER D., DORNER D., DORO M., ELSAESSER D., FERENC D., FONSECA M.V., FONT L., FRUCK C., GARCIA LOPEZ R.J., GARCZARCZYK M., GARRIDO D., GIAVITTO G., GODINOVIC N., HADASCH D., HAFNER D., HERRERO A., HILDEBRAND D., HOEHNE-MOENCH D., HOSE J., HRUPEC D., HUBER B., JOGLER T., KELLERMANN H., KLEPSER S., KRAEHENBUEHL T., KRAUSE J., LA BARBERA A., LELAS D., LEONARDO E., LINDFORS E., LOMBARDI S., LOPEZ M., LOPEZ-ORAMAS A., LORENZ E., MAKARIEV M., MANEVA G., MANKUZHIYIL N., MANNHEIM K., MARASCHI L., MARIOTTI M., MARTINEZ M., MAZIN D., MEUCCI M., MIRANDA J.M., MIRZOYAN R., MIYAMOTO H., MOLDON J., MORALEJO A., MUNAR-ADROVER P., NIETO D., NILSSON K., ORITO R., OYA I., PANEQUE D., PAOLETTI R., PARDO S., PAREDES J.M., PARTINI S., PASANEN M., PAUSS F., PEREZ-TORRES M.A., PERSIC M., PERUZZO L., PILIA M., POCHON J., PRADA F., PRADA MORONI P.G., PRANDINI E., PULJAK I., REICHARDT I., REINTHAL R., RHODE W., RIBO M., RICO J., RUEGAMER S., SAGGION A., SAITO K., SAITO T.Y., SALVATI M., SATALECKA K., SCALZOTTO V., SCAPIN V., SCHULTZ C., SCHWEIZER T., SHAYDUK M., SHORE S.N., SILLANPAEAE A., SITAREK J., SNIDARIC I., SOBCZYNSKA D., SPANIER F., SPIRO S., STAMATESCU V., STAMERRA A., STEINKE B., STORZ J., STRAH N., SURIC T., TAKALO L., TAKAMI H., TAVECCHIO F., TEMNIKOV P., TERZIC T., TESCARO D., TESHIMA M., TIBOLLA O., TORRES D.F., TREVES A., UELLENBECK M., VANKOV H., VOGLER P., WAGNER R.M., WEITZEL Q., ZABALZA V., ZANDANEL F., ZANIN R., KADENIUS V., WEIDINGER M. and BUSON S.

Abstract (from CDS):

We study the non-thermal jet emission of the BL Lac object B3 2247+381 during a high optical state. The MAGIC telescopes observed the source during 13 nights between September 30th and October 30th 2010, collecting a total of 14.2h of good quality very high energy (VHE) γ-ray data. Simultaneous multiwavelength data was obtained with X-ray observations by the Swift satellite and optical R-band observations at the KVA-telescope. We also use high energy γ-ray (HE, 0.1-100GeV) data from the Fermi satellite. The BL Lac object B3 2247+381 (z=0.119) was detected, for the first time, at VHE γ-rays at a statistical significance of 5.6σ. A soft VHE spectrum with a photon index of -3.2±0.6 was determined. No significant short term flux variations were found. We model the spectral energy distribution using a one-zone SSC-model, which can successfully describe our data.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - BL Lacertae objects: individual: B3 2247+381

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 UGC 1841 Sy1 02 23 11.41124925 +42 59 31.3853324   15.71 14.81     ~ 561 2
2 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1299 1
3 6C 101157+494057 BLL 10 15 04.1396533776 +49 26 00.706055496   16.56 16.15 14.58   ~ 370 3
4 6C 113337+702604 BLL 11 36 26.4090783600 +70 09 27.309071232   15.16 14.49 10.51   ~ 368 1
5 6C 121520+302351 BLL 12 17 52.0819904040 +30 07 00.634936872   16.07 15.62 13.47   ~ 478 1
6 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3042 2
7 QSO B1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 568 1
8 QSO B2155-304 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1732 1
9 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2258 1
10 LEDA 2126234 BLL 22 50 05.7481607616 +38 24 37.193100984     16.00 14.8   ~ 132 1

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