2014A&A...563A..90A

Query : 2014A&A...563A..90A

2014A&A...563A..90A - Astronomy and Astrophysics, volume 563A90-90 (2014/3-1)

Discovery of very high energy gamma-ray emission from the blazar 1ES 1727+502 with the MAGIC Telescopes.

ALEKSIC J., ANTONELLI L.A., ANTORANZ P., ASENSIO M., BACKES M., BARRES DE ALMEIDA U., BARRIO J.A., BECERRA GONZALEZ J., BEDNAREK W., BERGER K., BERNARDINI E., BILAND A., BLANCH O., BOCK R.K., BOLLER A., BONNEFOY S., BONNOLI G., BORLA TRIDON D., BORRACCI F., BRETZ T., CARMONA E., CAROSI A., CARRETO FIDALGO D., COLIN P., COLOMBO E., CONTRERAS J.L., CORTINA J., COSSIO L., COVINO S., DA VELA P., DAZZI F., DE ANGELIS A., DE CANEVA G., DE LOTTO B., DELGADO MENDEZ C., DOERT M., DOMINGUEZ A., DOMINIS PRESTER D., DORNER D., DORO M., EISENACHER D., ELSAESSER D., FARINA E., FERENC D., FONSECA M.V., FONT L., FRUCK C., GARCIA LOPEZ R.J., GARCZARCZYK M., GARRIDO TERRATS D., GAUG M., GIAVITTO G., GODINOVIC N., GONZALEZ MUNOZ A., GOZZINI S.R., HADAMEK A., HADASCH D., HAEFNER D., HERRERO A., HOSE J., HRUPEC D., IDEC W., JANKOWSKI F., KADENIUS V., KLEPSER S., KNOETIG M.L., KRAEHENBUEHL T., KRAUSE J., KUSHIDA J., LA BARBERA A., LELAS D., LEWANDOWSKA N., LINDFORS E., LOMBARDI S., LOPEZ M., LOPEZ-COTO R., LOPEZ-ORAMAS A., LORENZ E., LOZANO I., MAKARIEV M., MALLOT K., MANEVA G., MANKUZHIYIL N., MANNHEIM K., MARASCHI L., MARCOTE B., MARIOTTI M., MARTINEZ M., MASBOU J., MAZIN D., MEUCCI M., MIRANDA J.M., MIRZOYAN R., MOLDON J., MORALEJO A., MUNAR-ADROVER P., NAKAJIMA D., NIEDZWIECKI A., NILSSON K., NOWAK N., ORITO R., PAIANO S., PALATIELLO M., PANEQUE D., PAOLETTI R., PAREDES J.M., PARTINI S., PERSIC M., 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., SHORE S.N., SILLANPAEAE A., SITAREK J., SNIDARIC I., SOBCZYNSKA D., SPANIER F., SPIRO S., STAMATESCU V., STAMERRA A., STEINKE B., STORZ J., SUN S., SURIC T., TAKALO L., TAKAMI H., TAVECCHIO F., TEMNIKOV P., TERZIC T., TESCARO D., TESHIMA M., TIBOLLA O., TORRES D.F., TOYAMA T., TREVES A., UELLENBECK M., VOGLER P., WAGNER R.M., WEITZEL Q., ZANDANEL F., ZANIN R. and BUSON S.

Abstract (from CDS):

Motivated by the prediction of a high TeV luminosity we investigated whether the blazar 1ES1727+502 (z=0.055) is emitting very high energy (VHE, E>100GeV) γ rays. We observed the BL Lac object 1ES1727+502 in stereoscopic mode with the two MAGIC telescopes for 14 nights between May 6th and June 10th 2011, for a total effective observing time of 12.6h. To study the multiwavelength spectral energy distribution (SED), we used simultaneous optical R-band data from the KVA telescope, archival UV/optical and X-ray observations from instruments UVOT and XRT on board of the Swift satellite, and high energy (HE, 0.1GeV-100GeV) γ-ray data from the Fermi-LAT instrument. We detected, for the first time, VHE γ-ray emission from 1ES1727+502 at a statistical significance of 5.5σ. The integral flux above 150GeV is estimated to be (2.1±0.4)% of the Crab nebula flux and the de-absorbed VHE spectrum has a photon index of (2.7±0.5). No significant short-term variability was found in any of the wavebands presented here. We model the SED using a one-zone synchrotron self-Compton model obtaining parameters typical for this class of sources.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - BL Lacertae objects: individual: 1ES1727+502

Simbad objects: 11

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Number of rows : 11
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 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
3 RX J1015.0+4926 BLL 10 15 04.1396533776 +49 26 00.706055496   16.56 16.15 14.58   ~ 400 3
4 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
5 Z 334-43 BLL 11 36 26.4090783600 +70 09 27.309071232   15.16 14.49 10.51   ~ 394 1
6 RX J1217.8+3007 BLL 12 17 52.0819904040 +30 07 00.634936872   16.07 15.62 13.47   G7 516 1
7 PG 1218+304 BLL 12 21 21.9426947832 +30 10 37.158534012   16.50 15.85 15.7   ~ 497 1
8 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
9 ZW I 187 BLL 17 28 18.6242294352 +50 13 10.469553996   16.55 15.97 12.95   ~ 396 1
10 1RXS J174357.3+193505 BLL 17 43 57.8330083440 +19 35 09.018846384     16.80 12.7   ~ 190 1
11 RX J2250.0+3824 BLL 22 50 05.7481607616 +38 24 37.193100984       14.8   ~ 147 2

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