2010ApJ...723L.207A

Query : 2010ApJ...723L.207A

2010ApJ...723L.207A - Astrophys. J., 723, L207-L212 (2010/November-2)

Detection of very high energy γ-ray emission from the Perseus cluster head-tail galaxy IC 310 by the MAGIC telescopes.

ALEKSIC J., ANTONELLI L.A., ANTORANZ P., 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., BORDAS P., BORLA TRIDON D., BOSCH-RAMON V., BOSE D., BRAUN I., BRETZ T., CAMARA M., 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 CEA DEL POZO E., DE LOTTO B., DE MARIA M., DE SABATA F., DELGADO MENDEZ C., DIAGO ORTEGA A., DOERT M., DOMINGUEZ A., DOMINIS PRESTER D., DORNER D., DORO M., ELSAESSER D., ERRANDO M., FERENC D., FONSECA M.V., FONT L., GARCIA LOPEZ R.J., GARCZARCZYK M., GIAVITTO G., GODINOVIC N., HADASCH D., HERRERO A., HILDEBRAND D., HOHNE-MONCH D., HOSE J., HRUPEC D., JOGLER T., KLEPSER S., KRAHENBUHL T., KRANICH D., KRAUSE J., LA BARBERA A., LEONARDO E., LINDFORS E., LOMBARDI S., LONGO F., LOPEZ M., LORENZ E., MAJUMDAR P., 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., NIETO D., NILSSON K., ORITO R., OYA I., PAOLETTI R., PAREDES J.M., PARTINI S., PASANEN M., PAUSS F., PEGNA R.G., PEREZ-TORRES M.A., PERSIC M., PERUZZO L., POCHON J., PRADA F., PRADA MORONI P.G., PRANDINI E., PUCHADES N., PULJAK I., REICHARDT I., REINTHAL R., RHODE W., RIBO M., RICO J., RUGAMER S., SAGGION A., SAITO K., SAITO T.Y., SALVATI M., SANCHEZ-CONDE M., SATALECKA K., SCALZOTTO V., SCAPIN V., SCHULTZ C., SCHWEIZER T., SHAYDUK M., SHORE S.N., SIERPOWSKA-BARTOSIK A., SILLANPAA A., SITAREK J., SOBCZYNSKA D., SPANIER F., SPIRO S., STAMERRA A., STEINKE B., STORZ J., STRAH N., STRUEBIG J.C., SURIC T., TAKALO L., TAVECCHIO F., TEMNIKOV P., TERZIC T., TESCARO D., TESHIMA M., TORRES D.F., VANKOV H., WAGNER R.M., WEITZEL Q., ZABALZA V., ZANDANEL F., ZANIN R. (The MAGIC Collaboration), NERONOV A., PFROMMER C., PINZKE A. and SEMIKOZ D.V.

Abstract (from CDS):

We report on the detection with the MAGIC telescopes of very high energy (VHE) γ-rays from IC 310, a head-tail radio galaxy in the Perseus galaxy cluster, observed during the interval 2008 November to 2010 February. The Fermi satellite has also detected this galaxy. The source is detected by MAGIC at a high statistical significance of 7.6σ in 20.6 hr of stereo data. The observed spectral energy distribution is flat with a differential spectral index of -2.00±0.14. The mean flux above 300 GeV, between 2009 October and 2010 February, (3.1±0.5)x10–12/cm2/s, corresponds to (2.5±0.4)% of Crab Nebula units. Only an upper limit, of 1.9% of Crab Nebula units above 300 GeV, was obtained with the 2008 data. This, together with strong hints (>3σ) of flares in the middle of 2009 October and November, implies that the emission is variable. The MAGIC results favor a scenario with the VHE emission originating from the inner jet close to the central engine. More complicated models than a simple one-zone synchrotron self-Compton (SSC) scenario, e.g., multi-zone SSC, external Compton, or hadronic, may be required to explain the very flat spectrum and its extension over more than three orders of magnitude in energy.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: individual: IC 310 - gamma rays: galaxies

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 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
2 IC 310 AGN 03 16 42.9787569912 +41 19 29.615579544   14.3       ~ 311 2
3 NGC 1265 rG 03 18 15.674 +41 51 27.94   14.7       ~ 386 2
4 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
5 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
6 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
7 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
8 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
9 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 924 1
10 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
11 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3

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