Discovery of very high energy gamma radiation from IC 443 with the MAGIC telescope

被引：173

作者：

Albert, J.

Aliu, E.

Anderhub, H.

Antoranz, P.

Armada, A.

Baixeras, C.

Barrio, J. A.

Bartko, H. ^{[1
]}

Bastieri, D.

Becker, J. K.

Bednarek, W.

Berger, K.

Bigongiari, C.

Biland, A.

Bock, R. K.

Bordas, P.

Bosch-Ramon, V.

Bretz, T.

Britvitch, I.

Camara, M.

Carmona, E.

Chilingarian, A.

Coarasa, J. A.

Commichau, S.

Contreras, J. L.

Cortina, J.

Costado, M. T.

Curtef, V.

Danielyan, V.

Dazzi, F.

De Angelis, A.

Delgado, C.

de los Reyes, R.

De Lotto, B.

Domingo-Santamaria, E.

Dorner, D.

Doro, M.

Errando, M.

Fagiolini, M.

Ferenc, D.

Fernandez, E.

Firpo, R.

Flix, J.

Fonseca, M. V.

Font, L.

Fuchs, M.

Galante, N.

Garcia-Lopez, R. J.

Garczarczyk, M.

Gaug, M.

机构：

[1] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[2] IFAE, E-08193 Barcelona, Spain

[3] ETH, CH-8093 Zurich, Switzerland

[4] Univ Complutense Madrid, E-28040 Madrid, Spain

[5] Univ Autonoma Barcelona, E-08193 Barcelona, Spain

[6] Univ Wurzburg, D-97074 Wurzburg, Germany

[7] Univ Padua, I-35131 Padua, Italy

[8] Ist Nazl Fis Nucl, I-35131 Padua, Italy

[9] Univ Dortmund, D-44227 Dortmund, Germany

[10] Univ Lodz, PL-90236 Lodz, Poland

[11] Univ Barcelona, E-08028 Barcelona, Spain

[12] Yerevan Phys Inst, AM-375036 Yerevan, Armenia

[13] Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Spain

[14] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain

[15] Univ Udine, I-33100 Udine, Italy

[16] Ist Nazl Fis Nucl, I-33100 Udine, Italy

[17] Univ Siena, I-53100 Siena, Italy

[18] INFN Pisa, I-53100 Siena, Italy

[19] Univ Calif Davis, Davis, CA 95616 USA

[20] Humboldt Univ, D-12489 Berlin, Germany

[21] Turku Univ, Tuorla Observ, FI-21500 Piikkio, Finland

[22] Inst Nucl Energy Res, BG-1784 Sofia, Bulgaria

[23] Osserv Astron Trieste, INAF, I-34131 Trieste, Italy

[24] Ist Nazl Fis Nucl, I-34131 Trieste, Italy

[25] Univ Pisa, I-56126 Pisa, Italy

[26] INFN Pisa, I-56126 Pisa, Italy

[27] ICREA, E-08193 Bellaterra, Spain

[28] CSIC, IEEC, Inst Ciencias Espai, E-08193 Bellaterra, Spain

来源：

ASTROPHYSICAL JOURNAL | 2007年 / 664卷 / 02期

关键词：

gamma rays : observations; ISM; individual; (IC; 443; MAGIC J0616+225); supernova remnants;

D O I：

10.1086/520957

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the detection of a new source of very high energy (VHE; E-gamma >= 100 GeV) gamma- ray emission located close to the Galactic plane, MAGIC J0616 + 225, which is spatially coincident with supernova remnant IC 443. The observations were carried out with the MAGIC telescope in the periods 2005 December-2006 January and 2006 December-2007 January. Here we present results from this source, leading to a VHE gamma-ray signal with a statistical significance of 5.7 sigma in the 2006/2007 data and a measured differential gamma-ray flux consistent with a power law, described as dN(gamma)/(dA dt dE) = (1.0 +/- 0.2) x 10(-11) (E/0.4 TeV)(-3.1 +/- 0.3) cm(-2) s(-1) TeV-1. We briefly discuss the observational technique used and the procedure implemented for the data analysis. The results are placed in the context of the multiwavelength emission and the molecular environment found in the region of IC 443.

引用

页码：L87 / L90

页数：4

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