Aims. We searched for very high energy (VHE)gamma-ray emission from the supernova remnant Cassiopeia A Methods. The shell-type supernova remnant Cassiopeia A was observed with the 17 m MAGIC telescope between July 2006 and January 2007 for a total time of 47 h. Results. The source was detected above an energy of 250 GeV with a significance of 5.2s and a photon flux above 1 TeV of (7.3 +/- 0.7(stat) +/- 2.2(sys)) x 10(-13) cm(-2)s(-1). The photon spectrum is compatible with a power law dN/dE proportional to E-r with a photon index Gamma = 2.3 +/- 0.2(stat) +/- 0.2(sys). The source is point- like within the angular resolution of the telescope.
Observation of VHE gamma-rays from Cassiopeia A with the MAGIC telescope / J., Albert; E., Aliu; H., Anderhub; P., Antoranz; A., Armada; C., Baixeras; J. A., Barrio; H., Bartko; D., Bastieri; J. K., Becker; W., Bednarek; K., Berger; C., Bigongiari; A., Biland; R. K., Bock; P., Bordas; V., Bosch Ramon; T., Bretz; I., Britvitch; M., Camara; E., Carmona; A., Chilingarian; J. A., Coarasa; S., Commichau; J. L., Contreras; J., Cortina; M. T., Costado; V., Curtef; V., Danielyan; F., Dazzi; A. D., Angelis; C., Delgado; R. d., los Reyes; B. D., Lotto; E., Domingo Santamaria; D., Dorner; M., Doro; M., Errando; M., Fagiolini; D., Ferenc; E., Fernandez; R., Firpo; J., Flix; M. V., Fonseca; L., Font; M., Fuchs; N., Galante; R., Garcia Lopez; M., Garczarczyk; M., Gaug; M., Giller; F., Goebel; D., Hakobyan; M., Hayashida; T., Hengstebeck; A., Herrero; D., Hohne; J., Hose; C. C., Hsu; P., Jacon; T., Jogler; R., Kosyra; D., Kranich; R., Kritzer; A., Laille; E., Lindfors; S., Lombardi; Longo, Francesco; J., Lopez; M., Lopez; E., Lorenz; P., Majumdar; G., Maneva; K., Mannheim; O., Mansutti; M., Mariotti; M., Martinez; D., Mazin; C., Merck; M., Meucci; M., Meyer; J. M., Miranda; R., Mirzoyan; S., Mizobuchi; A., Moralejo; K., Nilsson; J., Ninkovic; E., Ona Wilhelmi; N., Otte; I., Oya; D., Paneque; M., Panniello; R., Paoletti; J. M., Paredes; M., Pasanen; D., Pascoli; F., Pauss; R., Pegna; M., Persic; L., Peruzzo; A., Piccioli; M., Poller; N., Puchades; E., Prandini; A., Raymers; W., Rhode; M., Ribo; J., Rico; M., Rissi; A., Robert; S., Rugamer; A., Saggion; A., Sanchez; P., Sartori; V., Scalzotto; V., Scapin; R., Schmitt; T., Schweizer; M., Shayduk; K., Shinozaki; S. N., Shore; N., Sidro; A., Sillanpaa; D., Sobczynska; A., Stamerra; L. S., Stark; L., Takalo; P., Temnikov; D., Tescaro; M., Teshima; N., Tonello; D. F., Torres; N., Turini; H., Vankov; V., Vitale; R. M., Wagner; T., Wibig; W., Wittek; F., Zandanel; R., Zanin; J., Zapatero. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - STAMPA. - 474:(2007), pp. 937-940. [10.1051/0004-6361:20078168]
Observation of VHE gamma-rays from Cassiopeia A with the MAGIC telescope
LONGO, FRANCESCO;
2007-01-01
Abstract
Aims. We searched for very high energy (VHE)gamma-ray emission from the supernova remnant Cassiopeia A Methods. The shell-type supernova remnant Cassiopeia A was observed with the 17 m MAGIC telescope between July 2006 and January 2007 for a total time of 47 h. Results. The source was detected above an energy of 250 GeV with a significance of 5.2s and a photon flux above 1 TeV of (7.3 +/- 0.7(stat) +/- 2.2(sys)) x 10(-13) cm(-2)s(-1). The photon spectrum is compatible with a power law dN/dE proportional to E-r with a photon index Gamma = 2.3 +/- 0.2(stat) +/- 0.2(sys). The source is point- like within the angular resolution of the telescope.Pubblicazioni consigliate
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