Bibcode
DOI
Albert, J.; Aliu, E.; Anderhub, H.; Antoranz, P.; Armada, A.; Baixeras, C.; Barrio, J. A.; Bartko, H.; Bastieri, D.; Becker, J.; 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.; Ciprini, S.; 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-Santamaría, E.; Dorner, D.; Doro, M.; Errando, M.; Fagiolini, M.; Ferenc, D.; Fernández, E.; Firpo, R.; Flix, J.; Fonseca, M. V.; Font, L.; Fuchs, M.; Galante, N.; García-López, R.; Garczarczyk, M.; Gaug, M.; Giller, M.; Goebel, F.; Hakobyan, D.; Hayashida, M.; Hengstebeck, T.; Herrero, A.; Höhne, D.; Hose, J.; Hsu, C. C.; Jacon, P.; Jogler, T.; Kalekin, O.; Kosyra, R.; Kranich, D.; Kritzer, R.; Laille, A.; Lenisa, T.; Liebing, P.; Lindfors, E.; Lombardi, S.; Longo, F.; López, J.; López, M.; Lorenz, E.; Majumdar, P.; Maneva, G.; Mannheim, K.; Mansutti, O.; Mariotti, M.; Martínez, M.; Mazin, D.; Merck, C.; Meucci, M.; Meyer, M.; Miranda, J. M.; Mirzoyan, R.; Mizobuchi, S.; Moralejo, A.; Nilsson, K.; Ninkovic, J.; Oña-Wilhelmi, E.; Otte, N.; Oya, I.; Paneque, D.; Panniello, M.; Paoletti, R.; Paredes, J. M.; Pasanen, M.; Pascoli, D. et al.
Referencia bibliográfica
The Astrophysical Journal, Volume 667, Issue 1, pp. 358-366.
Fecha de publicación:
9
2007
Revista
Número de citas
92
Número de citas referidas
71
Descripción
During its first data cycle, between 2005 and the beginning of 2006, the
fast repositioning system of the MAGIC telescope allowed the observation
of nine different gamma-ray bursts as possible sources of very high
energy γ-rays. These observations were triggered by alerts from
Swift, HETE-2, and INTEGRAL; they started as quickly as possible after
the alerts and lasted for several minutes, with an energy threshold
varying between 80 and 200 GeV, depending on the zenith angle of the
burst. No evidence for gamma signals was found, and upper limits for the
flux were derived for all events using the standard analysis chain of
MAGIC. For the bursts with measured redshifts, the upper limits are
compatible with a power-law extrapolation, when the intrinsic fluxes are
evaluated taking into account the attenuation due to the scattering in
the metagalactic radiation field.