Bibcode
Aleksić, J.; Alvarez, E. A.; Antonelli, L. A.; Antoranz, P.; Ansoldi, S.; Asensio, M.; Backes, M.; Barres de Almeida, U.; Barrio, J. A.; Bastieri, D.; Becerra-González, J.; Bednarek, W.; Berger, K.; Bernardini, E.; Biland, A.; Blanch, O.; Bock, R. K.; Boller, A.; Bonnoli, G.; Borla Tridon, D.; Bretz, T.; Cañellas, A.; Carmona, E.; Carosi, A.; 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 Cea del Pozo, E.; De Lotto, B.; Delgado-Mendez, C.; Diago-Ortega, A.; Doert, M.; Domínguez, A.; Dominis Prester, D.; Dorner, D.; Doro, M.; Eisenacher, D.; Elsaesser, D.; Ferenc, D.; Fonseca, M. V.; Font, L.; Fruck, C.; García-López, R. J.; Garczarczyk, M.; Garrido Terrats, D.; Gaug, M.; Giavitto, G.; Godinović, N.; González Muñoz, A.; Gozzini, S. R.; Hadasch, D.; Häfner, D.; Herrero, A.; Hildebrand, D.; Hose, J.; Hrupec, D.; Huber, B.; Jankowski, F.; Jogler, T.; Kadenius, V.; Kellermann, H.; Klepser, S.; Krähenbühl, T.; Krause, J.; La Barbera, A.; Lelas, D.; Leonardo, E.; Lewandowska, N.; Lindfors, E.; Lombardi, S.; López, M.; López-Coto, R.; López-Oramas, A.; Lorenz, E.; Makariev, M.; Maneva, G.; Mankuzhiyil, N.; Mannheim, K.; Maraschi, L.; Mariotti, M.; Martínez, M.; Mazin, D.; Meucci, M.; Miranda, J. M.; Mirzoyan, R.; Moldón, J.; Moralejo, A.; Munar-Adrover, P.; Niedzwiecki, A.; Nieto, D.; Nilsson, K.; Nowak, N.; Orito, R. et al.
Referencia bibliográfica
Astronomy and Astrophysics, Volume 544, id.A142
Fecha de publicación:
8
2012
Revista
Número de citas
58
Número de citas referidas
51
Descripción
Context. We present the discovery of very high energy (VHE, E > 100
GeV) γ-ray emission from the BL Lac object 1ES 1215+303 by the
MAGIC telescopes and simultaneous multi-wavelength data in a broad
energy range from radio to γ-rays. Aims: We study the VHE
γ-ray emission from 1ES 1215+303 and its relation to the emissions
in other wavelengths. Methods: Triggered by an optical outburst,
MAGIC observed the source in 2011 January - February for 20.3 h. The
target was monitored in the optical R-band by the KVA telescope that
also performed optical polarization measurements. We triggered target of
opportunity observations with the Swift satellite and obtained
simultaneous and quasi-simultaneous data from the Fermi Large Area
Telescope and from the Metsähovi radio telescope. We also present
the analysis of older MAGIC data taken in 2010. Results: The
MAGIC observations of 1ES 1215+303 carried out in 2011 January -
February resulted in the first detection of the source at VHE with a
statistical significance of 9.4σ. Simultaneously, the source was
observed in a high optical and X-ray state. In 2010 the source was
observed in a lower state in optical, X-ray, and VHE, while the GeV
γ-ray flux and the radio flux were comparable in 2010 and 2011.
The spectral energy distribution obtained with the 2011 data can be
modeled with a simple one zone SSC model, but it requires extreme values
for the Doppler factor or the electron energy distribution.
Proyectos relacionados
Astrofísica de Partículas
El Grupo de Astrofísica de Partículas del IAC participa activamente en tres grandes colaboraciones internacionales de astrofísica de muy altas energías: AMS (Alpha Magnetic Spectrometer), los telescopios de radiación Cherenkov MAGIC I y II, y el Cherenkov Telescope Array (CTA). AMS es un detector de partículas diseñado para operar en el espacio, a
Ramón
García López