Bibcode
Aleksić, J.; Alvarez, E. A.; Antonelli, L. A.; Antoranz, P.; Asensio, M.; Backes, M.; Barrio, J. A.; Bastieri, D.; Becerra-González, J.; Bednarek, W.; Berdyugin, A.; Berger, K.; Bernardini, E.; Biland, A.; Blanch, O.; Bock, R. K.; Boller, A.; Bonnoli, G.; Borla Tridon, D.; Braun, I.; Bretz, T.; Cañellas, A.; Carmona, E.; Carosi, A.; Colin, P.; Colombo, E.; Contreras, J. L.; Cortina, J.; Cossio, L.; Covino, S.; 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.; Elsaesser, D.; Ferenc, D.; Fonseca, M. V.; Font, L.; Fruck, C.; García-López, R. J.; Garczarczyk, M.; Garrido, D.; Gaug, M.; Giavitto, G.; Godinović, N.; Hadasch, D.; Häfner, D.; Herrero, A.; Hildebrand, D.; Höhne-Mönch, D.; Hose, J.; Hrupec, D.; Huber, B.; Jogler, T.; Kellermann, H.; Klepser, S.; Krähenbühl, T.; Krause, J.; La Barbera, A.; Lelas, D.; Leonardo, E.; Lindfors, E.; Lombardi, S.; López, M.; 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.; Miyamoto, H.; Moldón, J.; Moralejo, A.; Munar-Adrover, P.; Nieto, D.; Nilsson, K.; Orito, R.; Oya, I.; Paneque, D.; Paoletti, R.; Pardo, S.; Paredes, J. M.; Partini, S.; Pasanen, M.; Pauss, F. et al.
Referencia bibliográfica
Astronomy and Astrophysics, Volume 544, id.A96
Fecha de publicación:
8
2012
Revista
Número de citas
26
Número de citas referidas
20
Descripción
Context. We present the results of a long M 87 monitoring campaign in
very high energy γ-rays with the MAGIC-I Cherenkov telescope. Aims: We aim to model the persistent non-thermal jet emission by
monitoring and characterizing the very high energy γ-ray emission
of M 87 during a low state. Methods: A total of 150 h of data
were taken between 2005 and 2007 with the single MAGIC-I telescope, out
of which 128.6 h survived the data quality selection. We also collected
data in the X-ray and Fermi-LAT bands from the literature (partially
contemporaneous). Results: No flaring activity was found during
the campaign. The source was found to be in a persistent low-emission
state, which was at a confidence level of 7σ. We present the
spectrum between 100 GeV and 2 TeV, which is consistent with a simple
power law with a photon index Γ = 2.21 ± 0.21 and a flux
normalization at 300 GeV of (7.7 ± 1.3) × 10-8
TeV-1 s-1 m-2. The extrapolation of the
MAGIC spectrum into the GeV energy range matches the previously
published Fermi-LAT spectrum well, covering a combined energy range of
four orders of magnitude with the same spectral index. We model the
broad band energy spectrum with a spine layer model, which can
satisfactorily describe our data.
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