Bibcode
Anderhub, H.; Antonelli, L. A.; Antoranz, P.; Backes, M.; Baixeras, C.; Balestra, S.; Barrio, J. A.; Bastieri, D.; Becerra González, J.; Becker, J. K.; Bednarek, W.; Berdyugin, A.; Berger, K.; Bernardini, E.; Biland, A.; Bock, R. K.; Bonnoli, G.; Bordas, P.; Borla Tridon, D.; Bosch-Ramon, V.; Bose, D.; Braun, I.; Bretz, T.; Britzger, D.; Camara, M.; Carmona, E.; Carosi, A.; Colin, P.; Commichau, S.; Contreras, J. L.; Cortina, J.; Costado, M. T.; Covino, S.; Dazzi, F.; De Angelis, A.; de Cea del Pozo, E.; De los Reyes, R.; De Lotto, B.; De Maria, M.; De Sabata, F.; Delgado Mendez, C.; Domínguez, A.; Dominis Prester, D.; Dorner, D.; Doro, M.; Elsaesser, D.; Errando, M.; Ferenc, D.; Fernández, E.; Firpo, R.; Fonseca, M. V.; Font, L.; Galante, N.; García López, R. J.; Garczarczyk, M.; Gaug, M.; Godinovic, N.; Goebel, F.; Hadasch, D.; Herrero, A.; Hildebrand, D.; Höhne-Mönch, D.; Hose, J.; Hrupec, D.; Hsu, C. C.; Jogler, T.; Klepser, S.; Kranich, D.; La Barbera, A.; Laille, A.; Leonardo, E.; Lindfors, E.; Lombardi, S.; Longo, F.; López, M.; Lorenz, E.; Majumdar, P.; 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.; Moles, M.; Moralejo, A.; Nieto, D.; Nilsson, K.; Ninkovic, J.; Orito, R.; Oya, I.; Paoletti, R.; Paredes, J. M.; Pasanen, M.; Pascoli, D. et al.
Bibliographical reference
The Astrophysical Journal Letters, Volume 704, Issue 2, pp. L129-L133 (2009).
Advertised on:
10
2009
Citations
80
Refereed citations
65
Description
The MAGIC Collaboration reports the detection of the blazar S5 0716+714
(z = 0.31 ± 0.08) in very high energy gamma rays. The
observations were performed in 2007 November and in 2008 April, and were
triggered by the Kungliga Vetenskapliga Akademi telescope due to the
high optical state of the object. An overall significance of the signal
accounts to S = 5.8σ for 13.1 hr of data. Most of the signal (S =
6.9σ) comes from the 2008 April data sample during a higher
optical state of the object suggesting a possible correlation between
the Very High Energy γ-ray and optical emissions. The differential
energy spectrum of the 2008 data sample follows a power law with a
photon index of Γ = 3.45 ± 0.54stat ±
0.2syst, and the integral flux above 400 GeV is at the level
of (7.5 ± 2.2stat ± 2.3syst) ×
10-12 cm-2 s-1, corresponding to a 9%
Crab Nebula flux. Modeling of the broadband spectral energy distribution
indicates that a structured jet model appears to be more promising in
describing the available data than a simple one-zone synchrotron
self-Compton model.
Related projects
Particle Astrophysics
The MAGIC Collaboration is integrated by 20 research institutes and university departments from Armenia, Bulgaria, Finland, Germany, Italy, Poland, Spain, Switzerland and USA. The collaboration comprises two 17m diameter telescopes, located at the Roque de los Muchachos Observatory, designed to measure the Cherenkov radiation associated with
Ramón
García López