Details

Autor(en) / Beteiligte

• Aliu, E
• Anderhub, H
• Antonelli, L.A
• Antoranz, P
• Baixeras, C
• Bartko, H
• Bastieri, D
• Becker, J.K
• Bednarek, W
• Berger, K
• Bernardini, E
• Bigongiari, C
• Biland, A
• Bock, R.K
• Bonnoli, G
• Bordas, P
• Bosch-Ramon, V
• Bretz, T
• Camara, M
• Carmona, E
• Contreras, J.L
• Cortina, J
• Costado, M.T
• Covino, S
• Curtef, V
• Dazzi, F
• De Angelis, A
• De Cea del Pozo, E
• de los Reyes, R
• De Lotto, B
• De Sabata, F
• Mendez, C. Delgado
• Dominguez, A
• Errando, M
• Fernández, E
• Firpo, R
• Font, L
• Galante, N
• López, R.J. García
• Garczarczyk, M
• Gaug, M
• Goebel, F
• Höhne, D
• Hose, J
• Kneiske, T.M
• Kranich, D
• La Barbera, A
• Laille, A
• Longo, F
• López, M
• Maneva, G
• Mankuzhiyil, N
• Maraschi, L
• Meucci, M
• Meyer, M
• Mirzoyan, R
• Mizobuchi, S
• Moles, M
• Moralejo, A
• Nieto, D
• Nilsson, K
• Ninkovic, J
• Oya, I
• Panniello, M
• Paoletti, R
• Paredes, J.M
• Pasanen, M
• Pascoli, D
• Pegna, R.G
• Peruzzo, L
• Piccioli, A
• Puchades, N
• Raymers, A
• Rhode, W
• Ribó, M
• Rico, J
• Rissi, M
• Rügamer, S
• Satalecka, K
• Scalzotto, V
• Schmitt, R
• Schweizer, T
• Shayduk, M
• Shore, S.N
• Sidro, N
• Sobczynska, D
• Stamerra, A
• Stark, L.S
• Temnikov, P
• Tescaro, D
• Teshima, M
• Tluczykont, M
• Torres, D.F
• Turini, N
• Vankov, H
• Venturini, A
• Wagner, R.M
• Wittek, W
• Zabalza, V
• Zandanel, F

Titel

Very-High-Energy Gamma Rays from a Distant Quasar: How Transparent Is the Universe?

Ist Teil von

• Science (American Association for the Advancement of Science), 2008-06, Vol.320 (5884), p.1752-1754

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2008

Link zum Volltext

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• The atmospheric Cherenkov gamma-ray telescope MAGIC, designed for a low-energy threshold, has detected very-high-energy gamma rays from a giant flare of the distant Quasi-Stellar Radio Source (in short: radio quasar) 3C 279, at a distance of more than 5 billion light-years (a redshift of 0.536). No quasar has been observed previously in very-high-energy gamma radiation, and this is also the most distant object detected emitting gamma rays above 50 gigaelectron volts. Because high-energy gamma rays may be stopped by interacting with the diffuse background light in the universe, the observations by MAGIC imply a low amount for such light, consistent with that known from galaxy counts.