| Título | Very-high-energy gamma rays from a distant quasar: how transparent is the universe? |
| Publication Type | Journal Article |
| Year of Publication | 2008 |
| Autores | Albert, J, Aliu, E, Anderhub, H, Antonelli, LA, Antoranz, P, Backes, M, Baixeras, C, Barrio, JA, Bartko, H, Bastieri, D, Becker, JK, Bednarek, W, Berger, K, Bernardini, E, Bigongiari, C, Biland, A, Bock, RK, Bonnoli, G, Bordas, P, Bosch-Ramon, V, Bretz, T, Britvitch, I, Camara, M, Carmona, E, Chilingarian, A, Commichau, S, Contreras, JL, Cortina, J, Costado, MT, Covino, S, Curtef, V, Dazzi, F, De Angelis, A, E del Pozo, DCea, R Reyes, Dlos, De Lotto, B, De Maria, M, De Sabata, F, C Mendez, D, Dominguez, A, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernández, E, Firpo, R, Fonseca, MV, Font, L, Galante, N, López, RJGarcía, Garczarczyk, M, Gaug, M, Goebel, F, Hayashida, M, Herrero, A, Höhne, D, Hose, J, Hsu, CC, Huber, S, Jogler, T, Kneiske, TM, 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, Martinez, M, Mazin, D, Meucci, M, Meyer, M, Miranda, JM, Mirzoyan, R, Mizobuchi, S, Moles, M, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Otte, N, Oya, I, Panniello, M, Paoletti, R, Paredes, JM, Pasanen, M, Pascoli, D, Pauss, F, Pegna, RG, Perez-Torres, MA, Persic, M, Peruzzo, L, Piccioli, A, Prada, F, Prandini, E, Puchades, N, Raymers, A, Rhode, W, Ribó, M, Rico, J, Rissi, M, Robert, A, Rügamer, S, Saggion, A, Saito, TY, Salvati, M, Sanchez-Conde, M, Sartori, P, Satalecka, K, Scalzotto, V, Scapin, V, Schmitt, R, Schweizer, T, Shayduk, M, Shinozaki, K, Shore, SN, Sidro, N, Sierpowska-Bartosik, A, Sillanpää, A, Sobczynska, D, Spanier, F, Stamerra, A, Stark, LS, Takalo, L, Tavecchio, F, Temnikov, P, Tescaro, D, Teshima, M, Tluczykont, M, Torres, DF, Turini, N, Vankov, H, Venturini, A, Vitale, V, Wagner, RM, Wittek, W, Zabalza, V, Zandanel, F, Zanin, R, Zapatero, J |
| Corporate Authors | MAGIC Collaboration |
| Journal | Science |
| Volume | 320 |
| Issue | 5884 |
| Pagination | 1752-4 |
| Date Published | 2008 Jun 27 |
| ISSN | 1095-9203 |
| Abstract | 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.
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| DOI | 10.1126/science.1157087 |
| Alternate Journal | Science |
| PubMed ID | 18583607 |
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