| Título | Observation of pulsed gamma-rays above 25 GeV from the Crab pulsar with MAGIC. |
| Publication Type | Journal Article |
| Year of Publication | 2008 |
| Autores | 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, Elsässer, D, Errando, M, Fagiolini, M, Ferenc, D, Fernández, E, Firpo, R, Fonseca, MV, Font, L, Galante, N, López, RJGarcía, Garczarczyk, M, Gaug, M, Goebel, F, Hadasch, D, Hayashida, M, Herrero, A, Höhne, D, Hose, J, Hsu, CC, Huber, S, Jogler, T, 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, Moles, M, Moralejo, A, Nieto, D, Nilsson, K, Ninkovic, J, Otte, N, Oya, I, 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, 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, de Jager, OC, E Wilhelmi, deOña |
| Corporate Authors | MAGIC Collaboration |
| Journal | Science |
| Volume | 322 |
| Issue | 5905 |
| Pagination | 1221-4 |
| Date Published | 2008 Nov 21 |
| ISSN | 1095-9203 |
| Abstract | One fundamental question about pulsars concerns the mechanism of their pulsed electromagnetic emission. Measuring the high-end region of a pulsar's spectrum would shed light on this question. By developing a new electronic trigger, we lowered the threshold of the Major Atmospheric gamma-ray Imaging Cherenkov (MAGIC) telescope to 25 giga-electron volts. In this configuration, we detected pulsed gamma-rays from the Crab pulsar that were greater than 25 giga-electron volts, revealing a relatively high cutoff energy in the phase-averaged spectrum. This indicates that the emission occurs far out in the magnetosphere, hence excluding the polar-cap scenario as a possible explanation of our measurement. The high cutoff energy also challenges the slot-gap scenario.
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| DOI | 10.1126/science.1164718 |
| Alternate Journal | Science |
| PubMed ID | 18927358 |
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