Titolo: | Observation of inverse Compton emission from a long γ-ray burst |
Autori: | MAGIC Collaboration Acciari, V. A. Ansoldi, S. ANTONELLI, Lucio Angelo Engels, A. Arbet Baack, D. Babić, A. Banerjee, B. Barres de Almeida, U. Barrio, J. A. Becerra González, J. Maraschi, L. Mariotti, M. Martínez, M. Mazin, D. Mićanović, S. Miceli, D. Minev, M. Miranda, J. M. Mirzoyan, R. Molina, E. Bednarek, W. Moralejo, A. Morcuende, D. Moreno, V. Moretti, E. Munar-Adrover, P. Neustroev, V. Nigro, C. Nilsson, K. Ninci, D. Nishijima, K. Bellizzi, L. Noda, K. Nogués, L. Nozaki, S. PAIANO, Simona Palatiello, M. Paneque, D. Paoletti, R. Paredes, J. M. Peñil, P. Peresano, M. Bernardini, E. PERSIC, Massimo Moroni, P. G. Prada PRANDINI, ELISA Puljak, I. Rhode, W. Ribó, M. Rico, J. Righi, Chiara Rugliancich, A. Saha, L. Berti, A. Sahakyan, N. Saito, T. Sakurai, S. Satalecka, K. Schmidt, K. Schweizer, T. Sitarek, J. Šnidarić, I. Sobczynska, D. Somero, A. Besenrieder, J. STAMERRA, Antonio Strom, D. Strzys, M. Suda, Y. Surić, T. Takahashi, M. TAVECCHIO, Fabrizio Temnikov, P. Terzić, T. Teshima, M. Bhattacharyya, W. Torres-Albà, N. Tosti, L. Vagelli, V. van Scherpenberg, J. Vanzo, G. Vazquez Acosta, M. Vigorito, C. F. Vitale, V. Vovk, I. Will, M. BIGONGIARI, Ciro Zarić, D. Nava, Lara Veres, P. Bhat, P. N. Briggs, M. S. Cleveland, W. H. Hamburg, R. Hui, C. M. Mailyan, B. Preece, R. D. Biland, A. Roberts, O. J. von Kienlin, A. Wilson-Hodge, C. A. Kocevski, D. Arimoto, M. Tak, D. Asano, K. Axelsson, M. Barbiellini, G. Bissaldi, E. Blanch, O. Dirirsa, F. Fana Gill, R. Granot, J. McEnery, J. Omodei, N. Razzaque, S. Piron, F. Racusin, J. L. Thompson, D. J. CAMPANA, Sergio Bonnoli, G. BERNARDINI, Maria Grazia Kuin, N. P. M. Siegel, M. H. Cenko, S. B. O'Brien, P. CAPALBI, Milvia Daı, A. de Pasquale, M. Gropp, J. Klingler, N. Bošnjak, Ž. Osborne, J. P. PERRI, Matteo Starling, R. L. C. TAGLIAFERRI, Gianpiero Tohuvavohu, A. URSI, ALESSANDRO TAVANI, MARCO CARDILLO , MARTINA CASENTINI, CLAUDIO PIANO, Giovanni Busetto, G. EVANGELISTA, YURI VERRECCHIA, Francesco PITTORI, Carlotta LUCARELLI, Fabrizio BULGARELLI, ANDREA PARMIGGIANI, NICOLO Anderson, G. E. Anderson, J. P. BERNARDI, GIANNI Bolmer, J. Carosi, R. Caballero-García, M. D. Carrasco, I. M. Castellón, A. Castro Segura, N. Castro-Tirado, A. J. Cherukuri, S. V. Cockeram, A. M. D'AVANZO, Paolo DI DATO, ANDREA Diretse, R. Ceribella, G. Fender, R. P. Fernández-García, E. Fynbo, J. P. U. Fruchter, A. S. Greiner, J. Gromadzki, M. Heintz, K. E. Heywood, I. van der Horst, A. J. Hu, Y. -D. Chai, Y. Inserra, C. Izzo, L. Jaiswal, V. Jakobsson, P. Japelj, J. Kankare, E. Kann, D. A. Kouveliotou, C. Klose, S. Levan, A. J. Chilingaryan, A. Li, X. Y. LOTTI, Simone Maguire, K. Malesani, D. B. Manulis, I. MARONGIU, MARCO Martin, S. MELANDRI, Andrea Michałowski, M. J. Miller-Jones, J. C. A. Cikota, S. Misra, K. Moin, A. Mooley, K. P. Nasri, S. Nicholl, M. Noschese, A. Novara, G. Pandey, S. B. Peretti, E. Pérez Del Pulgar, C. J. Colak, S. M. Pérez-Torres, M. A. Perley, D. A. PIRO, LUIGI Ragosta, F. Resmi, L. RICCI, ROBERTO ROSSI, Andrea SANCHEZ RAMIREZ, RUBEN Selsing, J. Schulze, S. Colin, U. Smartt, S. J. Smith, I. A. Sokolov, V. V. Stevens, J. Tanvir, N. R. Thöne, C. C. Tiengo, A. Tremou, E. Troja, E. de Ugarte Postigo, A. Colombo, E. Valeev, A. F. Vergani, S. D. Wieringa, M. Woudt, P. A. Xu, D. Yaron, O. Young, D. R. Contreras, J. L. Cortina, J. COVINO, Stefano D'Elia, V. da Vela, P. Dazzi, F. de Angelis, A. de Lotto, B. Delfino, M. Delgado, J. Depaoli, D. di Pierro, F. di Venere, L. Do Souto Espiñeira, E. Dominis Prester, D. Donini, A. Dorner, D. Doro, M. Elsaesser, D. Fallah Ramazani, V. Fattorini, A. Ferrara, G. Fidalgo, D. Foffano, L. Fonseca, M. V. Font, L. Fruck, C. Fukami, S. García López, R. J. Garczarczyk, M. Gasparyan, S. Gaug, M. Giglietto, N. Giordano, F. Godinović, N. Green, D. Guberman, D. Hadasch, D. Hahn, A. Herrera, J. Hoang, J. Hrupec, D. Hütten, M. Inada, T. Inoue, S. Ishio, K. Iwamura, Y. Jouvin, L. Kerszberg, D. Kubo, H. Kushida, J. LAMASTRA, Alessandra Lelas, D. LEONE, FRANCESCO Lindfors, E. LOMBARDI, Saverio Longo, F. López, M. López-Coto, R. López-Oramas, A. Loporchio, S. Machado de Oliveira Fraga, B. Maggio, C. Majumdar, P. Makariev, M. Mallamaci, M. Maneva, G. Manganaro, M. Mannheim, K. |
Data pubblicazione: | 2019 |
Rivista: | NATURE |
Numero: | 575 |
Fascicolo: | 7783 |
Da pagina:: | 459 |
Abstract: | Long-duration γ-ray bursts (GRBs) originate from ultra-relativistic jets launched from the collapsing cores of dying massive stars. They are characterized by an initial phase of bright and highly variable radiation in the kiloelectronvolt-to-megaelectronvolt band, which is probably produced within the jet and lasts from milliseconds to minutes, known as the prompt emission. Subsequently, the interaction of the jet with the surrounding medium generates shock waves that are responsible for the afterglow emission, which lasts from days to months and occurs over a broad energy range from the radio to the gigaelectronvolt bands. The afterglow emission is generally well explained as synchrotron radiation emitted by electrons accelerated by the external shock. Recently, intense long-lasting emission between 0.2 and 1 teraelectronvolts was observed from GRB 190114C. Here we report multi-frequency observations of GRB 190114C, and study the evolution in time of the GRB emission across 17 orders of magnitude in energy, from 5 × 10^-6 to 10^12 electronvolts. We find that the broadband spectral energy distribution is double-peaked, with the teraelectronvolt emission constituting a distinct spectral component with power comparable to the synchrotron component. This component is associated with the afterglow and is satisfactorily explained by inverse Compton up-scattering of synchrotron photons by high-energy electrons. We find that the conditions required to account for the observed teraelectronvolt component are typical for GRBs, supporting the possibility that inverse Compton emission is commonly produced in GRBs. |
URI: | http://hdl.handle.net/20.500.12386/30372 |
URL: | https://www.nature.com/articles/s41586-019-1754-6 |
ISSN: | 0028-0836 |
DOI: | 10.1038/s41586-019-1754-6 |
Bibcode ADS: | 2019Natur.575..459M |
Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista
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