Acciari, V. A.V. A.AcciariAnsoldi, S.S.AnsoldiANTONELLI, Lucio AngeloLucio AngeloANTONELLIArbet Engels, A.A.Arbet EngelsArtero, M.M.ArteroAsano, K.K.AsanoBaack, D.D.BaackBabić, A.A.BabićBaquero, A.A.BaqueroBarres de Almeida, U.U.Barres de AlmeidaBarrio, J. A.J. A.BarrioTerzić, T.T.TerzićTeshima, M.M.TeshimaTosti, L.L.TostiTruzzi, S.S.TruzziTUTONE, AntonioAntonioTUTONEUbach, S.S.Ubachvan Scherpenberg, J.J.van ScherpenbergVanzo, G.G.VanzoVazquez Acosta, M.M.Vazquez AcostaBhattacharyya, W.W.BhattacharyyaLópez-Coto, R.R.López-CotoVentura, S.S.VenturaVerguilov, V.V.VerguilovVigorito, C. F.C. F.VigoritoVitale, V.V.VitaleVovk, I.I.VovkWill, M.M.WillWunderlich, C.C.WunderlichYamamoto, T.T.YamamotoZarić, D.D.ZarićAMBROSINO, FilippoFilippoAMBROSINOLópez-Moya, M.M.López-MoyaBIGONGIARI, CiroCiroBIGONGIARICecconi, M.M.CecconiCATANZARO, GiovanniGiovanniCATANZAROFerrara, C.C.FerraraFRASCA, AntonioAntonioFRASCAMUNARI, MATTEOMATTEOMUNARIGiustolisi, L.L.GiustolisiALONSO SANTIAGO, JavierJavierALONSO SANTIAGOGiarrusso, M.M.GiarrussoMUNARI, UlisseUlisseMUNARILópez-Oramas, A.A.López-OramasValisa, P.P.ValisaBiland, A.A.BilandBlanch, O.O.BlanchBökenkamp, H.H.BökenkampBONNOLI, GiacomoGiacomoBONNOLIBošnjak, Ž.Ž.BošnjakBusetto, G.G.BusettoCarosi, R.R.CarosiCeribella, G.G.CeribellaCerruti, M.M.CerrutiLoporchio, S.S.LoporchioChai, Y.Y.ChaiChilingarian, A.A.ChilingarianCikota, S.S.CikotaColak, S. M.S. M.ColakColombo, E.E.ColomboContreras, J. L.J. L.ContrerasCortina, J.J.CortinaCOVINO, StefanoStefanoCOVINOD'Amico, G.G.D'AmicoD'Elia, V.V.D'EliaMachado de Oliveira Fraga, B.B.Machado de Oliveira FragaDa Vela, P.P.Da VelaDAZZI, FrancescoFrancescoDAZZIDe Angelis, A.A.De AngelisDe Lotto, B.B.De LottoDel Popolo, A.A.Del PopoloDelfino, M.M.DelfinoDelgado, J.J.DelgadoDelgado Mendez, C.C.Delgado MendezDepaoli, D.D.DepaoliDi Pierro, F.F.Di PierroMaggio, C.C.MaggioDi Venere, L.L.Di VenereDo Souto Espiñeira, E.E.Do Souto EspiñeiraPrester, D. DominisD. DominisPresterDonini, A.A.DoniniDorner, D.D.DornerDoro, M.M.DoroElsaesser, D.D.ElsaesserFallah Ramazani, V.V.Fallah RamazaniFariña Alonso, L.L.Fariña AlonsoFattorini, A.A.FattoriniMajumdar, P.P.MajumdarFonseca, M. V.M. V.FonsecaFont, L.L.FontFruck, C.C.FruckFukami, S.S.FukamiFukazawa, Y.Y.FukazawaGarcía López, R. J.R. J.García LópezGarczarczyk, M.M.GarczarczykGasparyan, S.S.GasparyanGaug, M.M.GaugGiglietto, N.N.GigliettoMakariev, M.M.MakarievGiordano, F.F.GiordanoGliwny, P.P.GliwnyGodinović, N.N.GodinovićGREEN, JARRED GERSHONJARRED GERSHONGREENGreen, D.D.GreenHadasch, D.D.HadaschHahn, A.A.HahnHassan, T.T.HassanHeckmann, L.L.HeckmannHerrera, J.J.HerreraMallamaci, M.M.MallamaciHoang, J.J.HoangHrupec, D.D.HrupecHütten, M.M.HüttenInada, T.T.InadaIshio, K.K.IshioIwamura, Y.Y.IwamuraJiménez Martínez, I.I.Jiménez MartínezJormanainen, J.J.JormanainenJouvin, L.L.JouvinKerszberg, D.D.KerszbergManeva, G.G.ManevaKobayashi, Y.Y.KobayashiKubo, H.H.KuboKushida, J.J.KushidaLAMASTRA, AlessandraAlessandraLAMASTRALelas, D.D.LelasLEONE, FrancescoFrancescoLEONELindfors, E.E.LindforsLinhoff, L.L.LinhoffLOMBARDI, SaverioSaverioLOMBARDILongo, F.F.LongoBatković, I.I.BatkovićManganaro, M.M.ManganaroMannheim, K.K.MannheimMaraschi, L.L.MaraschiMariotti, M.M.MariottiMartínez, M.M.MartínezMas Aguilar, A.A.Mas AguilarMazin, D.D.MazinMenchiari, S.S.MenchiariMender, S.S.MenderMićanović, S.S.MićanovićBecerra González, J.J.Becerra GonzálezMiceli, D.D.MiceliMiener, T.T.MienerMiranda, J. M.J. M.MirandaMirzoyan, R.R.MirzoyanMolina, E.E.MolinaMoralejo, A.A.MoralejoMorcuende, D.D.MorcuendeMoreno, V.V.MorenoMoretti, E.E.MorettiNakamori, T.T.NakamoriBednarek, W.W.BednarekNAVA, LaraLaraNAVANeustroev, V.V.NeustroevNievas Rosillo, M.M.Nievas RosilloNigro, C.C.NigroNilsson, K.K.NilssonNishijima, K.K.NishijimaNoda, K.K.NodaNozaki, S.S.NozakiOhtani, Y.Y.OhtaniOka, T.T.OkaBellizzi, L.L.BellizziOtero-Santos, J.J.Otero-SantosPAIANO, SimonaSimonaPAIANOPalatiello, M.M.PalatielloPaneque, D.D.PanequePaoletti, R.R.PaolettiParedes, J. M.J. M.ParedesPavletić, L.L.PavletićPeñil, P.P.PeñilPERSIC, MassimoMassimoPERSICPihet, M.M.PihetBernardini, E.E.BernardiniPrada Moroni, P. G.P. G.Prada MoroniPRANDINI, ELISAELISAPRANDINIPriyadarshi, C.C.PriyadarshiPuljak, I.I.PuljakRhode, W.W.RhodeRibó, M.M.RibóRico, J.J.RicoRIGHI, ChiaraChiaraRIGHIRugliancich, A.A.RugliancichSahakyan, N.N.SahakyanBernardos, M.M.BernardosSaito, T.T.SaitoSakurai, S.S.SakuraiSatalecka, K.K.SataleckaSATURNI, Francesco GabrieleFrancesco GabrieleSATURNISchleicher, B.B.SchleicherSchmidt, K.K.SchmidtSchweizer, T.T.SchweizerSitarek, J.J.SitarekŠnidarić, I.I.ŠnidarićSobczynska, D.D.SobczynskaBerti, A.A.BertiSpolon, A.A.SpolonSTAMERRA, AntonioAntonioSTAMERRAStrišković, J.J.StriškovićStrom, D.D.StromStrzys, M.M.StrzysSuda, Y.Y.SudaSurić, T.T.SurićTakahashi, M.M.TakahashiTakeishi, R.R.TakeishiTAVECCHIO, FabrizioFabrizioTAVECCHIOBesenrieder, J.J.BesenriederTemnikov, P.P.Temnikov2025-02-122025-02-1220222397-3366http://hdl.handle.net/20.500.12386/35922Classical novae are cataclysmic binary star systems in which the matter of a companion star is accreted on a white dwarf<SUP>1,2</SUP>. Accumulation of hydrogen in a layer eventually causes a thermonuclear explosion on the surface of the white dwarf<SUP>3</SUP>, brightening the white dwarf to ~10<SUP>5</SUP> solar luminosities and triggering ejection of the accumulated matter. Novae provide the extreme conditions required to accelerate particles, electrons or protons, to high energies. Here we present the detection of gamma rays by the MAGIC telescopes from the 2021 outburst of RS Ophiuchi, a recurrent nova with a red giant companion, which allowed us to accurately characterize the emission from a nova in the 60 GeV to 250 GeV energy range. The theoretical interpretation of the combined Fermi LAT and MAGIC data suggests that protons are accelerated to hundreds of gigaelectronvolts in the nova shock. Such protons should create bubbles of enhanced cosmic ray density, of the order of 10 pc, from the recurrent novae.ELETTRONICOenArticle10.1038/s41550-022-01640-z2-s2.0-85128070325PPRN:22712317https://www.nature.com/articles/s41550-022-01640-zhttps://api.elsevier.com/content/abstract/scopus_id/851280703252022NatAs...6..689AFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_10 High energy and particle astronomy – X-rays, cosmic rays, gamma rays, neutrinos