AHARONIAN, F.; BENKHALI, F. Ait; ANGÜNER, E.O.; ASHKAR, H.; BACKES, M.; BAGHMANYAN, V.; MARTINS, V. Barbosa; BATZOFIN, R.; BECHERINI, Y.; BERGE, D.; BERNLÖHR, K.; BI, B.; BÖTTCHER, M.; BOISSON, C.; BOLMONT, J.; DE BONY DE LAVERGNE, M.; BREUHAUS, M.; BROSE, R.; BRUN, F.; CAROFF, S.; CASANOVA, S.; CERRUTI, M.; CHAND, T.; CHEN, A.; COTTER, G.; MBARUBUCYEYE, J. Damascene; DJANNATI-ATAÏ, A.; DMYTRIIEV, A.; DOROSHENKO, V.; DUFFY, C.; EGBERTS, K.; ERNENWEIN, J.-P.; FEGAN, S.; FEIJEN, K.; FIASSON, A.; DE CLAIRFONTAINE, G. Fichet; FONTAINE, G.; FÜSSLING, M.; FUNK, S.; GABICI, S.; GALLANT, Y.A.; GHAFOURIZADEH, S.; GIAVITTO, G.; GIUNTI, L.; GLAWION, D.; GLICENSTEIN, J.F.; GRONDIN, M.-H.; HERMANN, G.; HINTON, J.A.; HÖRBE, M.; HOFMANN, W.; HOISCHEN, C.; HOLCH, T.L.; HOLLER, M.; HORNS, D.; HUANG, Zhiqiu; JAMROZY, M.; JANKOWSKY, F.; JUNG-RICHARDT, I.; KASAI, E.; KATARZYŃSKI, K.; KATZ, U.; KHANGULYAN, D.; KHÉLIFI, B.; KLEPSER, S.; KLUŹNIAK, W.; KOMIN, Nu.; KONNO, R.; KOSACK, K.; KOSTUNIN, D.; STUM, S. Le; LEMIÈRE, A.; LEMOINE-GOUMARD, M.; LENAIN, J.-P.; LEUSCHNER, F.; LOHSE, T.; LUASHVILI, A.; LYPOVA, I.; MACKEY, J.; MALYSHEV, D.; MARANDON, V.; MARCHEGIANI, P.; MARCOWITH, A.; MARTÍ-DEVESA, G.; MARX, R.; MAURIN, G.; MEYER, M.; MITCHELL, A.; MODERSKI, R.; MOHRMANN, L.; MONTANARI, A.; MOULIN, E.; MULLER, J.; MURACH, T.; NAKASHIMA, K.; DE NAUROIS, M.; NAYERHODA, A.; NIEMIEC, J.; NOEL, A. Priyana; O'BRIEN, P.; OHM, S.; OLIVERA-NIETO, L.; WILHELMI, E. De Ona; OSTROWSKI, M.; PANNY, S.; PANTER, M.; PARSONS, R.D.; PERON, G.; PITA, S.; POIREAU, V.; PROKHOROV, D.A.; PROKOPH, H.; PÜHLHOFER, G.; PUNCH, M.; QUIRRENBACH, A.; REICHHERZER, P.; REIMER, A.; REIMER, O.; RENAUD, M.; REVILLE, B.; RIEGER, F.; ROWELL, G.; RUDAK, B.; RICARTE, H. Rueda; RUIZ-VELASCO, E.; SAHAKIAN, V.; SAILER, S.; SALZMANN, H.; SANCHEZ, D.A.; SANTANGELO, A.; SASAKI, M.; SCHÄFER, J.; SCHÜSSLER, F.; SCHUTTE, H.M.; SCHWANKE, U.; SENNIAPPAN, M.; SHAPOPI, J.N.S.; SIMONI, R.; SINHA, A.; SOL, H.; SPECOVIUS, A.; SPENCER, S.; STAWARZ, Ł.; STEINMASSL, S.; STEPPA, C.; TAKAHASHI, T.; TANAKA, T.; TAYLOR, A.M.; TERRIER, R.; THORPE-MORGAN, C.; TSIROU, M.; TSUJI, N.; TUFFS, R.; UCHIYAMA, Y.; UNBEHAUN, T.; VAN ELDIK, C.; VAN SOELEN, B.; VEH, J.; VENTER, C.; VINK, J.; WAGNER, S.J.; WERNER, F.; WHITE, R.; WIERZCHOLSKA, A.; WONG, Yu Wun; YUSAFZAI, A.; ZACHARIAS, M.; ZARGARYAN, D.; ZDZIARSKI, A.A.; ZECH, A.; ZHU, S.J.; ZOUARI, S.; ŻYWUCKA, N.

doi:10.1126/science.abn0567

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AHARONIAN, F.

BENKHALI, F. Ait

ANGÜNER, E.O.
Centre de Physique des Particules de Marseille [CPPM]

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Science. 2022, vol. 376, n° 6588, p. abn0567

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Recurrent novae are repeating thermonuclear explosions in the outer layers of white dwarfs, due to the accretion of fresh material from a binary companion. The shock generated when ejected material slams into the companion star’s wind can accelerate particles. We report very-high-energy (VHE; ≳100 giga–electron volts≳100 giga–electron volts) gamma rays from the recurrent nova RS Ophiuchi, up to 1 month after its 2021 outburst, observed using the High Energy Stereoscopic System (H.E.S.S.). The temporal profile of VHE emission is similar to that of lower-energy giga–electron volt emission, indicating a common origin, with a 2-day delay in peak flux. These observations constrain models of time-dependent particle energization, favoring a hadronic emission scenario over the leptonic alternative. Shocks in dense winds provide favorable environments for efficient acceleration of cosmic rays to very high energies.Read less <

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Time-resolved hadronic particle acceleration in the recurrent nova RS Ophiuchi

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