학술논문
Time-resolved hadronic particle acceleration in the recurrent Nova RS Ophiuchi
Document Type
Working Paper
Author
Collaboration, H. E. S. S.; 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 Lavergne, M. de Bony; 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.
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Subject
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Abstract
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 by ejected material slamming into the companion star's wind, accelerates particles to very-high-energies. We report very-high-energy (VHE, $\gtrsim100$\,GeV) gamma rays from the recurrent nova RS\,Ophiuchi up to a month after its 2021 outburst, using the High Energy Stereoscopic System. The VHE emission has a similar temporal profile to lower-energy GeV emission, indicating a common origin, with a two-day delay in peak flux. These observations constrain models of time-dependent particle energization, favouring a hadronic emission scenario over the leptonic alternative. This confirms that shocks in dense winds provide favourable environments for efficient cosmic-ray acceleration to very-high-energies.
Comment: Submitted 1st Nov. 2021, first release 10th March 2022 (accepted version)
Comment: Submitted 1st Nov. 2021, first release 10th March 2022 (accepted version)