Proton acceleration in thermonuclear nova explosions revealed by gamma rays

Journal
Date Issued
2022
Author(s)
Acciari, V. A.
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Ansoldi, S.
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Arbet Engels, A.
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Artero, M.
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Asano, K.
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Baack, D.
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Babić, A.
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Baquero, A.
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Barres de Almeida, U.
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Barrio, J. A.
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Terzić, T.
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Teshima, M.
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Tosti, L.
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Truzzi, S.
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Ubach, S.
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van Scherpenberg, J.
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Vanzo, G.
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Vazquez Acosta, M.
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Bhattacharyya, W.
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López-Coto, R.
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Ventura, S.
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Verguilov, V.
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Vigorito, C. F.
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Vitale, V.
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Vovk, I.
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Will, M.
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Wunderlich, C.
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Yamamoto, T.
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Zarić, D.
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López-Moya, M.
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Cecconi, M.
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•
Ferrara, C.
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•
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Giustolisi, L.
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•
•
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López-Oramas, A.
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Valisa, P.
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Biland, A.
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Blanch, O.
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Bökenkamp, H.
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Bošnjak, Ž.
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Busetto, G.
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Carosi, R.
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Ceribella, G.
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Cerruti, M.
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Loporchio, S.
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Chai, Y.
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Chilingarian, A.
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Cikota, S.
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Colak, S. M.
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Colombo, E.
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Contreras, J. L.
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Cortina, J.
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D'Amico, G.
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D'Elia, V.
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Machado de Oliveira Fraga, B.
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Da Vela, P.
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De Angelis, A.
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De Lotto, B.
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Del Popolo, A.
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Delfino, M.
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Delgado, J.
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Delgado Mendez, C.
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Depaoli, D.
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Di Pierro, F.
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Maggio, C.
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Di Venere, L.
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Do Souto Espiñeira, E.
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Prester, D. Dominis
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Donini, A.
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Dorner, D.
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Doro, M.
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Elsaesser, D.
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Fallah Ramazani, V.
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Fariña Alonso, L.
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Fattorini, A.
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Majumdar, P.
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Fonseca, M. V.
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Font, L.
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Fruck, C.
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Fukami, S.
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Fukazawa, Y.
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García López, R. J.
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Garczarczyk, M.
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Gasparyan, S.
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Gaug, M.
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Giglietto, N.
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Makariev, M.
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Giordano, F.
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Gliwny, P.
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Godinović, N.
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Green, D.
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Hadasch, D.
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Hahn, A.
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Hassan, T.
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Heckmann, L.
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Herrera, J.
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Mallamaci, M.
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Hoang, J.
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Hrupec, D.
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Hütten, M.
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Inada, T.
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Ishio, K.
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Iwamura, Y.
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Jiménez Martínez, I.
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Jormanainen, J.
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Jouvin, L.
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Kerszberg, D.
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Maneva, G.
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Kobayashi, Y.
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Kubo, H.
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Kushida, J.
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Lelas, D.
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Lindfors, E.
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Linhoff, L.
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Longo, F.
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Batković, I.
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Manganaro, M.
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Mannheim, K.
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Maraschi, L.
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Mariotti, M.
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Martínez, M.
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Mas Aguilar, A.
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Mazin, D.
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Menchiari, S.
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Mender, S.
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Mićanović, S.
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Becerra González, J.
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Miceli, D.
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Miener, T.
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Miranda, J. M.
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Mirzoyan, R.
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Molina, E.
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Moralejo, A.
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Morcuende, D.
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Moreno, V.
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Moretti, E.
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Nakamori, T.
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Bednarek, W.
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Neustroev, V.
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Nievas Rosillo, M.
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Nigro, C.
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Nilsson, K.
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Nishijima, K.
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Noda, K.
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Nozaki, S.
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Ohtani, Y.
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Oka, T.
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Bellizzi, L.
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Otero-Santos, J.
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Palatiello, M.
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Paneque, D.
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Paoletti, R.
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Paredes, J. M.
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Pavletić, L.
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Peñil, P.
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Pihet, M.
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Bernardini, E.
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Prada Moroni, P. G.
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Priyadarshi, C.
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Puljak, I.
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Rhode, W.
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Ribó, M.
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Rico, J.
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Rugliancich, A.
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Sahakyan, N.
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Bernardos, M.
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Saito, T.
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Sakurai, S.
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Satalecka, K.
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Schleicher, B.
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Schmidt, K.
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Schweizer, T.
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Sitarek, J.
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Šnidarić, I.
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Sobczynska, D.
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Berti, A.
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Spolon, A.
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Strišković, J.
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Strom, D.
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Strzys, M.
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Suda, Y.
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Surić, T.
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Takahashi, M.
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Takeishi, R.
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Besenrieder, J.
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Temnikov, P.
DOI
Abstract
Classical novae are cataclysmic binary star systems in which the matter of a companion star is accreted on a white dwarf1,2. Accumulation of hydrogen in a layer eventually causes a thermonuclear explosion on the surface of the white dwarf3, brightening the white dwarf to ~105 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.
Volume
6
Issue
6
Start page
689
Uri
Url
Issn Identifier
2397-3366
Ads BibCode
2022NatAs...6..689A
Rights
open.access
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