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000596656 088__ $$2arXiv$$aarXiv:2310.06181
000596656 1001_ $$aAharonian, F.$$b0
000596656 245__ $$aDiscovery of a Radiation Component from the Vela Pulsar Reaching 20 Teraelectronvolts
000596656 260__ $$aLondon$$bNature Publishing Group$$c2023
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000596656 500__ $$a38 pages, 6 figures. This preprint has not undergone peer review or any post-submission improvements or corrections. The Version of Record of this article is published in Nature Astronomy, Nat Astron (2023), and is available online at https://doi.org/10.1038/s41550-023-02052-3  Waiting for fulltext
000596656 520__ $$aGamma-ray observations have established energetic isolated pulsars as outstanding particle accelerators and antimatter factories in the Galaxy. There is, however, no consensus regarding the acceleration mechanisms and the radiative processes at play, nor the locations where these take place. The spectra of all observed gamma-ray pulsars to date show strong cutoffs or a break above energies of a few gigaelectronvolt (GeV). Using the H.E.S.S. array of Cherenkov telescopes, we discovered a novel radiation component emerging beyond this generic GeV cutoff in the Vela pulsar's broadband spectrum. The extension of gamma-ray pulsation energies up to at least 20 teraelectronvolts (TeV) shows that Vela pulsar can accelerate particles to Lorentz factors higher than $4\times10^7$. This is an order of magnitude larger than in the case of the Crab pulsar, the only other pulsar detected in the TeV energy range. Our results challenge the state-of-the-art models for high-energy emission of pulsars while providing a new probe, i.e. the energetic multi-TeV component, for constraining the acceleration and emission processes in their extreme energy limit.
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000596656 650_7 $$2INSPIRE$$apulsar, emission
000596656 650_7 $$2INSPIRE$$aantimatter, particle source
000596656 650_7 $$2INSPIRE$$agamma ray
000596656 650_7 $$2INSPIRE$$aacceleration
000596656 650_7 $$2INSPIRE$$aGeV
000596656 650_7 $$2INSPIRE$$aTeV
000596656 650_7 $$2INSPIRE$$aaccelerator
000596656 650_7 $$2INSPIRE$$aCherenkov counter
000596656 650_7 $$2INSPIRE$$aLorentz
000596656 650_7 $$2INSPIRE$$agalaxy
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000596656 7001_ $$aAit Benkhali, F.$$b1
000596656 7001_ $$aAschersleben, J.$$b2
000596656 7001_ $$aAshkar, H.$$b3
000596656 7001_ $$aBackes, M.$$b4
000596656 7001_ $$0P:(DE-H253)PIP1085491$$aBarbosa Martins, V.$$b5
000596656 7001_ $$aBatzofin, R.$$b6
000596656 7001_ $$aBecherini, Y.$$b7
000596656 7001_ $$0P:(DE-H253)PIP1080570$$aBerge, D.$$b8
000596656 7001_ $$aBernlöhr, K.$$b9
000596656 7001_ $$aBi, B.$$b10
000596656 7001_ $$aBöttcher, M.$$b11
000596656 7001_ $$aBoisson, C.$$b12
000596656 7001_ $$aBolmont, J.$$b13
000596656 7001_ $$ade Bony de Lavergne, M.$$b14
000596656 7001_ $$aBorowska, J.$$b15
000596656 7001_ $$aBradascio, F.$$b16
000596656 7001_ $$aBreuhaus, M.$$b17
000596656 7001_ $$aBrose, R.$$b18
000596656 7001_ $$aBrun, F.$$b19
000596656 7001_ $$aBruno, B.$$b20
000596656 7001_ $$aBulik, T.$$b21
000596656 7001_ $$aBurger-Scheidlin, C.$$b22
000596656 7001_ $$aBylund, T.$$b23
000596656 7001_ $$aCangemi, F.$$b24
000596656 7001_ $$aCaroff, S.$$b25
000596656 7001_ $$aCasanova, S.$$b26
000596656 7001_ $$aCelic, J.$$b27
000596656 7001_ $$aCerruti, M.$$b28
000596656 7001_ $$aChand, T.$$b29
000596656 7001_ $$aChandra, S.$$b30
000596656 7001_ $$aChen, A.$$b31
000596656 7001_ $$aChibueze, O.$$b32
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000596656 7001_ $$0P:(DE-HGF)0$$aDamascene Mbarubucyeye, J.$$b34
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000596656 7001_ $$aDmytriiev, A.$$b36
000596656 7001_ $$aEgberts, K.$$b37
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000596656 7001_ $$aHuang, Zhiqiu$$b62
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000596656 7001_ $$aLe Stum, S.$$b76
000596656 7001_ $$aLemière, A.$$b77
000596656 7001_ $$aLemoine-Goumard, M.$$b78
000596656 7001_ $$aLenain, J.-P.$$b79
000596656 7001_ $$aLeuschner, F.$$b80
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000596656 7001_ $$aLuashvili, A.$$b82
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000596656 7001_ $$aMalyshev, D.$$b85
000596656 7001_ $$aMalyshev, D.$$b86
000596656 7001_ $$aMarandon, V.$$b87
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000596656 7001_ $$aMartí-Devesa, G.$$b91
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000596656 7001_ $$0P:(DE-H253)PIP1085234$$ade Ona Wilhelmi, Emma Maria$$b109$$eCorresponding author
000596656 7001_ $$aOstrowski, M.$$b110
000596656 7001_ $$aPanny, S.$$b111
000596656 7001_ $$aPanter, M.$$b112
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000596656 7001_ $$aRowell, G.$$b126
000596656 7001_ $$0P:(DE-HGF)0$$aRudak, B.$$b127$$eCorresponding author
000596656 7001_ $$aRuiz-Velasco, E.$$b128
000596656 7001_ $$aSahakian, V.$$b129
000596656 7001_ $$aSailer, S.$$b130
000596656 7001_ $$aSalzmann, H.$$b131
000596656 7001_ $$aSanchez, D. A.$$b132
000596656 7001_ $$aSantangelo, A.$$b133
000596656 7001_ $$aSasaki, M.$$b134
000596656 7001_ $$aSchüssler, F.$$b135
000596656 7001_ $$aSchwanke, U.$$b136
000596656 7001_ $$aShapopi, J. N. S.$$b137
000596656 7001_ $$aSinha, A.$$b138
000596656 7001_ $$aSol, H.$$b139
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000596656 7001_ $$aSushch, I.$$b147
000596656 7001_ $$aSuzuki, H.$$b148
000596656 7001_ $$aTakahashi, T.$$b149
000596656 7001_ $$aTanaka, T.$$b150
000596656 7001_ $$aTavernier, T.$$b151
000596656 7001_ $$aTerrier, R.$$b152
000596656 7001_ $$aThorpe-Morgan, C.$$b153
000596656 7001_ $$aTluczykont, M.$$b154
000596656 7001_ $$aTsirou, M.$$b155
000596656 7001_ $$aTsuji, N.$$b156
000596656 7001_ $$avan Eldik, C.$$b157
000596656 7001_ $$aVecchi, M.$$b158
000596656 7001_ $$aVeh, J.$$b159
000596656 7001_ $$0P:(DE-HGF)0$$aVenter, C.$$b160$$eCorresponding author
000596656 7001_ $$aVink, J.$$b161
000596656 7001_ $$aWagner, S. J.$$b162
000596656 7001_ $$aWerner, F.$$b163
000596656 7001_ $$aWhite, R.$$b164
000596656 7001_ $$aWierzcholska, A.$$b165
000596656 7001_ $$aWong, Yu Wun$$b166
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000596656 7001_ $$aShannon, R. M.$$b178
000596656 7001_ $$aSmith, D. A.$$b179
000596656 7001_ $$0P:(DE-HGF)0$$aH. E. S. S. Collaboration$$b180$$eCollaboration author
000596656 773__ $$0PERI:(DE-600)2879712-7$$a10.1038/s41550-023-02052-3$$gVol. 7, no. 11, p. 1341 - 1350$$n11$$p1341 - 1350$$tNature astronomy$$v7$$x2397-3366$$y2023
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