发现船帆脉冲星延伸至 20 兆电子伏特的辐射成分
高能天体物理现象
2023-10-11 v1
摘要
伽马射线观测已确立高能孤立脉冲星为银河系中杰出的粒子加速器与反物质工厂。然而，关于起作用的加速机制与辐射过程、以及这些过程发生的位置，尚无共识。迄今所有观测到的伽马射线脉冲星能谱在数吉电子伏（GeV）以上能量均呈现强截断或拐折。利用 H.E.S.S. 切伦科夫望远镜阵列，我们发现了船帆脉冲星宽带能谱中超越该通用 GeV 截断而涌现的新辐射成分。伽马射线脉冲能量延伸至至少 20 兆电子伏（TeV），表明船帆脉冲星可将粒子加速至高于 的洛伦兹因子。这比另一颗在 TeV 能段被探测到的脉冲星——蟹状脉冲星的情况大一个数量级。我们的结果挑战了脉冲星高能发射的最先进模型，同时提供了一种新探针，即高能多 TeV 成分，用于约束其极端能量极限下的加速与发射过程。
引用
@article{arxiv.2310.06181,
title = {Discovery of a Radiation Component from the Vela Pulsar Reaching 20 Teraelectronvolts},
author = {The H. E. S. S. Collaboration and : and F. Aharonian and F. Ait Benkhali and J. Aschersleben and H. Ashkar and M. Backes and V. Barbosa Martins and R. Batzofin and Y. Becherini and D. Berge and K. Bernlöhr and B. Bi and M. Böttcher and C. Boisson and J. Bolmont and M. de Bony de Lavergne and J. Borowska and F. Bradascio and M. Breuhaus and R. Brose and F. Brun and B. Bruno and T. Bulik and C. Burger-Scheidlin and T. Bylund and F. Cangemi and S. Caroff and S. Casanova and J. Celic and M. Cerruti and T. Chand and S. Chandra and A. Chen and O. Chibueze and G. Cotter and J. Damascene Mbarubucyeye and A. Djannati-Ataï and A. Dmytriiev and K. Egberts and J. -P. Ernenwein and K. Feijen and A. Fiasson and G. Fichet de Clairfontaine and G. Fontaine and M. Füßling and S. Funk and S. Gabici and Y. A. Gallant and S. Ghafourizadeh and G. Giavitto and L. Giunti and D. Glawion and J. F. Glicenstein and P. Goswami and G. Grolleron and M. -H. Grondin and L. Haerer and M. Haupt and J. A. Hinton and W. Hofmann and T. L. Holch and M. Holler and D. Horns and Zhiqiu Huang and M. Jamrozy and F. Jankowsky and V. Joshi and I. Jung-Richardt and E. Kasai and K. Katarzyński and B. Khélifi and S. Klepser and W. Kluźniak and Nu. Komin and K. Kosack and D. Kostunin and R. G. Lang and S. Le Stum and A. Lemière and M. Lemoine-Goumard and J. -P. Lenain and F. Leuschner and T. Lohse and A. Luashvili and I. Lypova and J. Mackey and D. Malyshev and D. Malyshev and V. Marandon and P. Marchegiani and A. Marcowith and P. Marinos and G. Martí-Devesa and R. Marx and G. Maurin and M. Meyer and A. Mitchell and R. Moderski and L. Mohrmann and A. Montanari and E. Moulin and J. Muller and T. Murach and K. Nakashima and M. de Naurois and J. Niemiec and A. Priyana Noel and P. OBrien and S. Ohm and L. Olivera-Nieto and E. de Ona Wilhelmi and M. Ostrowski and S. Panny and M. Panter and R. D. Parsons and G. Peron and S. Pita and D. A. Prokhorov and H. Prokoph and G. Pühlhofer and M. Punch and A. Quirrenbach and P. Reichherzer and A. Reimer and O. Reimer and M. Renaud and F. Rieger and G. Rowell and B. Rudak and E. Ruiz-Velasco and V. Sahakian and S. Sailer and H. Salzmann and D. A. Sanchez and A. Santangelo and M. Sasaki and F. Schüssler and U. Schwanke and J. N. S. Shapopi and A. Sinha and H. Sol and A. Specovius and S. Spencer and M. Spir-Jacob and L. Stawarz and R. Steenkamp and S. Steinmassl and C. Steppa and I. Sushch and H. Suzuki and T. Takahashi and T. Tanaka and T. Tavernier and R. Terrier and C. Thorpe-Morgan and M. Tluczykont and M. Tsirou and N. Tsuji and C. van Eldik and M. Vecchi and J. Veh and C. Venter and J. Vink and S. J. Wagner and F. Werner and R. White and A. Wierzcholska and Yu Wun Wong and H. Yassin and M. Zacharias and D. Zargaryan and A. A. Zdziarski and A. Zech and S. J. Zhu and S. Zouari and N. Żywucka and R. Zanin and M. Kerr and S. Johnston and R. M. Shannon and D. A. Smith},
journal= {arXiv preprint arXiv:2310.06181},
year = {2023}
}
备注
38 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