H.E.S.S. 对 PSR J0855-4644 中星云的探测
摘要
HESS J0852-463 是位于银河平面上的一个 TeV 级 γ 射线源。该区域由超新星遗骸 (SNR, RX J0852.0-4622)，常称为 Vela Junior，且一个脉冲星 PSR J0855-4644 组成。脉冲星是我们银河系中最有效的 leptonic 加速器，因此该区域极具研究价值。我们利用 H.E.S.S. 最新收集的数据，探讨该区域内与脉冲星相关的 γ 射线辐射。我们对 H.E.S.S. 数据应用了全向投影方法。利用 3D 建模技术，我们评估了向该复杂系统各个组成部分的 TeV γ 射线辐射。我们在数据中观察到的明显能量依赖性形貌激发了对该源进一步的调查。我们将 Vela Junior 区域的辐射分解为多个组成部分，其中一些对应于 SNR 本身。特别地，我们发现一个新的扩展成分，位于 PSR J0855-4644 的位置。其光谱遵循幂律分布，最佳拟合指数为 ΓE = 1.81 ± 0.07stat，与 Vela Junior SNR 周围 γ 射线辐射的特性不同。一种以 X 射线 (来自 XMM-Newton) 和 γ 射线 (来自 H.E.S.S.) 为依据的单区 lepto 型联合拟合，给出了磁场为 1.6μG 的下限，光谱指数为 α = 1.88 ± 0.01，与脉冲风暴星云 (PWN) 的预期相符。在本文中，我们报告了 H.E.S.S. 实验首次在 12.2σ 显著性下检测到 PSR J0855-4644 的 PWN。这种检测归功于 3D 分析的先进技术。基于脉冲星的特征，其 PWN 与已知银河系中 TeV PWN 群体的特性一致。
引用
@article{arxiv.2602.14640,
title = {H.E.S.S. detection of the PSR J0855-4644 nebula},
author = {F. Aharonian and H. Ashkar and M. Backes and R. Batzofin and Y. Becherini and D. Berge and K. Bernlöhr and M. Böttcher and C. Boisson and J. Bolmont and F. Brun and B. Bruno and C. Burger-Scheidlin and T. Bylund and S. Casanova and D. Cecchin Momesso and J. Celic and M. Cerruti and A. Chen and M. Chernyakova and J. O. Chibueze and O. Chibueze and B. Cornejo and G. Cotter and G. Cozzolongo and J. de Assis Scarpin and M. de Bony de Lavergne and M. de Naurois and E. de Oña Wilhelmi and A. G. Delgado Giler and J. Devin and A. Dmytriiev and K. Egberts and K. Egg and J. -P. Ernenwein and C. Escañuela Nieves and P. Fauverge and K. Feijen and M. D. Filipovic and G. Fontaine and S. Funk and S. Gabici and Y. A. Gallant and M. Genaro and J. F. Glicenstein and J. Glombitza and P. Goswami and M. -H. Grondin and L. Heckmann and B. Heß and W. Hofmann and T. L. Holch and M. Holler and D. Horns and M. Jamrozy and F. Jankowsky and A. Jardin-Blicq and I. Jaroschewski and D. Jimeno and I. Jung-Richardt and E. Kasai and K. Katarzyński and D. Kerszberg and B. Khélifi and W. Kluźniak and N. Komin and K. Kosack and D. Kostunin and R. G. Lang and S. Lazarević and A. Lemière and M. Lemoine-Goumard and J. -P. Lenain and P. Liniewicz and A. Luashvili and J. Mackey and D. Malyshev and D. Malyshev and V. Marandon and M. G. F. Mayer and A. Mehta and A. M. W. Mitchell and R. Moderski and L. Mohrmann and E. Moulin and J. Niemiec and P. O'Brien and L. Olivera-Nieto and M. O. Moghadam and S. Panny and M. Panter and R. D. Parsons and P. Pichard and T. Preis and G. Pühlhofer and M. Punch and A. Quirrenbach and A. Reimer and O. Reimer and I. Reis and Q. Remy and H. X. Ren and B. Reville and F. Rieger and G. Rowell and B. Rudak and K. Sabri and V. Sahakian and M. Sasaki and F. Schüssler and J. N. S. Shapopi and W. Si Said and Ł. Stawarz and R. Steenkamp and S. Steinmassl and T. Tanaka and A. M. Taylor and G. L. Taylor and R. Terrier and Y. Tian and M. Tsirou and T. Unbehaunz and C. van Eldik and M. Vecchi and C. Venter and J. Vink and V. Voitsekhovskyi and T. Wach and S. J. Wagner and A. Wierzcholska and M. Zacharias and A. Zech and W. Zhong and F. Acero and L. Giunti},
journal= {arXiv preprint arXiv:2602.14640},
year = {2026}
}
备注
10 pages, 7 figures. Accepted to A&A; Corresponding authors: K. Feijen, B. Kh\'elifi, R. Terrier, K. Kosack