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arXiv 2602.14640astro-ph.HE
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HESS 对 PSR J0855-4644 火山口的探测

H.E.S.S. detection of the PSR J0855-4644 nebula

F. Aharonian, H. Ashkar, M. Backes, R. Batzofin, Y. Becherini, D. Berge, K. Bernlöhr, M. Böttcher, C. Boisson, J. Bolmont, F. Brun, B. Bruno, C. Burger-Scheidli… 展开作者

F. Aharonian, H. Ashkar, M. Backes, R. Batzofin, Y. Becherini, D. Berge, K. Bernlöhr, M. Böttcher, C. Boisson, J. Bolmont, F. Brun, B. Bruno, C. Burger-Scheidlin, T. Bylund, S. Casanova, D. Cecchin Momesso, J. Celic, M. Cerruti, A. Chen, M. Chernyakova, J. O. Chibueze, O. Chibueze, B. Cornejo, G. Cotter, G. Cozzolongo, J. de Assis Scarpin, M. de Bony de Lavergne, M. de Naurois, E. de Oña Wilhelmi, A. G. Delgado Giler, J. Devin, A. Dmytriiev, K. Egberts, K. Egg, J. -P. Ernenwein, C. Escañuela Nieves, P. Fauverge, K. Feijen, M. D. Filipovic, G. Fontaine, S. Funk, S. Gabici, Y. A. Gallant, M. Genaro, J. F. Glicenstein, J. Glombitza, P. Goswami, M. -H. Grondin, L. Heckmann, B. Heß, W. Hofmann, T. L. Holch, M. Holler, D. Horns, M. Jamrozy, F. Jankowsky, A. Jardin-Blicq, I. Jaroschewski, D. Jimeno, I. Jung-Richardt, E. Kasai, K. Katarzyński, D. Kerszberg, B. Khélifi, W. Kluźniak, N. Komin, K. Kosack, D. Kostunin, R. G. Lang, S. Lazarević, A. Lemière, M. Lemoine-Goumard, J. -P. Lenain, P. Liniewicz, A. Luashvili, J. Mackey, D. Malyshev, D. Malyshev, V. Marandon, M. G. F. Mayer, A. Mehta, A. M. W. Mitchell, R. Moderski, L. Mohrmann, E. Moulin, J. Niemiec, P. O'Brien, L. Olivera-Nieto, M. O. Moghadam, S. Panny, M. Panter, R. D. Parsons, P. Pichard, T. Preis, G. Pühlhofer, M. Punch, A. Quirrenbach, A. Reimer, O. Reimer, I. Reis, Q. Remy, H. X. Ren, B. Reville, F. Rieger, G. Rowell, B. Rudak, K. Sabri, V. Sahakian, M. Sasaki, F. Schüssler, J. N. S. Shapopi, W. Si Said, Ł. Stawarz, R. Steenkamp, S. Steinmassl, T. Tanaka, A. M. Taylor, G. L. Taylor, R. Terrier, Y. Tian, M. Tsirou, T. Unbehaunz, C. van Eldik, M. Vecchi, C. Venter, J. Vink, V. Voitsekhovskyi, T. Wach, S. J. Wagner, A. Wierzcholska, M. Zacharias, A. Zech, W. Zhong, F. Acero, L. Giunti

AI总结:

HESS 首次在 TeV 能量范围内探测到 PSR J0855-4644 的脉冲星风云,利用 3D 分析技术,发现其光谱特征与脉冲星风云一致。

摘要:

HESS J0852-463 是一个 TeV γ射线源,位于银河系平面内。该区域由一个壳状的超新星残骸(SNR,RX J0852.0-4622)组成,通常称为 Vela Junior,以及一个称为 PSR J0855-4644 的脉冲星组成。脉冲星是银河系中最高效的轻子加速器之一,因此研究该区域特别有意义。我们利用 H.E.S.S. 最新的数据,研究该区域中脉冲星 PSR J0855-4644 的 γ射线发射。我们对 H.E.S.S. 数据应用了完整的前向折叠方法。利用 3D 模型技术,我们评估了该复杂系统各个组成部分的 TeV γ射线发射。我们数据中观察到的具有能量依赖性的形态促使进一步研究该源。我们将 Vela Junior 区域的发射分解为多个组成部分,其中一些对应于 SNR 本身。特别是,我们发现一个新的扩展组成部分,其位置与 PSR J0855-4644 的位置重合。光谱遵循幂律分布,最佳拟合指数为 ΓE = 1.81 ± 0.07stat,与 Vela Junior SNR 周围的 γ射线发射特性不同。X射线(来自 XMM-Newton)和 γ射线(来自 H.E.S.S.)之间的单区轻子联合拟合得出磁场的下限为 1.6μG,光谱指数为 α = 1.88 ± 0.01,与脉冲星风云(PWNe)的预期一致。在本文中,我们报告了 H.E.S.S. 实验在 TeV 能量范围内首次探测到 PSR J0855-4644 的 PWN,显著性为 12.2σ。这归因于 3D 分析的先进技术。基于脉冲星的特性,其 PWN 与银河系中已知的 TeV PWNe 群体一致。

英文摘要:

HESS J0852-463 is a TeV γ-ray source located in the Galactic plane. The region consists of a supernova remnant (SNR, RX J0852.0-4622) with a shell-like morphology, commonly referred to as Vela Junior, and a pulsar denoted PSR J0855-4644. Pulsars are among the most efficient leptonic accelerators in our Galaxy, making this region particularly interesting to study. We utilise the most recent data taken by the High Energy Stereoscopic System (H.E.S.S.), to investigate any γ-ray emission associated with the pulsar in this region, PSR J0855-4644. We applied a full forward folding method on the H.E.S.S. data. Utilising 3D modelling techniques, we evaluated the TeV γ-ray emission towards the various components of this complex system. The distinct energy-dependent morphology observed in our data motivates further investigation of this source. We resolved the emission in the Vela Junior region into various components, several of which correspond to the SNR itself. In particular, we find a new extended component which is coincident with the position of PSR J0855-4644. The spectrum follows a power-law distribution with a best-fit index of ΓE = 1.81 \pm 0.07stat which differs from the properties of the surrounding γ-ray emission of the Vela Junior SNR. A one-zone leptonic joint fit between the X-rays (from XMM-Newton) and γ-rays (from H.E.S.S.) leads to a lower limit on the magnetic field of 1.6μG and a spectral index of α = 1.88 \pm 0.01, in line with expectations of pulsar wind nebulae (PWNe). In this paper, we report the first detection of the PWN of PSR J0855-4644 at TeV energies with the H.E.S.S. experiment at a significance of 12.2σ. This is attributed to the advanced techniques of the 3D analysis. Based on the pulsar's characteristics, its PWN is consistent with the known TeV PWNe population in the Galaxy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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