脉冲星风星云 HESS J1825-137 内的粒子输运
高能天体物理现象
2019-01-16 v2
摘要
目的：我们给出脉冲星风星云（PWN）HESS J1825-137 的详细图像。我们旨在约束主导该星云内粒子输运的机制，并解释其异常大的尺度与能谱特征。方法：利用 H.E.S.S. I 超过 12 年的深曝光观测，以及提升低能灵敏度的 H.E.S.S. II 数据研究该星云。增强的能依赖形态学与空间分辨能谱分析探测了该星云的甚高能（VHE，E > 0.1 TeV）伽马射线性质。结果：揭示星云辐射从脉冲星向外延伸达 1.5 度，比先前所见远约 1.5 倍，使得本征直径约 100 pc 的 HESS J1825-137 成为目前已知潜在最大的伽马射线脉冲星风星云。对星云强能依赖形态学的表征使得粒子输运机制得以约束。星云尺度随能量的依赖关系 R E^\alpha，其中 \alpha = -0.29 ± 0.04（统计）± 0.05（系统），不利于星云内粒子输运的纯扩散情景。发现星云在 1~TeV 以上的总伽马射线通量为 (1.12 ± 0.03（统计）± 0.25（系统）) cm s，约对应蟹状星云通量的 64%。结论：HESS J1825-137 是一个在甚高能伽马射线能量下具有清晰能依赖形态学的脉冲星风星云。该源被用作研究中年脉冲星风星云内粒子输运的实验室。对该高度空间延展星云的深观测使得能够制作该区域的能谱图，从而提供对星云内能谱变化的见解。
引用
@article{arxiv.1810.12676,
title = {Particle Transport within the Pulsar Wind Nebula HESS J1825-137},
author = {H. E. S. S. Collaboration and H. Abdalla and F. Aharonian and F. Ait Benkhali and E. O. Angüner and M. Arakawa and C. Arcaro and C. Armand and M. Arrieta and M. Backes and M. Barnard and Y. Becherini and J. Becker Tjus and D. Berge and K. Bernlöhr and R. Blackwell and M. Böttcher and C. Boisson and J. Bolmont and S. Bonnefoy and P. Bordas and J. Bregeon and F. Brun and P. Brun and M. Bryan and M. Büchele and T. Bulik and T. Bylund and M. Capasso and S. Caroff and A. Carosi and S. Casanova and M. Cerruti and N. Chakraborty and T. Chand and S. Chandra and R. C. G. Chaves and A. Chen and S. Colafrancesco and B. Condon and I. D. Davids and C. Deil and J. Devin and P. deWilt and L. Dirson and A. Djannati-Ataï and A. Dmytriiev and A. Donath and V. Doroshenko and L. O'C. Drury and J. Dyks and K. Egberts and G. Emery and J. -P. Ernenwein and S. Eschbach and S. Fegan and A. Fiasson and G. Fontaine and S. Funk and M. Füßling and S. Gabici and Y. A. Gallant and F. Gaté and G. Giavitto and D. Glawion and J. F. Glicenstein and D. Gottschall and M. -H. Grondin and J. Hahn and M. Haupt and G. Heinzelmann and G. Henri and G. Hermann and J. A. Hinton and W. Hofmann and C. Hoischen and T. L. Holch and M. Holler and D. Horns and D. Huber and H. Iwasaki and A. Jacholkowska and M. Jamrozy and D. Jankowsky and F. Jankowsky and L. Jouvin and I. Jung-Richardt and M. A. Kastendieck and K. Katarzyński and M. Katsuragawa and U. Katz and D. Kerszberg and D. Khangulyan and B. Khélifi and J. King and S. Klepser and W. Kluźniak and Nu. Komin and K. Kosack and M. Kraus and G. Lamanna and J. Lau and J. Lefaucheur and A. Lemière and M. Lemoine-Goumard and J. -P. Lenain and E. Leser and T. Lohse and R. López-Coto and I. Lypova and D. Malyshev and V. Marandon and A. Marcowith and C. Mariaud and G. Martí-Devesa and R. Marx and G. Maurin and P. J. Meintjes and A. M. W. Mitchell and R. Moderski and M. Mohamed and L. Mohrmann and C. Moore and E. Moulin and T. Murach and S. Nakashima and M. de Naurois and H. Ndiyavala and F. Niederwanger and J. Niemiec and L. Oakes and P. O'Brien and H. Odaka and S. Ohm and M. Ostrowski and I. Oya and M. Panter and R. D. Parsons and C. Perennes and P. -O. Petrucci and B. Peyaud and Q. Piel and S. Pita and V. Poireau and A. Priyana Noel and D. A. Prokhorov and H. Prokoph and G. Pühlhofer and M. Punch and A. Quirrenbach and S. Raab and R. Rauth and A. Reimer and O. Reimer and M. Renaud and F. Rieger and L. Rinchiuso and C. Romoli and G. Rowell and B. Rudak and E. Ruiz-Velasco and V. Sahakian and S. Saito and D. A. Sanchez and A. Santangelo and M. Sasaki and R. Schlickeiser and F. Schüssler and A. Schulz and H. Schutte and U. Schwanke and S. Schwemmer and M. Seglar-Arroyo and M. Senniappan and A. S. Seyffert and N. Shafi and I. Shilon and K. Shiningayamwe and R. Simoni and A. Sinha and H. Sol and A. Specovius and M. Spir-Jacob and Ł. Stawarz and R. Steenkamp and C. Stegmann and C. Steppa and T. Takahashi and J. -P. Tavernet and T. Tavernier and A. M. Taylor and R. Terrier and L. Tibaldo and D. Tiziani and M. Tluczykont and C. Trichard and M. Tsirou and N. Tsuji and R. Tuffs and Y. Uchiyama and D. J. van der Walt and C. van Eldik and C. van Rensburg and B. van Soelen and G. Vasileiadis and J. Veh and C. Venter and P. Vincent and J. Vink and F. Voisin and H. J. Völk and T. Vuillaume and Z. Wadiasingh and S. J. Wagner and R. M. Wagner and R. White and A. Wierzcholska and R. Yang and H. Yoneda and D. Zaborov and M. Zacharias and R. Zanin and A. A. Zdziarski and A. Zech and F. Zefi and A. Ziegler and J. Zorn and N. Zywucka},
journal= {arXiv preprint arXiv:1810.12676},
year = {2019}
}
备注
20 pages, 10 figures, 5 tables, accepted for publication by Astronomy and Astrophysics