YNAO OpenIR  > 中国科学院天体结构与演化重点实验室
Numerically modelling the Cygnus Loop as a remnant evolved in an anisotropic cavity
Fang, Jun1,2; Yu, Huan3,4; Zhang, Li1
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2017
Volume464Issue:1Pages:940-945
DOI10.1093/mnras/stw2473
Indexed BySCI
KeywordHydrodynamics Methods: Numerical Ism: Individual Objects: Cygnus Loop Ism: Supernova Remnants
Abstract

The morphology of the middle-aged supernova remnant, Cygnus Loop, seen in X-rays, is peculiar, with a blowout in the south region and other irregular features, such as a bump in the west, a limb with a planar morphology in the east and asymmetry between the east and the west shock profiles of the blowout. The detailed process of the formation of the peculiar profile of the shock is still unclear. We perform three-dimensional hydrodynamical simulations for the remnant to revisit its evolution. In the simulations, the progenitor ejects an anisotropic, latitude-dependent wind, and travels in a direction that is not aligned with the symmetry axis of the wind. As a result, a cavity with a fringed structure is produced. The remnant has evolved in the cavity for about 10(4) yr. In the north-east, the shock has first encountered the bow shock, and this part corresponds to the bright north-eastern region. The south blowout is formed due to the shock travelling into the undisturbed wind, and the interaction of the shock with the cavity leads to the other peculiar features of the shock structure. The resulting profile of the remnant is consistent with that indicated in X-rays. It can be concluded that the supernova explosion occurred in the cavity produced by an anisotropic stellar wind experiencing two main phases with different wind velocities.

Funding ProjectNational Natural Science Foundation of China (NSFC)[11563009] ; Open Research Programme of the Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[OP201402] ; Yunnan Applied Basic Research Projects[2016FB001] ; Yunnan Applied Basic Research Projects[2016FD105] ; Top Talents Programme of Yunnan Province, China[2015HA030] ; NSFC[11433004] ; IRTSTYN
Funding OrganizationNational Natural Science Foundation of China (NSFC)[11563009] ; Open Research Programme of the Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[OP201402] ; Yunnan Applied Basic Research Projects[2016FB001, 2016FD105] ; Top Talents Programme of Yunnan Province, China[2015HA030] ; NSFC[11433004] ; IRTSTYN
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000393646300071
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSUPERNOVA REMNANT ; X-RAY ; NONTHERMAL EMISSION ; ORIGIN ; SIMULATION ; EXPLOSION ; PLASMA ; PLUTO ; CODE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9922
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorFang, Jun; Yu, Huan; Zhang, Li
Affiliation1.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.Department of Physical Science and Technology, Kunming University, Kunming 650214, China
4.Key Laboratory of Yunnan Provincial Higher Education Institutions for Organic Optoelectronic Materials and Devices, Kunming University, Kunming 650214, China
Recommended Citation
GB/T 7714
Fang, Jun,Yu, Huan,Zhang, Li. Numerically modelling the Cygnus Loop as a remnant evolved in an anisotropic cavity[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,464(1):940-945.
APA Fang, Jun,Yu, Huan,&Zhang, Li.(2017).Numerically modelling the Cygnus Loop as a remnant evolved in an anisotropic cavity.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,464(1),940-945.
MLA Fang, Jun,et al."Numerically modelling the Cygnus Loop as a remnant evolved in an anisotropic cavity".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 464.1(2017):940-945.
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