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Magnetic Fields in Giant Filaments Probed by the Velocity Gradient Technique: Regular Magnetic Field Interrupted by Magnetization Gaps

文献类型：期刊论文

作者Zhao, Mengke2,3; Li, Guang-Xing1; Zhou, Jianjun3,4,6; Tang, Xindi2,3,4,6; Esimbek, Jarken3,4,6; He, Yuxin2,3,4,6; Li, Dalei2,3,4,6; Ji, Weiguang3; Chang, Zhengxue5; Tursun, Kadirya3
刊名ASTROPHYSICAL JOURNAL
出版日期2024
卷号961期号:1页码:124
ISSN号0004-637X
DOI10.3847/1538-4357/ad09df
产权排序1
英文摘要We study the magnetic field structures in six giant filaments associated with the spiral arms of the Milky Way by applying the velocity gradient technique (VGT) to the 13CO spectroscopic data from the GRS, FUGIN, and SEDIGSM surveys. Unlike dust-polarized emission, the VGT allows us to separate the foreground and background using the velocity information, from which the orientation of the magnetic field can be reliably determined. We find that in most cases the magnetic fields stay aligned with the filament bodies, which are parallel to the disk midplane. Among these, G29, G47, and G51 exhibit smooth magnetic fields, and G24, G339, and G349 exhibit discontinuities. The fact that most filaments have magnetic fields that stay aligned with the Galactic disk midplane suggests that Galactic shear may be responsible for shaping the filaments. The fact that the magnetic field can stay regular at the resolution of our analysis (less than or similar to 10 pc), where the turbulence crossing time is short compared to the shear time, suggests that turbulent motion cannot effectively disrupt the regular orientation of the magnetic field. The discontinuities found in some filaments can be caused by processes including filament reassembly, gravitational collapse, and stellar feedback.
WOS关键词GRAVITATIONAL COLLAPSE ; GALACTIC PLANE ; INTERSTELLAR-MEDIUM ; MOLECULAR CLOUDS ; STAR-FORMATION ; TURBULENCE ; GALAXY ; SIMULATIONS ; KINEMATICS ; COLLISIONS
资助项目National Key R & D Program of China[2022YFA1603103] ; National Natural Science Foundation of China (NSFC)[W820301904265] ; National Natural Science Foundation of China (NSFC)[12033005] ; National Natural Science Foundation of China (NSFC)[11973076] ; National Natural Science Foundation of China (NSFC)[12173075] ; National Natural Science Foundation of China (NSFC)[12103082,12303027] ; Tianshan Talent Program of Xinjiang Uygur Autonomous Region[2022TSYCLJ0005] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2022D01E06] ; Chinese Academy of Sciences (CAS) Light of West China Program[xbzg-zdsys-202212] ; Chinese Academy of Sciences (CAS) Light of West China Program[2020-XBQNXZ-017] ; Chinese Academy of Sciences (CAS) Light of West China Program[2021-XBQNXZ-028] ; Xinjiang Key Laboratory of Radio Astrophysics[2023D04033] ; Youth Innovation Promotion Association CAS ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region[2022E01050] ; Project of Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talents ; Hebei NSF[A2022109001]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001144243700001
出版者IOP Publishing Ltd
资助机构National Key R & D Program of China ; National Natural Science Foundation of China (NSFC) ; Tianshan Talent Program of Xinjiang Uygur Autonomous Region ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences (CAS) Light of West China Program ; Xinjiang Key Laboratory of Radio Astrophysics ; Youth Innovation Promotion Association CAS ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region ; Project of Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talents ; Hebei NSF
源URL[http://ir.xao.ac.cn/handle/45760611-7/5721]  
专题恒星形成与演化研究团组
通讯作者Zhao, Mengke; Li, Guang-Xing; Zhou, Jianjun
作者单位1.Yunnan Univ, South Western Inst Astron Res, Kunming 650500, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
4.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China
5.Handan Univ, Coll Math & Phys, 530 Xueyuan Rd, Handan 056005, Peoples R China
6.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Mengke,Li, Guang-Xing,Zhou, Jianjun,et al. Magnetic Fields in Giant Filaments Probed by the Velocity Gradient Technique: Regular Magnetic Field Interrupted by Magnetization Gaps[J]. ASTROPHYSICAL JOURNAL,2024,961(1):124.
APA Zhao, Mengke.,Li, Guang-Xing.,Zhou, Jianjun.,Tang, Xindi.,Esimbek, Jarken.,...&Tursun, Kadirya.(2024).Magnetic Fields in Giant Filaments Probed by the Velocity Gradient Technique: Regular Magnetic Field Interrupted by Magnetization Gaps.ASTROPHYSICAL JOURNAL,961(1),124.
MLA Zhao, Mengke,et al."Magnetic Fields in Giant Filaments Probed by the Velocity Gradient Technique: Regular Magnetic Field Interrupted by Magnetization Gaps".ASTROPHYSICAL JOURNAL 961.1(2024):124.

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