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Recent observations have identified hub-filament systems (HFSs) as the primary formation sites of massive stars and star clusters. Some HFSs are characterized by multiple filaments aligned radially toward a central high-density hub.…

Astrophysics of Galaxies · Physics 2026-03-04 Shingo Nozaki , Shu-ichiro Inutsuka

The alignment of interstellar dust grains with magnetic fields provides a key method for measuring the strength and morphology of the fields. In turn, this provides a means to study the role of magnetic fields from diffuse gas to dense…

Astrophysics of Galaxies · Physics 2016-02-09 John E. Vaillancourt , B-G Andersson

After the morphological classification of the 18,190 $^{12}$CO molecular clouds, we further investigate the properties of their internal molecular gas structures traced by the $^{13}$CO($J=$ 1$-$0) line emissions. Using three different…

Astrophysics of Galaxies · Physics 2022-08-17 Lixia Yuan , Ji Yang , Fujun Du , Yang Su , Xunchuan Liu , Shaobo Zhang , Yan Sun , Xin Zhou , Qing-Zeng Yan , Yuehui Ma

Data of $^{12}$CO/$^{13}$CO/C$^{18}$O $J=1\to0$ emission toward the Galactic plane region of $l=35^\circ$ to $45^\circ$ and $b= -5^\circ$ to $+5^\circ$ are available with the Milky Way Imaging Scroll Painting (MWISP) project. Using the…

Astrophysics of Galaxies · Physics 2020-09-30 Liang-Hao Lin , Hong-Chi Wang , Yang Su , Chong Li , Ji Yang

We present observational results of the thermal dust continuum emission and its linear polarization in one of the nearest massive star-forming sites Orion BN/KL in Orion Molecular Cloud-1. The observations were carried out with the…

Astrophysics of Galaxies · Physics 2015-05-19 Ya-Wen Tang , Paul T. P. Ho , Patrick M. Koch , Ramprasad Rao

We observed the L1506 filament, which is located in the Taurus molecular complex, with the Herschel PACS and SPIRE instruments. Our aim is to prove the variation in grain properties along the entire length of the filament. In particular, we…

NGC 1316 is a giant, elliptical galaxy containing a complex network of dark, dust features. The morphology of these features has been examined in some detail using a Hubble Space Telescope, Advanced Camera for Surveys image. It is found…

Astrophysics of Galaxies · Physics 2010-03-31 Per Carlqvist

Even though magnetic fields play an important role in galaxy evolution, the redshift evolution of galactic-scale magnetic fields is not well constrained observationally. In this paper we aim to provide an observational constraint on the…

Astrophysics of Galaxies · Physics 2025-07-18 Timea Orsolya Kovacs , Sui Ann Mao , Aritra Basu , Yik Ki Ma , B. M. Gaensler

In this paper, we show that if the broad line region clouds are in approximate energy equipartition between the magnetic field and gravity, as hypothesized by Rees, there will be a significant effect on the shape and smoothness of broad…

Astrophysics · Physics 2009-10-31 M. C. Bottorff , G. J. Ferland

Filaments are an ubiquitous feature of molecular clouds, and appear to play a critical role in assembling the material to form stars. The dominant filaments are observed to have a rather narrow range of widths around $\sim 0.1$ pc, and to…

Astrophysics of Galaxies · Physics 2022-03-14 F. D. Priestley , A. P. Whitworth

It is often envisaged that dense filament material lies in the dips of magnetic field lines belonging to either a sheared arcade or a magnetic flux rope. But it is also debated which configuration correctly depicts filaments' magnetic…

Solar and Stellar Astrophysics · Physics 2019-02-22 Arun Kumar Awasthi , Rui Liu , Yuming Wang

We carry out a population study of magnetized radio filaments in the Galactic center using MeerKAT data by focusing on the spacing between the filaments that are grouped. The morphology of a sample of 43 groupings containing 174 magnetized…

High Energy Astrophysical Phenomena · Physics 2022-06-29 F. Yusef-Zadeh , R. G. Arendt , M. Wardle , S. Boldyrev , I. Heywood , W. Cotton , F. Camilo

The strengths of magnetic fields in interstellar gas clouds are obtained through observations of the circular polarization of spectral line radiation. Irregularities in this magnetic field may be present due to turbulence, waves or perhaps…

Astrophysics · Physics 2009-10-31 W. D. Watson , D. S. Wiebe , R. M. Crutcher

We present 850$\mu$m polarized observations of the molecular cloud G34.26+0.15 taken using the POL-2 polarimeter mounted on the James Clerk Maxwell Telescope (JCMT). G34.26+0.15 is a hub-filament system with ongoing high-mass…

Astrophysics of Galaxies · Physics 2024-10-10 Zacariyya A. Khan , Kate Pattle , Sarah F. Graves

In this paper, we report our multiwavelength observations of the large-amplitude longitudinal oscillations of a filament on 2015 May 3. Located next to active region 12335, the sigmoidal filament was observed by the ground-based H$\alpha$…

Solar and Stellar Astrophysics · Physics 2017-06-21 Q. M. Zhang , T. Li , R. S. Zheng , Y. N. Su , H. S. Ji

We report 850 $\mu$m continuum polarization observations toward the filamentary high-mass star-forming region NGC 2264, taken as part of the B-fields In STar forming Regions Observations (BISTRO) large program on the James Clerk Maxwell…

Solar and Stellar Astrophysics · Physics 2024-01-24 Jia-Wei Wang , Patrick M. Koch , Seamus D. Clarke , Gary Fuller , Nicolas Peretto , Ya-Wen Tang , Hsi-Wei Yen , Shih-Ping Lai , Nagayoshi Ohashi , Doris Arzoumanian , Doug Johnstone , Ray Furuya , Shu-ichiro Inutsuka , Chang Won Lee , Derek Ward-Thompson , Valentin J. M. Le Gouellec , Hong-Li Liu , Lapo Fanciullo , Jihye Hwang , Kate Pattle , Frédérick Poidevin , Mehrnoosh Tahani , Takashi Onaka , Mark G. Rawlings , Eun Jung Chung , Junhao Liu , A-Ran Lyo , Felix Priestley , Thiem Hoang , Motohide Tamura , David Berry , Pierre Bastien , Tao-Chung Ching , Simon Coudé , Woojin Kwon , Mike Chen , Chakali Eswaraiah , Archana Soam , Tetsuo Hasegawa , Keping Qiu , Tyler L. Bourke , Do-Young Byun , Zhiwei Chen , Huei-Ru Vivien Chen , Wen Ping Chen , Jungyeon Cho , Minho Choi , Yunhee Choi , Youngwoo Choi , Antonio Chrysostomou , Sophia Dai , James Di Francesco , Pham Ngoc Diep , Yasuo Doi , Yan Duan , Hao-Yuan Duan , David Eden , Jason Fiege , Laura M. Fissel , Erica Franzmann , Per Friberg , Rachel Friesen , Tim Gledhill , Sarah Graves , Jane Greaves , Matt Griffin , Qilao Gu , Ilseung Han , Saeko Hayashi , Martin Houde , Tsuyoshi Inoue , Kazunari Iwasaki , Il-Gyo Jeong , Vera Könyves , Ji-hyun Kang , Miju Kang , Janik Karoly , Akimasa Kataoka , Koji Kawabata , Zacariyya Khan , Mi-Ryang Kim , Kee-Tae Kim , Kyoung Hee Kim , Shinyoung Kim , Jongsoo Kim , Hyosung Kim , Gwanjeong Kim , Florian Kirchschlager , Jason Kirk , Masato I. N. Kobayashi , Takayoshi Kusune , Jungmi Kwon , Kevin Lacaille , Chi-Yan Law , Sang-Sung Lee , Hyeseung Lee , Jeong-Eun Lee , Chin-Fei Lee , Dalei Li , Hua-bai Li , Guangxing Li , Di Li , Sheng-Jun Lin , Tie Liu , Sheng-Yuan Liu , Xing Lu , Steve Mairs , Masafumi Matsumura , Brenda Matthews , Gerald Moriarty-Schieven , Tetsuya Nagata , Fumitaka Nakamura , Hiroyuki Nakanishi , Nguyen Bich Ngoc , Geumsook Park , Harriet Parsons , Tae-Soo Pyo , Lei Qian , Ramprasad Rao , Jonathan Rawlings , Brendan Retter , John Richer , Andrew Rigby , Sarah Sadavoy , Hiro Saito , Giorgio Savini , Masumichi Seta , Ekta Sharma , Yoshito Shimajiri , Hiroko Shinnaga , Xindi Tang , Hoang Duc Thuong , Kohji Tomisaka , Le Ngoc Tram , Yusuke Tsukamoto , Serena Viti , Hongchi Wang , Anthony Whitworth , Jintai Wu , Jinjin Xie , Meng-Zhe Yang , Hyunju Yoo , Jinghua Yuan , Hyeong-Sik Yun , Tetsuya Zenko , Chuan-Peng Zhang , Yapeng Zhang , Guoyin Zhang , Jianjun Zhou , Lei Zhu , Ilse de Looze , Philippe André , C. Darren Dowell , Stewart Eyres , Sam Falle , Jean-François Robitaille , Sven van Loo

Planck observations at 353GHz provide the first fully-sampled maps of the polarized dust emission towards interstellar filaments and their backgrounds. The polarization data provide insight on the structure of their magnetic field (B). We…

Astrophysics of Galaxies · Physics 2016-02-10 Planck Collaboration , P. A. R. Ade , N. Aghanim , M. I. R. Alves , M. Arnaud , D. Arzoumanian , J. Aumont , C. Baccigalupi , A. J. Banday , R. B. Barreiro , N. Bartolo , E. Battaner , K. Benabed , A. Benoit-Lévy , J. -P. Bernard , O. Berné , M. Bersanelli , P. Bielewicz , A. Bonaldi , L. Bonavera , J. R. Bond , J. Borrill , F. R. Bouchet , F. Boulanger , A. Bracco , C. Burigana , E. Calabrese , J. -F. Cardoso , A. Catalano , A. Chamballu , H. C. Chiang , P. R. Christensen , D. L. Clements , S. Colombi , C. Combet , F. Couchot , B. P. Crill , A. Curto , F. Cuttaia , L. Danese , R. D. Davies , R. J. Davis , P. de Bernardis , A. de Rosa , G. de Zotti , J. Delabrouille , C. Dickinson , J. M. Diego , S. Donzelli , O. Doré , M. Douspis , A. Ducout , X. Dupac , F. Elsner , T. A. Enßlin , H. K. Eriksen , E. Falgarone , K. Ferrière , O. Forni , M. Frailis , A. A. Fraisse , E. Franceschi , A. Frejsel , S. Galeotta , S. Galli , K. Ganga , T. Ghosh , M. Giard , Y. Giraud-Héraud , E. Gjerløw , J. González-Nuevo , A. Gregorio , A. Gruppuso , V. Guillet , F. K. Hansen , D. Hanson , D. L. Harrison , C. Hernández-Monteagudo , D. Herranz , S. R. Hildebrandt , E. Hivon , M. Hobson , W. A. Holmes , K. M. Huffenberger , G. Hurier , A. H. Jaffe , T. R. Jaffe , W. C. Jones , M. Juvela , R. Keskitalo , T. S. Kisner , J. Knoche , M. Kunz , H. Kurki-Suonio , G. Lagache , J. -M. Lamarre , A. Lasenby , C. R. Lawrence , R. Leonardi , F. Levrier , M. Liguori , P. B. Lilje , M. Linden-Vørnle , M. López-Caniego , P. M. Lubin , J. F. Macías-Pérez , B. Maffei , N. Mandolesi , A. Mangilli , M. Maris , P. G. Martin , E. Martínez-González , S. Masi , S. Matarrese , P. Mazzotta , A. Melchiorri , L. Mendes , A. Mennella , M. Migliaccio , S. Mitra , M. -A. Miville-Deschênes , A. Moneti , L. Montier , G. Morgante , D. Mortlock , D. Munshi , J. A. Murphy , P. Naselsky , F. Nati , P. Natoli , H. U. Nørgaard-Nielsen , F. Noviello , D. Novikov , I. Novikov , N. Oppermann , L. Pagano , F. Pajot , R. Paladini , D. Paoletti , F. Pasian , F. Perrotta , V. Pettorino , F. Piacentini , M. Piat , E. Pierpaoli , D. Pietrobon , S. Plaszczynski , E. Pointecouteau , G. Polenta , G. W. Pratt , J. -L. Puget , J. P. Rachen , R. Rebolo , M. Reinecke , M. Remazeilles , C. Renault , A. Renzi , S. Ricciardi , I. Ristorcelli , G. Rocha , C. Rosset , M. Rossetti , G. Roudier , J. A. Rubiño-Martín , B. Rusholme , M. Sandri , M. Savelainen , G. Savini , D. Scott , J. D. Soler , V. Stolyarov , D. Sutton , A. -S. Suur-Uski , J. -F. Sygnet , J. A. Tauber , L. Terenzi , L. Toffolatti , M. Tomasi , M. Tristram , M. Tucci , L. Valenziano , J. Valiviita , B. Van Tent , P. Vielva , F. Villa , L. A. Wade , B. D. Wandelt , D. Yvon , A. Zacchei , A. Zonca

One "strong" magnetic cloud (MC) with the magnetic field magnitude reaching $\sim$ 40 nT at 1 au during 2012 June 16-17 is examined in association with a pre-existing magnetic flux rope (MFR) identified on the Sun. The MC is characterized…

Solar and Stellar Astrophysics · Physics 2022-08-03 Qiang Hu , Chunming Zhu , Wen He , Jiong Qiu , Lan K. Jian , Avijeet Prasad

We report the discovery of more than 323 superfine dusty filamentary structures (fibrils) inside 121 massive star forming clumps that are located in widely different Galactic environments (Galactocentric distances of $\sim$0.5-12.7 kpc).…

We report on the discovery of linear filaments observed in CO(1-0) emission for a $\sim2'$ field of view toward the Sgr E star forming region centered at (l,b)=(358.720$^\circ$, 0.011$^\circ$). The Sgr E region is thought to be at the…