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We present the B-fields mapped in IRDC G34.43+0.24 using 850\,$\mu$m polarized dust emission observed with the POL-2 instrument at JCMT. We examine the magnetic field geometries and strengths in the northern, central, and southern regions…

We present the first interferometric polarization map of the W51 e1/e2 molecular cores obtained with the BIMA array at 1.3 mm wavelength with approximately 3 arcsecond resolution. The polarization angle varies smoothly across the double…

Astrophysics · Physics 2009-11-06 Shih-Ping Lai , Richard M. Crutcher , Jose M. Girart , Ramprasad Rao

Observations of far-infrared (FIR) and submillimeter (SMM) polarized emission are used to study magnetic fields and dust grains in dense regions of the interstellar medium (ISM). These observations place constraints on models of molecular…

Astrophysics · Physics 2009-03-19 John E. Vaillancourt

We report the first detection of an hourglass magnetic field aligned with a well-defined outflow-rotation system in a high-mass star-forming region. The observations were performed with Submillimeter Array toward G240.31+0.07, which harbors…

Astrophysics of Galaxies · Physics 2015-06-22 Keping Qiu , Qizhou Zhang , Karl M. Menten , Hauyu B. Liu , Ya-Wen Tang , Josep M. Girart

We report 1.2 mm polarized continuum emission observations carried out with the Atacama Large Millimeter/submillimeter Array (ALMA) toward the high-mass star formation region G5.89-0.39. The observations show a prominent 0.2 pc north-south…

We present the 850 $\mu$m polarization observations toward the IC5146 filamentary cloud taken using the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) and its associated polarimeter (POL-2), mounted on the James Clerk Maxwell…

Astrophysics of Galaxies · Physics 2019-05-08 Jia-Wei Wang , Shih-Ping Lai , Chakali Eswaraiah , Kate Pattle , James Di Francesco , Doug Johnstone , Patrick M. Koch , Tie Liu , Motohide Tamura , Ray S. Furuya , Takashi Onaka , Derek Ward-Thompson , Archana Soam , Kee-Tae Kim , Chang Won Lee , Chin-Fei Lee , Steve Mairs , Doris Arzoumanian , Gwanjeong Kim , Thiem Hoang , Jihye Hwang , Sheng-Yuan Liu , David Berry , Pierre Bastien , Tetsuo Hasegawa , Woojin Kwon , Keping Qiu , Philippe André , Yusuke Aso , Do-Young Byun , Huei-Ru Chen , Michael C. Chen , Wen Ping Chen , Tao-Chung Ching , Jungyeon Cho , Minho Choi , Antonio Chrysostomou , Eun Jung Chung , Simon Coudé , Yasuo Doi , C. Darren Dowell , Emily Drabek-Maunder , Hao-Yuan Duan , Stewart P. S. Eyres , Sam Falle , Lapo Fanciullo , Jason Fiege , Erica Franzmann , Per Friberg , Rachel K. Friesen , Gary Fuller , Tim Gledhill , Sarah F. Graves , Jane S. Greaves , Matt J. Griffin , Qilao Gu , Ilseung Han , Jennifer Hatchell , Saeko S. Hayashi , Wayne Holland , Martin Houde , Tsuyoshi Inoue , Shu-ichiro Inutsuka , Kazunari Iwasaki , Il-Gyo Jeong , Yoshihiro Kanamori , Ji-hyun Kang , Miju Kang , Sung-ju Kang , Akimasa Kataoka , Koji S. Kawabata , Francisca Kemper , Jongsoo Kim , Kyoung Hee Kim , Mi-Ryang Kim , Shinyoung Kim , Jason M. Kirk , Masato I. N. Kobayashi , Vera Konyves , Jungmi Kwon , Kevin M. Lacaille , Hyeseung Lee , Jeong-Eun Lee , Sang-Sung Lee , Yong-Hee Lee , Dalei Li , Di Li , Hua-bai Li , Hong-Li Liu , Junhao Liu , A-Ran Lyo , Masafumi Matsumura , Brenda C. Matthews , Gerald H. Moriarty-Schieven , Tetsuya Nagata , Fumitaka Nakamura , Hiroyuki Nakanishi , Nagayoshi Ohashi , Geumsook Park , Harriet Parsons , Enzo Pascale , Nicolas Peretto , Andy Pon , Tae-Soo Pyo , Lei Qian , Ramprasad Rao , Mark G. Rawlings , Brendan Retter , John Richer , Andrew Rigby , Jean-François Robitaille , Sarah Sadavoy , Hiro Saito , Giorgio Savini , Anna M. M. Scaife , Masumichi Seta , Hiroko Shinnaga , Ya-Wen Tang , Kohji Tomisaka , Yusuke Tsukamoto , Sven van Loo , Hongchi Wang , Anthony P. Whitworth , Hsi-Wei Yen , Hyunju Yoo , Jinghua Yuan , Hyeong-Sik Yun , Tetsuya Zenko , Chuan-Peng Zhang , Guoyin Zhang , Ya-Peng Zhang , Jianjun Zhou , Zhu

We report the first high spatial resolution measurement of magnetic fields surrounding LkH$\alpha$ 101, a part of the Auriga-California molecular cloud. The observations were taken with the POL-2 polarimeter on the James Clerk Maxwell…

Astrophysics of Galaxies · Physics 2021-03-17 Nguyen Bich Ngoc , Pham Ngoc Diep , Harriet Parsons , Kate Pattle , Thiem Hoang , Derek Ward-Thompson , Le Ngoc Tram , Charles L. H. Hull , Mehrnoosh Tahani , Ray Furuya , Pierre Bastien , Keping Qiu , Tetsuo Hasegawa , Woojin Kwon , Yasuo Doi , Shih-Ping Lai , Simon Coude , David Berry , Tao-Chung Ching , Jihye Hwang , Archana Soam , Jia-Wei Wang , Doris Arzoumanian , Tyler L. Bourke , Do-Young Byun , Huei-Ru Vivien Chen , Zhiwei Chen , Wen Ping Chen , Mike Chen , Jungyeon Cho , Yunhee Choi , Minho Choi , Antonio Chrysostomou , Eun Jung Chung , Sophia Dai , James Di Francesco , Yan Duan , Hao-Yuan Duan , David Eden , Chakali Eswaraiah , Lapo Fanciullo , Jason Fiege , Laura M. Fissel , Erica Franzmann , Per Friberg , Rachel Friesen , Gary Fuller , Tim Gledhill , Sarah Graves , Jane Greaves , Matt Griffin , Qilao Gu , Ilseung Han , Jennifer Hatchell , Saeko Hayashi , Martin Houde , Tsuyoshi Inoue , Shu-ichiro Inutsuka , Kazunari Iwasaki , Il-Gyo Jeong , Doug Johnstone , Ji-hyun Kang , Sung-ju Kang , Miju Kang , Akimasa Kataoka , Koji Kawabata , Francisca Kemper , Kee-Tae Kim , Jongsoo Kim , Tae-Soo Pyo , Lei Qian , Ramprasad Rao , Mark Rawlings , Jonathan Rawlings , Brendan Retter , John Richer , Andrew Rigby , Sarah Sadavoy , Hiro Saito , Giorgio Savini , Anna Scaife , Masumichi Seta , Gwanjeong Kim , Shinyoung Kim , Kyoung Hee Kim , Mi-Ryang Kim , Florian Kirchschlager , Jason Kirk , Masato I. N. Kobayashi , Patrick M. Koch , Vera Konyves , Takayoshi Kusune , Jungmi Kwon , Kevin Lacaille , Chi-Yan Law , Sang-Sung Lee , Yong-Hee Lee , Chin-Fei Lee , Jeong-Eun Lee , Hyeseung Lee , Chang Won Lee , Di Li , Hua-bai Li , Dalei Li , Hong-Li Liu , Junhao Liu , Tie Liu , Sheng-Yuan Liu , Xing Lu , A-Ran Lyo , Steve Mairs , Masafumi Matsumura , Brenda Matthews , Gerald Moriarty-Schieven , Tetsuya Nagata , Fumitaka Nakamura , Hiroyuki Nakanishi , Nagayoshi Ohashi , Takashi Onaka , Geumsook Park , Nicolas Peretto , Yoshito Shimajiri , Hiroko Shinnaga , Motohide Tamura , Ya-Wen Tang , Xindi Tang , Kohji Tomisaka , Yusuke Tsukamoto , Serena Viti , Hongchi Wang , Anthony Whitworth , Jinjin Xie , Hsi-Wei Yen , Hyunju Yoo , Jinghua Yuan , Hyeong-Sik Yun , Tetsuya Zenko , Yapeng Zhang , Chuan-Peng Zhang , Guoyin Zhang , Jianjun Zhou , Lei Zhu , Ilse de Looze , Philippe Andre , C. Darren Dowell , Stewart Eyres , Sam Falle , Jean-Francois Robitaille , Sven van Loo

Here, we report ALMA detections of polarized emission from dust, CS($J=5 \rightarrow 4$), and C$^{33}$S($J=5 \rightarrow 4$) toward the high-mass star-forming region NGC6334I(N). A clear ``hourglass'' magnetic field morphology was inferred…

Aims: In this paper we present a case study to investigate conditions necessary to detect a characteristic magnetic field substructure embedded in a large-scale field. A helical magnetic field with a surrounding hourglass shaped field is…

Solar and Stellar Astrophysics · Physics 2017-07-12 S. Reissl , D. Seifried , S. Wolf , R. Banerjee , R. S. Klessen

We used the Submillimeter Array (SMA) to observe the thermal polarized dust emission from the protostellar source NGC 2024 FIR 5. The polarized emission outlines a partial hourglass morphology for the plane-of-sky component of the core…

Astrophysics of Galaxies · Physics 2015-05-20 Felipe de O. Alves , Josep M. Girart , Shih-Ping Lai , Ramprasad Rao , Qizhou Zhang

We present the polarization detections in DR21(OH) from both the thermal dust emission at 1.3 mm and the CO J=2-1 line obtained with the Berkeley-Illinois-Maryland Association (BIMA) array. Our results are consistent with the prediction of…

Astrophysics · Physics 2009-11-10 Shih-Ping Lai , Josep M. Girart , Richard Crutcher

Due to dust grain alignment with magnetic fields, dust polarization observations of far-infrared emission from cold molecular clouds are often used to trace magnetic fields, allowing a probe of the effects of magnetic fields on the star…

Observations of cosmic microwave background in the range 10-90 GHz have revealed an anomalous foreground component well correlated with 12 \mum, 60 \mum and 100 \mum emission from interstellar dust. As the recent cross-correlation analysis…

Astrophysics · Physics 2007-05-23 A. Lazarian

We discuss a high resolution (FWHM~ 0.45 arcsec) image of the emissive polarization from warm dust in the minispiral in the Galactic Centre and discuss the implications for the magnetic field in the dusty filaments. The image was obtained…

Astrophysics of Galaxies · Physics 2018-08-01 P. F. Roche , E. Lopez-Rodriguez , C. M. Telesco , R. Schodel , C. Packham

Context. Submillimeter Array (SMA) 870 micron polarization observations of the hot molecular core G31.41+0.31 revealed one of the clearest examples up to date of an hourglass-shaped magnetic field morphology in a high-mass star-forming…

Starlight that becomes linearly polarized by magnetically aligned dust grains provides a viable diagnostic of the interstellar magnetic field (ISMF). A survey is underway to map the local ISMF using data collected at eight observatories in…

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

Linearly polarized dust emission traces the plane-of-sky magnetic field structure, thus allowing us to investigate the role of magnetic fields in the formation and evolution of cloud cores. In this work, we present observations of dust…

Solar and Stellar Astrophysics · Physics 2025-11-18 Shivani Gupta , Archana Soam , Janik Karoly , Chang Won Lee

Magnetic fields are fundamental to the evolution of galaxies, playing a key role in the astrophysics of the interstellar medium and star formation. Large-scale ordered magnetic fields have been mapped in the Milky Way and nearby galaxies,…

Astrophysics of Galaxies · Physics 2023-09-06 J. E. Geach , E. Lopez-Rodriguez , M. J. Doherty , Jianhang Chen , R. J. Ivison , G. J. Bendo , S. Dye , K. E. K. Coppin

We present observations of linear polarization from dust thermal emission at 850 $\mu m$ towards the starless cloud L183. These data were obtained at the James Clerk Maxwell Telescope (JCMT) using the Submillimetre Common-User Bolometer…

Solar and Stellar Astrophysics · Physics 2020-08-10 Janik Karoly , Archana Soam , B-G Andersson , Simon Coudé , Pierre Bastien , John E. Vaillancourt , Chang Won Lee