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We present the Atacama Large Millimeter/submillimeter Array (ALMA) observations of linearly polarized 870 $\mu$m continuum emission at a resolution of $\sim$0.2$^{\prime\prime}$ (2000 au) toward the two massive clumps, Clump 1 and Clump 4,…

The detailed magnetic field structure of the starless dense core CB81 (L1774, Pipe 42) in the Pipe Nebula was determined based on near-infrared polarimetric observations of background stars to measure dichroically polarized light produced…

We present high-resolution magnetic field maps of the M17 SW molecular cloud using JCMT 850 $\mu$m dust polarization at a scale of 14$''$. The magnetic field exhibits a distinct arc-like structure that encircles three dense clumps (C1, C2,…

The orientation of the magnetic field (B-field) in the filamentary dark cloud GF 9 was traced from the periphery of the cloud into the L1082C dense core that contains the low-mass, low-luminosity Class 0 young stellar object (YSO) GF 9-2…

Instrumentation and Methods for Astrophysics · Physics 2018-11-07 Dan P. Clemens , A. M. El Batal , C. Cerny , S. Kressy , G. Schroeder , T. Pillai

Recent asteroseismic analyses have revealed the presence of strong (B $\gtrsim 10^5$ G) magnetic fields in the cores of many red giant stars. Here, we examine the implications of these results for the evolution of stellar magnetic fields,…

Solar and Stellar Astrophysics · Physics 2016-06-15 Matteo Cantiello , Jim Fuller , Lars Bildsten

The HH 1-2 region in the L1641 molecular cloud was observed in the near-IR J, H, and Ks bands, and imaging polarimetry was performed. Seventy six point-like sources were detected in all three bands. The near-IR polarizations of these…

Astrophysics of Galaxies · Physics 2014-11-20 Jungmi Kwon , Minho Choi , Soojong Pak , Ryo Kandori , Motohide Tamura , Tetsuya Nagata , Shuji Sato

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

We present 850 $\mu$m polarimetric observations toward the Serpens Main molecular cloud obtained using the POL-2 polarimeter on the James Clerk Maxwell Telescope (JCMT) as part of the B-fields In STar-forming Region Observations (BISTRO)…

Astrophysics of Galaxies · Physics 2022-03-02 Woojin Kwon , Kate Pattle , Sarah Sadavoy , Charles L. H. Hull , Doug Johnstone , Derek Ward-Thompson , James Di Francesco , Patrick M. Koch , Ray Furuya , Yasuo Doi , Valentin J. M. Le Gouellec , Jihye Hwang , A-Ran Lyo , Archana Soam , Xindi Tang , Thiem Hoang , Florian Kirchschlager , Chakali Eswaraiah , Lapo Fanciullo , Kyoung Hee Kim , Takashi Onaka , Vera Könyves , Ji-hyun Kang , Chang Won Lee , Motohide Tamura , Pierre Bastien , Tetsuo Hasegawa , Shih-Ping Lai , Keping Qiu , David Berry , Doris Arzoumanian , Tyler L. Bourke , Do-Young Byun , Wen Ping Chen , Huei-Ru Vivien Chen , Mike Chen , Zhiwei Chen , Tao-Chung Ching , Jungyeon Cho , Yunhee Choi , Minho Choi , Antonio Chrysostomou , Eun Jung Chung , Simon Coudé , Sophia Dai , Pham Ngoc Diep , Yan Duan , Hao-Yuan Duan , David Eden , 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 , Miju Kang , Janik Karoly , Akimasa Kataoka , Koji Kawabata , Francisca Kemper , Kee-Tae Kim , Gwanjeong Kim , Mi-Ryang Kim , Shinyoung Kim , Jongsoo Kim , Jason Kirk , Masato I. N. Kobayashi , Takayoshi Kusune , Jungmi Kwon , Kevin Lacaille , Chi-Yan Law , Chin-Fei Lee , Yong-Hee Lee , Hyeseung Lee , Jeong-Eun Lee , Sang-Sung Lee , Dalei Li , Di Li , Hua-bai Li , Sheng-Jun Lin , Sheng-Yuan Liu , Hong-Li Liu , Junhao Liu , Tie Liu , Xing Lu , Steve Mairs , Masafumi Matsumura , Brenda Matthews , Gerald Moriarty-Schieven , Tetsuya Nagata , Fumitaka Nakamura , Hiroyuki Nakanishi , Nguyen Bich Ngoc , Nagayoshi Ohashi , Geumsook Park , Harriet Parsons , Nicolas Peretto , Felix Priestley , Tae-Soo Pyo , Lei Qian , Ramprasad Rao , Jonathan Rawlings , Mark G. Rawlings , Brendan Retter , John Richer , Andrew Rigby , Hiro Saito , Giorgio Savini , Masumichi Seta , Yoshito Shimajiri , Hiroko Shinnaga , Mehrnoosh Tahani , Ya-Wen Tang , Kohji Tomisaka , Le Ngoc Tram , Yusuke Tsukamoto , Serena Viti , Hongchi Wang , Jia-Wei Wang , Anthony Whitworth , Jintai Wu , 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 André , C. Darren Dowell , Stewart Eyres , Sam Falle , Jean-François Robitaille , Sven van Loo

Although, from a theoretical point of view, magnetic fields are believed to have a significant role during the early stages of star formation, especially during the main accretion phase, the magnetic field strength and topology is poorly…

We present the results of a large suite of three-dimensional (3D) models of the collapse of magnetic molecular cloud cores using the adaptive mesh refinement (AMR) code Enzo2.2 in the ideal magnetohydrodynamics (MHD) approximation. The…

Solar and Stellar Astrophysics · Physics 2015-06-22 A. P. Boss , S. A. Keiser

Determining the importance of magnetic fields in star forming environments is hampered by the difficulty of accurately measuring both field strength and gas properties in molecular clouds. We post-process three-dimensional non-ideal…

Astrophysics of Galaxies · Physics 2021-04-28 Charles Yin , Felix D. Priestley , James Wurster

Total magnetic fields in spiral galaxies, as observed through their total synchrotron emission, are strongest (up to \simeq 30\mu G) in the spiral arms. The degree of radio polarization is low; the field in the arms must be mostly turbulent…

Astrophysics · Physics 2009-11-11 Rainer Beck

The observed upper bound on the spin down rate of the otherwise typical Soft Gamma-ray Repeater SGR 0418+5729 has challenged the interpretation of this source as a neutron star with ultrastrong magnetic fields. Current limits imply a dipole…

High Energy Astrophysical Phenomena · Physics 2011-10-03 Tolga Guver , Ersin Gogus , Feryal Ozel

(Abridged) We present a series of decaying turbulence simulations that represent a cluster-forming clump within a molecular cloud, investigating the role of magnetic fields on the formation of potential star-forming cores. We present an…

Astrophysics · Physics 2007-11-07 David A. Tilley , Ralph E. Pudritz

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…

Abridged. A large fraction of stars are found in binary systems. It is therefore important for our understanding of the star formation process, to investigate the fragmentation of dense molecular cores. We study the influence of the…

Astrophysics · Physics 2009-11-13 P. Hennebelle , R. Teyssier

We present the first interferometric polarization maps of the NGC2024 FIR5 molecular core obtained with the BIMA array at approximately 2 arcsec resolution. We measure an average position angle of -60+-6 degrees in the main core of FIR5 and…

Astrophysics · Physics 2009-11-07 Shih-Ping Lai , Richard M. Crutcher , Jose M. Girart , Ramprasad Rao

We aim to detect the magnetic field and infer its properties around four AGB stars using H$_2$O maser observations. The sample we observed consists of the following sources: the semi-regular variable RT Vir and the Mira variables AP Lyn, IK…

Solar and Stellar Astrophysics · Physics 2015-06-15 M. L. Leal-Ferreira , W. H. T. Vlemmings , A. Kemball , N. Amiri

The role of magnetic fields in the early stages of star formation is not well constrained. In order to discriminate between different star formation models, we analyze 3D magnetohydrodynamic simulations of low-mass cores and explore the…

Astrophysics of Galaxies · Physics 2017-01-18 Joyce W. Y. Lee , Charles L. H. Hull , Stella S. R. Offner

We present the first published maps of magnetic fields in pre-stellar cores, to test theoretical ideas about the way in which the magnetic field geometry affects the star formation process. The observations are JCMT-SCUBA maps of 850 micron…

Astrophysics · Physics 2009-10-31 D. Ward-Thompson , J. M. Kirk , R. M. Crutcher , J. S. Greaves , W. S. Holland , P. Andre
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