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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

In this work, we study the magnetic field morphology of selected star-forming clouds spread over the galactic latitude ($b$) range, $-10^\circ$ to $10^\circ$. The polarimetric observation of clouds CB24, CB27 and CB188 are conducted to…

Astrophysics of Galaxies · Physics 2022-06-22 Gulafsha B. Choudhury , Himadri S. Das , B. J. Medhi , J. C. Pandey , S. Wolf , T. K. Dhar , A. M. Mazarbhuiya

We have obtained sensitive dust continuum polarization observations at 850 $\mu$m in the B213 region of Taurus using POL-2 on SCUBA-2 at the James Clerk Maxwell Telescope (JCMT), as part of the BISTRO (B-fields in STar-forming Region…

Astrophysics of Galaxies · Physics 2021-06-23 Chakali Eswaraiah , Di Li , Ray S. Furuya , Tetsuo Hasegawa , Derek Ward-Thompson , Keping Qiu , Nagayoshi Ohashi , Kate Pattle , Sarah Sadavoy , Charles L. H. Hull , David Berry , Yasuo Doi , Tao-Chung Ching , Shih-Ping Lai , Jia-Wei Wang , Patrick M. Koch , Jungmi Kwon , Woojin Kwon , Pierre Bastien , Doris Arzoumanian , Simon Coudé , Archana Soam , Lapo Fanciullo , Hsi-Wei Yen , Junhao Liu , Thiem Hoang , Wen Ping Chen , Yoshito Shimajiri , Tie Liu , Zhiwei Chen , Hua-bai Li , A-Ran Lyo , Jihye Hwang , Doug Johnstone , Ramprasad Rao , Nguyen Bich Ngoc , Pham Ngoc Diep , Steve Mairs , Harriet Parsons , Motohide Tamura , Mehrnoosh Tahani , Huei-Ru Vivien Chen , Fumitaka Nakamura , Hiroko Shinnaga , Ya-Wen Tang , Jungyeon Cho , Chang Won Lee , Shu-ichiro Inutsuka , Tsuyoshi Inoue , Kazunari Iwasaki , Lei Qian , Jinjin Xie , Dalei Li , Hong-Li Liu , Chuan-Peng Zhang , Mike Chen , Guoyin Zhang , Lei Zhu , Jianjun Zhou , Philippe André , Sheng-Yuan Liu , Jinghua Yuan , Xing Lu , Nicolas Peretto , Tyler L. Bourke , Do-Young Byun , Sophia Dai , Yan Duan , Hao-Yuan Duan , David Eden , Brenda Matthews , Jason Fiege , Laura M. Fissel , Kee-Tae Kim , Chin-Fei Lee , Jongsoo Kim , Tae-Soo Pyo , Yunhee Choi , Minho Choi , Antonio Chrysostomou , Eun Jung Chung , Le Ngoc Tram , 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 , Koji Kawabata , Il-Gyo Jeong , Ji-hyun Kang , Sung-ju Kang , Miju Kang , Akimasa Kataoka , Francisca Kemper , Mark Rawlings , Jonathan Rawlings , Brendan Retter , John Richer , Andrew Rigby , Hiro Saito , Giorgio Savini , Anna Scaife , Masumichi Seta , Gwanjeong Kim , Kyoung Hee Kim , Mi-Ryang Kim , Florian Kirchschlager , Jason Kirk , Masato I. N. Kobayashi , Vera Konyves , Takayoshi Kusune , Kevin Lacaille , Chi-Yan Law , Sang-Sung Lee , Yong-Hee Lee , Masafumi Matsumura , Gerald Moriarty-Schieven , Tetsuya Nagata , Hiroyuki Nakanishi , Takashi Onaka , Geumsook Park , Xindi Tang , Kohji Tomisaka , Yusuke Tsukamoto , Serena Viti , Hongchi Wang , Anthony Whitworth , Hyunju Yoo , Hyeong-Sik Yun , Tetsuya Zenko , Yapeng Zhang , Ilse de Looze , C. Darren Dowell , Stewart Eyres , Sam Falle , Jean-François Robitaille , Sven van Loo

Scattering of re-emitted flux is considered to be at least partially responsible for the observed polarisation in the (sub-)millimetre wavelength range of several protoplanetary disks. Although the degree of polarisation produced by…

Solar and Stellar Astrophysics · Physics 2020-08-26 Robert Brunngräber , Sebastian Wolf

Magnetic fields are a defining yet enigmatic aspect of the interstellar medium (ISM), with their three-dimensional mapping posing a substantial challenge. In this study, we harness the innovative Velocity Gradient Technique (VGT),…

Astrophysics of Galaxies · Physics 2024-01-15 Tyler Schmaltz , Yue Hu , A. Lazarian

Better understanding of Galactic foregrounds is one of the main obstacles to detection of primordial gravitational waves through measurement of the B mode in the polarized microwave sky. We generalize the method proposed in…

Cosmology and Nongalactic Astrophysics · Physics 2018-11-09 Hao Liu , James Creswell , Pavel Naselsky

We present a measurement of the $B$-mode polarization power spectrum of the cosmic microwave background anisotropies at 32 $\le$ $\ell$ $<$ 502 for three bands centered at 95, 150, and 220 GHz using data from the SPT-3G receiver on the…

Using high-resolution data from the Galactic Arecibo L-Band Feed Array HI (GALFA-HI) survey, we show that linear structure in Galactic neutral hydrogen (HI) correlates with the magnetic field orientation implied by Planck 353 GHz polarized…

Cosmology and Nongalactic Astrophysics · Physics 2015-12-16 S. E. Clark , J. Colin Hill , J. E. G. Peek , M. E. Putman , B. L. Babler

The heart of the Large Magellanic Cloud, 30 Doradus, is a complex region with a clear core-halo structure. Feedback from the stellar cluster R$\,$136 has been shown to be the main source of energy creating multiple pc-scale expanding-shells…

In order to analyze the importance of the star formation rate in generating and amplifying magnetic fields in the interstellar medium we obtained deep total power and polarization maps at 4.85 GHz of three late type spiral galaxies NGC4236,…

Astrophysics · Physics 2009-11-11 K. T. Chyzy , D. J. Bomans , M. Krause , R. Beck , M. Soida , M. Urbanik

Among the greatest mysteries in cosmology are the flatness problem, concerning the lack of curvature of the universe, and the homogeneity problem, questioning why the universe is almost isotropic despite having regions that are causally…

Cosmology and Nongalactic Astrophysics · Physics 2020-09-15 Praneet Bhoj , Roman Gerasimov , Brian Keating

In protoplanetary disks around young stars, magnetic fields play an important role for disk evolution and planet formation. Polarized thermal emission from magnetically aligned grains is one of the reliable methods to trace magnetic fields.…

Earth and Planetary Astrophysics · Physics 2025-02-11 Satoshi Ohashi , Takayuki Muto , Yusuke Tsukamoto , Akimasa Kataoka , Takashi Tsukagoshi , Munetake Momose , Misato Fukagawa , Nami Sakai

The relative alignments of mid-infrared traced Galactic bubbles are compared to the orientation of the mean Galactic magnetic field in the disk. The orientations of bubbles in the northern Galactic plane were measured and are consistent…

Astrophysics of Galaxies · Physics 2015-06-11 Michael D. Pavel , Dan P. Clemens

We report the detection of polarized emission in the vicinity of the Galactic center for 158 positions within eight different pointings of the Hertz polarimeter operating on the Caltech Submillimeter Observatory. These pointings include…

We present a magnetic-field surface map for both stellar components of the young visual binary ksi Boo AB (A: G8V, B: K5V). Employed are high resolution Stokes-V spectra obtained with the Potsdam Echelle Polarimetric and Spectroscopic…

Solar and Stellar Astrophysics · Physics 2023-06-14 K. G. Strassmeier , T. A. Carroll , I. V. Ilyin

Boson stars are considered as promising candidates for black hole mimickers. Similar to other compact objects they can form accretion disks around them. The properties of these disks could possibly distinguish them from other compact…

General Relativity and Quantum Cosmology · Physics 2024-02-06 Kristian Gjorgjieski , Jutta Kunz , Petya Nedkova

We present Herschel observations of the isolated, low-mass star-forming Bok globule CB244. It contains two cold sources, a low-mass Class 0 protostar and a starless core, which is likely to be prestellar in nature, separated by 90 arcsec (~…

Solar and Stellar Astrophysics · Physics 2015-05-18 A. Stutz , R. Launhardt , H. Linz , O. Krause , T. Henning , J. Kainulainen , M. Nielbock , J. Steinacker , P. Andre

The magnetic structure in the Galactic disk, the Galactic center and the Galactic halo can be delineated more clearly than ever before. In the Galactic disk, the magnetic structure has been revealed by starlight polarization within 2 or 3…

Astrophysics of Galaxies · Physics 2009-11-13 J. L. Han