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We determine magnetic fields from the photosphere to the upper chromosphere combining data from the Hinode satellite and the CLASP2.1 sounding rocket experiment. CLASP2.1 provided polarization profiles of the Mg~{|sc ii} $h$ and $k$ lines,…

This paper presents models to estimate the structure of density and magnetic field strength in spheroidal condensations, from maps of their column density and their polarization of magnetically aligned dust grains. The density model is…

Astrophysics of Galaxies · Physics 2020-07-01 Philip C. Myers , Ian W. Stephens , Sayantan Auddy , Shantanu Basu , Tyler L. Bourke , Charles L. H. Hull

We investigated the morphology and strength of magnetic fields in pillar-shaped structures at the boundaries of HII regions by combining three-dimensional radiation-magnetohydrodynamic, R-MHD, simulations with synthetic polarimetric…

We performed spectral line observations of CO J=2-1, 13CO J=1-0, and C18O J=1-0 and polarimetric observations in the 1.3 mm continuum and CO J=2-1 toward a multiple protostar system, L1448 IRS 3, in the Perseus molecular complex at a…

Astrophysics · Physics 2008-11-26 Woojin Kwon , Leslie W. Looney , Richard M. Crutcher , Jason M. Kirk

We report on spectropolarimetric observations of a near-IR line of Mn I located at 15262.702 A whose intensity and polarization profiles are very sensitive to the presence of hyperfine structure. A theoretical investigation of the magnetic…

NGC7538 is a complex massive star-forming region. The region is composed of several radio continuum sources, one of which is IRS1, a high-mass protostar, from which a 0.3 pc molecular bipolar outflow was detected. Several maser species have…

Solar and Stellar Astrophysics · Physics 2015-05-28 G. Surcis , W. H. T. Vlemmings , R. M. Torres , H. J. van Langevelde , B. Hutawarakorn Kramer

A sample of large northern Spitzer Infrared Nearby Galaxies Survey (SINGS) galaxies was recently observed with the Westerbork Synthesis Radio Telescope (WSRT) at 1300-1760 MHz. In Paper II of this series, we described sensitive observations…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Robert Braun , George Heald , Rainer Beck

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

While the longitudinal field that dominates photospheric network regions has been studied extensively, small scale transverse fields have recently been found to be ubiquitous in the quiet internetwork photosphere. Few observations have…

We present polarization maps of G30.79 FIR 10 (in W43) from thermal dust emission at 1.3 mm and from CO J=$2 \to 1$ line emission. The observations were obtained using the Berkeley-Illinois-Maryland Association array in the period…

Astrophysics · Physics 2009-11-11 P. C. Cortes , R. M. Crutcher

Sh 2-29 is a conspicuous star-forming region marked by the presence of massive embedded stars as well as several notable interstellar structures. In this research, our goals were to determine the role of magnetic fields and to study the…

We present polarization observations of the 6.7-GHz methanol masers around the massive protostar Cepheus A HW2 and its associated disc. The data were taken with the Multi-Element Radio Linked Interferometer Network. The maser polarization…

Astrophysics of Galaxies · Physics 2015-05-18 W. H. T. Vlemmings , G. Surcis , K. J. E. Torstensson , H. J. van Langevelde

The magnetic field structure of a star-forming Bok globule BHR 71 was determined based on near-infrared polarimetric observations of background stars. The magnetic field in BHR 71 was mapped from 25 stars. By using a simple 2D parabolic…

We present the POL-2 850 $\mu$m linear polarization map of the Barnard 1 clump in the Perseus molecular cloud complex from the B-fields In STar-forming Region Observations (BISTRO) survey at the James Clerk Maxwell Telescope. We find a…

Astrophysics of Galaxies · Physics 2019-05-31 Simon Coudé , Pierre Bastien , Martin Houde , Sarah Sadavoy , Rachel Friesen , James Di Francesco , Doug Johnstone , Steve Mairs , Tetsuo Hasegawa , Woojin Kwon , Shih-Ping Lai , Keping Qiu , Derek Ward-Thompson , David Berry , Michael Chun-Yuan Chen , Jason Fiege , Erica Franzmann , Jennifer Hatchell , Kevin Lacaille , Brenda C. Matthews , Gerald H. Moriarty-Schieven , Andy Pon , Philippe André , Doris Arzoumanian , Yusuke Aso , Do-Young Byun , Eswaraiah Chakali , Huei-Ru Chen , Wen Ping Chen , Tao-Chung Ching , Jungyeon Cho , Minho Choi , Antonio Chrysostomou , Eun Jung Chung , Yasuo Doi , Emily Drabek-Maunder , C. Darren Dowell , Stewart P. S. Eyres , Sam Falle , Per Friberg , Gary Fuller , Ray S. Furuya , Tim Gledhill , Sarah F. Graves , Jane S. Greaves , Matt J. Griffin , Qilao Gu , Saeko S. Hayashi , Thiem Hoang , Wayne Holland , Tsuyoshi Inoue , Shu-ichiro Inutsuka , Kazunari Iwasaki , Il-Gyo Jeong , Yoshihiro Kanamori , Akimasa Kataoka , Ji-hyun Kang , Miju Kang , Sung-ju Kang , Koji S. Kawabata , Francisca Kemper , Gwanjeong Kim , Jongsoo Kim , Kee-Tae Kim , Kyoung Hee Kim , Mi-Ryang Kim , Shinyoung Kim , Jason M. Kirk , Masato I. N. Kobayashi , Patrick M. Koch , Jungmi Kwon , Jeong-Eun Lee , Chang Won Lee , Sang-Sung Lee , Dalei Li , Di Li , Hua-bai Li , Hong-Li Liu , Junhao Liu , Sheng-Yuan Liu , Tie Liu , Sven van Loo , A-Ran Lyo , Masafumi Matsumura , Tetsuya Nagata , Fumitaka Nakamura , Hiroyuki Nakanishi , Nagayoshi Ohashi , Takashi Onaka , Harriet Parsons , Kate Pattle , Nicolas Peretto , Tae-Soo Pyo , Lei Qian , Ramprasad Rao , Mark G. Rawlings , Brendan Retter , John Richer , Andrew Rigby , Jean-François Robitaille , Hiro Saito , Giorgio Savini , Anna M. M. Scaife , Masumichi Seta , Hiroko Shinnaga , Archana Soam , Motohide Tamura , Ya-Wen Tang , Kohji Tomisaka , Yusuke Tsukamoto , Hongchi Wang , Jia-Wei Wang , Anthony P. Whitworth , Hsi-Wei Yen , Hyunju Yoo , Jinghua Yuan , Tetsuya Zenko , Chuan-Peng Zhang , Guoyin Zhang , Jianjun Zhou , Lei Zhu

We present an analysis of the magnetic field strength and morphology in the Sagittarius C complex (Sgr C; G359.43-0.09) in the Milky Way Galaxy's Central Molecular Zone (CMZ), using the 214 $\mu$m polarimetry data acquired with the…

High-resolution images of the hypercompact HII regions (HCHII) in W3 IRS 5 taken with the Very Large Array (VLA) at 1.3 and 0.7 cm are presented. Four HCHII regions were detected with sufficient signal-to-noise ratios to allow the…

Astrophysics · Physics 2009-11-10 T. L. Wilson , D. A. Boboltz , R. A. Gaume , S. T. Megeath

We describe a first attempt to derive properties of the regular and turbulent Galactic magnetic field from multi-frequency polarimetric observations of the diffuse Galactic synchrotron background. A single-cell-size model of the thin…

Astrophysics · Physics 2009-11-10 M. Haverkorn , P. Katgert , A. G. de Bruyn

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

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