First Results from BISTRO: A SCUBA-2 Polarimeter Survey of the Gould Belt
Authors: Ward-Thompson Derek , Pattle Kate , Bastien Pierre , Furuya Ray S. , Kwon Woojin , Lai Shih-Ping , Qiu Keping , Berry David , Choi Minho , Coudé Simon , Francesco James Di , Hoang Thiem , Franzmann Erica , Friberg Per , Graves Sarah F. , Greaves Jane S. , Houde Martin , Johnstone Doug , Kirk Jason M. , Koch Patrick M. , Kwon Jungmi , Lee Chang Won , Li Di , Matthews Brenda C. , Mottram Joseph C. , Parsons Harriet , Pon Andy , Rao Ramprasad , Rawlings Mark , Shinnaga Hiroko , Sadavoy Sarah , Loo Sven van , Aso Yusuke , Byun Do-Young , Eswaraiah Chakali , Chen Huei-Ru , Chen Mike C.-Y. , Chen Wen Ping , Ching Tao-Chung , Cho Jungyeon , Chrysostomou Antonio , Chung Eun Jung , Doi Yasuo , Drabek-Maunder Emily , Eyres Stewart P. S. , Fiege Jason , Friesen Rachel K. , Fuller Gary , Gledhill Tim , Griffin Matt J. , Gu Qilao , Hasegawa Tetsuo , Hatchell Jennifer , Hayashi Saeko S. , Holland Wayne , Inoue Tsuyoshi , Inutsuka Shu-ichiro , Iwasaki Kazunari , Jeong Il-Gyo , Kang Ji-hyun , Kang Miju , Kang Sung-ju , Kawabata Koji S. , Kemper Francisca , Kim Gwanjeong , Kim Jongsoo , Kim Kee-Tae , Kim Kyoung Hee , Kim Mi-Ryang , Kim Shinyoung , Lacaille Kevin M. , Lee Jeong-Eun , Lee Sang-Sung , Li Dalei , Li Hua-bai , Liu Hong-Li , Liu Junhao , Liu Sheng-Yuan , Liu Tie , Lyo A-Ran , Mairs Steve , Matsumura Masafumi , Moriarty-Schieven Gerald H. , Nakamura Fumitaka , Nakanishi Hiroyuki , Ohashi Nagayoshi , Onaka Takashi , Peretto Nicolas , Pyo Tae-Soo , Qian Lei , Retter Brendan , Richer John , Rigby Andrew , Robitaille Jean-François , Savini Giorgio , Scaife Anna M. M. , Soam Archana , Tamura Motohide , Tang Ya-Wen , Tomisaka Kohji , Wang Hongchi , Wang Jia-Wei , Whitworth Anthony P. , Yen Hsi-Wei , Yoo Hyunju , Yuan Jinghua , Zhang Chuan-Peng , Zhang Guoyin , Zhou Jianjun , Zhu Lei , André Philippe , Dowell C. Darren , Falle Sam , Tsukamoto Yusuke 
Published: June 2017

Abstract
We present the first results from the B-fields In STar-forming Region Observations (BISTRO) survey, using the Sub-millimetre Common-User Bolometer Array 2 camera, with its associated polarimeter (POL-2), on the James Clerk Maxwell Telescope in Hawaii. We discuss the survey’s aims and objectives. We describe the rationale behind the survey, and the questions that the survey will aim to answer. The most important of these is the role of magnetic fields in the star formation process on the scale of individual filaments and cores in dense regions. We describe the data acquisition and reduction processes for POL-2, demonstrating both repeatability and consistency with previous data. We present a first-look analysis of the first results from the BISTRO survey in the OMC 1 region. We see that the magnetic field lies approximately perpendicular to the famous “integral filament” in the densest regions of that filament. Furthermore, we see an “hourglass” magnetic field morphology extending beyond the densest region of the integral filament into the less-dense surrounding material, and discuss possible causes for this. We also discuss the more complex morphology seen along the Orion Bar region. We examine the morphology of the field along the lower-density northeastern filament. We find consistency with previous theoretical models that predict magnetic fields lying parallel to low-density, non-self-gravitating filaments, and perpendicular to higher-density, self-gravitating filaments.