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1. A Tale of Three: Magnetic Fields along the Orion Integral-Shaped Filament as Revealed by JCMT BISTRO survey

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

As part of the BISTRO survey, we present JCMT 850 $\mu$m polarimetric observations towards the Orion Integral-Shaped Filament (ISF) that covers three portions known as OMC-1, OMC-2, and OMC-3. The magnetic field threading the ISF seen in the JCMT POL-2 map appears as a tale of three: pinched for OMC-1, twisted for OMC-2, and nearly uniform for OMC-3. A multi-scale analysis shows that the magnetic field structure in OMC-3 is very consistent at all the scales, whereas the field structure in OMC-2 shows no correlation across different scales. In OMC-1, the field retains its mean orientation from large to small scales, but shows some deviations at small scales. Histograms of relative orientations between the magnetic field and filaments reveal a bimodal distribution for OMC-1, a relatively random distribution for OMC-2, and a distribution with a predominant peak at 90$^\circ$ for OMC-3. Furthermore, the magnetic fields in OMC-1 and OMC-3 both appear to be aligned perpendicular to the fibers, which are denser structures within the filament, but the field in OMC-2 is aligned along with the fibers. All these suggest that gravity, turbulence, and magnetic field are each playing a leading role in OMC-1, 2, and 3, respectively. While OMC-2 and 3 have almost the same gas mass, density, and non-thermal velocity dispersion, there are on average younger and fewer young stellar objects in OMC-3, providing evidence that a stronger magnetic field will induce slower and less efficient star formation in molecular clouds., Comment: published in the ApJ Letters

Published
2024
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2. Filamentary Network and Magnetic Field Structures Revealed with BISTRO in the High-Mass Star-Forming Region NGC2264 : Global Properties and Local Magnetogravitational Configurations

Author

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

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

We report 850 $\mu$m continuum polarization observations toward the filamentary high-mass star-forming region NGC 2264, taken as part of the B-fields In STar forming Regions Observations (BISTRO) large program on the James Clerk Maxwell Telescope (JCMT). These data reveal a well-structured non-uniform magnetic field in the NGC 2264C and 2264D regions with a prevailing orientation around 30 deg from north to east. Field strengths estimates and a virial analysis for the major clumps indicate that NGC 2264C is globally dominated by gravity while in 2264D magnetic, gravitational, and kinetic energies are roughly balanced. We present an analysis scheme that utilizes the locally resolved magnetic field structures, together with the locally measured gravitational vector field and the extracted filamentary network. From this, we infer statistical trends showing that this network consists of two main groups of filaments oriented approximately perpendicular to one another. Additionally, gravity shows one dominating converging direction that is roughly perpendicular to one of the filament orientations, which is suggestive of mass accretion along this direction. Beyond these statistical trends, we identify two types of filaments. The type-I filament is perpendicular to the magnetic field with local gravity transitioning from parallel to perpendicular to the magnetic field from the outside to the filament ridge. The type-II filament is parallel to the magnetic field and local gravity. We interpret these two types of filaments as originating from the competition between radial collapsing, driven by filament self-gravity, and the longitudinal collapsing, driven by the region's global gravity., Comment: Accepted for publication in the Astrophysical Journal. 43 pages, 32 figures, and 4 tables (including Appendix)

Published
2024

4. The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present observations of polarized dust emission at 850 $\mu$m from the L43 molecular cloud which sits in the Ophiuchus cloud complex. The data were taken using SCUBA-2/POL-2 on the James Clerk Maxwell Telescope as a part of the BISTRO large program. L43 is a dense ($N_{\rm H_2}\sim 10^{22}$-10$^{23}$ cm$^{-2}$) complex molecular cloud with a submillimetre-bright starless core and two protostellar sources. There appears to be an evolutionary gradient along the isolated filament that L43 is embedded within, with the most evolved source closest to the Sco OB2 association. One of the protostars drives a CO outflow that has created a cavity to the southeast. We see a magnetic field that appears to be aligned with the cavity walls of the outflow, suggesting interaction with the outflow. We also find a magnetic field strength of up to $\sim$160$\pm$30 $\mu$G in the main starless core and up to $\sim$90$\pm$40 $\mu$G in the more diffuse, extended region. These field strengths give magnetically super- and sub-critical values respectively and both are found to be roughly trans-Alfv\'enic. We also present a new method of data reduction for these denser but fainter objects like starless cores., Comment: Accepted for publication in ApJ. 23 pages, 9 figures (7 main text, 2 appendix)

Published
2023
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5. First BISTRO observations of the dark cloud Taurus L1495A-B10: the role of the magnetic field in the earliest stages of low-mass star formation

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

We present BISTRO Survey 850 {\mu}m dust emission polarisation observations of the L1495A-B10 region of the Taurus molecular cloud, taken at the JCMT. We observe a roughly triangular network of dense filaments. We detect 9 of the dense starless cores embedded within these filaments in polarisation, finding that the plane-of-sky orientation of the core-scale magnetic field lies roughly perpendicular to the filaments in almost all cases. We also find that the large-scale magnetic field orientation measured by Planck is not correlated with any of the core or filament structures, except in the case of the lowest-density core. We propose a scenario for early prestellar evolution that is both an extension to, and consistent with, previous models, introducing an additional evolutionary transitional stage between field-dominated and matter-dominated evolution, observed here for the first time. In this scenario, the cloud collapses first to a sheet-like structure. Uniquely, we appear to be seeing this sheet almost face-on. The sheet fragments into filaments, which in turn form cores. However, the material must reach a certain critical density before the evolution changes from being field-dominated to being matter-dominated. We measure the sheet surface density and the magnetic field strength at that transition for the first time and show consistency with an analytical prediction that had previously gone untested for over 50 years (Mestel 1965)., Comment: 14 pages, 5 figures. ApJ accepted

Published
2023
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6. JCMT BISTRO Observations: Magnetic Field Morphology of Bubbles Associated with NGC 6334

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We study the HII regions associated with the NGC 6334 molecular cloud observed in the sub-millimeter and taken as part of the B-fields In STar-forming Region Observations (BISTRO) Survey. In particular, we investigate the polarization patterns and magnetic field morphologies associated with these HII regions. Through polarization pattern and pressure calculation analyses, several of these bubbles indicate that the gas and magnetic field lines have been pushed away from the bubble, toward an almost tangential (to the bubble) magnetic field morphology. In the densest part of NGC 6334, where the magnetic field morphology is similar to an hourglass, the polarization observations do not exhibit observable impact from HII regions. We detect two nested radial polarization patterns in a bubble to the south of NGC 6334 that correspond to the previously observed bipolar structure in this bubble. Finally, using the results of this study, we present steps (incorporating computer vision; circular Hough Transform) that can be used in future studies to identify bubbles that have physically impacted magnetic field lines., Comment: Accepted for publication in Astrophysical Journal (ApJ)

Published
2022
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7. The JCMT BISTRO-2 Survey: Magnetic Fields of the Massive DR21 Filament

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

We present 850 $\mu$m dust polarization observations of the massive DR21 filament from the B-fields In STar-forming Region Observations (BISTRO) survey, using the POL-2 polarimeter and the SCUBA-2 camera on the James Clerk Maxwell Telescope. We detect ordered magnetic fields perpendicular to the parsec-scale ridge of the DR21 main filament. In the sub-filaments, the magnetic fields are mainly parallel to the filamentary structures and smoothly connect to the magnetic fields of the main filament. We compare the POL-2 and Planck dust polarization observations to study the magnetic field structures of the DR21 filament on 0.1--10 pc scales. The magnetic fields revealed in the Planck data are well aligned with those of the POL-2 data, indicating a smooth variation of magnetic fields from large to small scales. The plane-of-sky magnetic field strengths derived from angular dispersion functions of dust polarization are 0.6--1.0 mG in the DR21 filament and $\sim$ 0.1 mG in the surrounding ambient gas. The mass-to-flux ratios are found to be magnetically supercritical in the filament and slightly subcritical to nearly critical in the ambient gas. The alignment between column density structures and magnetic fields changes from random alignment in the low-density ambient gas probed by Planck to mostly perpendicular in the high-density main filament probed by JCMT. The magnetic field structures of the DR21 filament are in agreement with MHD simulations of a strongly magnetized medium, suggesting that magnetic fields play an important role in shaping the DR21 main filament and sub-filaments., Comment: 26 pages, 13 figures, ApJ accepted

Published
2022
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8. The JCMT BISTRO Survey: A Spiral Magnetic Field in a Hub-filament Structure, Monoceros R2

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present and analyze observations of polarized dust emission at 850 $\mu$m towards the central 1 pc $\times$ 1 pc hub-filament structure of Monoceros R2 (Mon R2). The data are obtained with SCUBA-2/POL-2 on the James Clerk Maxwell Telescope (JCMT) as part of the BISTRO (B-fields in Star-forming Region Observations) survey. The orientations of the magnetic field follow the spiral structure of Mon R2, which are well-described by an axisymmetric magnetic field model. We estimate the turbulent component of the magnetic field using the angle difference between our observations and the best-fit model of the underlying large-scale mean magnetic field. This estimate is used to calculate the magnetic field strength using the Davis-Chandrasekhar-Fermi method, for which we also obtain the distribution of volume density and velocity dispersion using a column density map derived from $Herschel$ data and the C$^{18}$O ($J$ = 3-2) data taken with HARP on the JCMT, respectively. We make maps of magnetic field strengths and mass-to-flux ratios, finding that magnetic field strengths vary from 0.02 to 3.64 mG with a mean value of 1.0 $\pm$ 0.06 mG, and the mean critical mass-to-flux ratio is 0.47 $\pm$ 0.02. Additionally, the mean Alfv\'en Mach number is 0.35 $\pm$ 0.01. This suggests that in Mon R2, magnetic fields provide resistance against large-scale gravitational collapse, and magnetic pressure exceeds turbulent pressure. We also investigate the properties of each filament in Mon R2. Most of the filaments are aligned along the magnetic field direction and are magnetically sub-critical., Comment: This paper is accepted to the ApJ

Published
2022
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9. The signature of large scale turbulence driving on the structure of the interstellar medium

Author

Colman, Tine, Robitaille, Jean-François, Hennebelle, Patrick, Miville-Deschênes, Marc-Antoine, Brucy, Noé, Klessen, Ralf S., Glover, Simon C. O., Soler, Juan D., Elia, Davide, Traficante, Alessio, Molinari, Sergio, and Testi, Leonardo

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

The mechanisms that maintain turbulence in the interstellar medium (ISM) are still not identified. This work investigates how we can distinguish between two fundamental driving mechanisms: the accumulated effect of stellar feedback versus the energy injection from Galactic scales. We perform a series of numerical simulations describing a stratified star forming ISM subject to self-consistent stellar feedback. Large scale external turbulent driving of various intensities is added to mimic galactic driving mechanisms. We analyse the resulting column density maps with a technique called Multi-scale non-Gaussian segmentation that separates the coherent structures and the Gaussian background. This effectively discriminates between the various simulations and is a promising method to understand the ISM structure. In particular the power spectrum of the coherent structures flattens above 60 pc when turbulence is driven only by stellar feedback. When large-scale driving is applied, the turn-over shifts to larger scales. A systematic comparison with the Large Magellanic Cloud (LMC) is then performed. Only 1 out of 25 regions has a coherent power spectrum which is consistent with the feedback-only simulation. A detailed study of the turn-over scale leads us to conclude that regular stellar feedback is not enough to explain the observed ISM structure on scales larger than 60 pc. Extreme feedback in the form of supergiant shells likely plays an important role but cannot explain all the regions of the LMC. If we assume ISM structure is generated by turbulence, another large scale driving mechanism is needed to explain the entirety of the observations., Comment: 15 pages, 11 figures, to be published in MNRAS

Published
2022
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10. B-fields in Star-Forming Region Observations (BISTRO): Magnetic Fields in the Filamentary Structures of Serpens Main

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

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) survey. These observations probe the magnetic field morphology of the Serpens Main molecular cloud on about 6000 au scales, which consists of cores and six filaments with different physical properties such as density and star formation activity. Using the histogram of relative orientation (HRO) technique, we find that magnetic fields are parallel to filaments in less dense filamentary structures where $N_{H_2} < 0.93\times 10^{22}$ cm$^{-2}$ (magnetic fields perpendicular to density gradients), while being perpendicular to filaments (magnetic fields parallel to density gradients) in dense filamentary structures with star formation activity. Moreover, applying the HRO technique to denser core regions, we find that magnetic field orientations change to become perpendicular to density gradients again at $N_{H_2} \approx 4.6 \times 10^{22}$ cm$^{-2}$. This can be interpreted as a signature of core formation. At $N_{H_2} \approx 16 \times 10^{22}$ cm$^{-2}$ magnetic fields change back to being parallel to density gradients once again, which can be understood to be due to magnetic fields being dragged in by infalling material. In addition, we estimate the magnetic field strengths of the filaments ($B_{POS} = 60-300~\mu$G)) using the Davis-Chandrasekhar-Fermi method and discuss whether the filaments are gravitationally unstable based on magnetic field and turbulence energy densities., Comment: 18 pages, accepted for publication in ApJ

Published
2022
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11. Organized Civic and Non-Civic Activities as Predictors of Academic GPA in High School Students

Author

Philippe, Frederick L., Gingras, Marie-Pier, Ghassemi-Bakhtiari, Nessa, Poulin, François, Robitaille, Jean, Denault, Anne-Sophie, Dandeneau, Stéphane, and Geoffroy, Marie-Claude

Abstract

Unlike organized activities such as sports and arts, civic activities in adolescence (e.g., volunteering, student government) have been less studied in relation to school success and almost all existing evidence consists of cross-sectional findings. In a longitudinal study, 1035 pupils (64% females, 20% nonwhite, M[subscript age] = 14.21 years) from high schools reported their engagement in organized non-civic and civic activities during the school year, dimensions of activity participation (e.g., intensity, duration, motives), and covariables (age, gender, ethnicity, SES, self-esteem, parental relationship, school motivation). Previous and end-of-year grade point average (GPA) were collected from school administrations. Results revealed that both civic and non-civic organized activities independently predicted increases in GPA over the school year, even after adjusting for all covariables.

Published
2023
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12. The JCMT BISTRO-2 Survey: The Magnetic Field in the Center of the Rosette Molecular Cloud

Author

Könyves, Vera, Ward-Thompson, Derek, Pattle, Kate, Di Francesco, James, Arzoumanian, Doris, Chen, Zhiwei, Diep, Pham Ngoc, Eswaraiah, Chakali, Fanciullo, Lapo, Furuya, Ray S., Hoang, Thiem, Hull, Charles L. H., Hwang, Jihye, Johnstone, Doug, Kang, Ji-hyun, Karoly, Janik, Kirchschlager, Florian, Kirk, Jason M., Koch, Patrick M., Kwon, Jungmi, Lee, Chang Won, Onaka, Takashi, Robitaille, Jean-François, Soam, Archana, Tahani, Mehrnoosh, Tang, Xindi, Tamura, Motohide, Berry, David, Bastien, Pierre, Ching, Tao-Chung, Coudé, Simon, Kwon, Woojin, Wang, Jia-Wei, Hasegawa, Tetsuo, Lai, Shih-Ping, and Qiu, Keping

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

We present the first 850 $\mu$m polarization observations in the most active star-forming site of the Rosette Molecular Cloud (RMC, $d\sim$1.6 kpc) in the wall of the Rosette Nebula, imaged with the SCUBA-2/POL-2 instruments of the JCMT, as part of the B-Fields In Star-Forming Region Observations 2 (BISTRO-2) survey. From the POL-2 data we find that the polarization fraction decreases with the 850 $\mu$m continuum intensity with $\alpha$ = 0.49 $\pm$ 0.08 in the $p \propto I^{\rm -\alpha}$ relation, which suggests that some fraction of the dust grains remain aligned at high densities. The north of our 850 $\mu$m image reveals a "gemstone ring" morphology, which is a $\sim$1 pc-diameter ring-like structure with extended emission in the "head" to the south-west. We hypothesize that it might have been blown by feedback in its interior, while the B-field is parallel to its circumference in most places. In the south of our SCUBA-2 field the clumps are apparently connected with filaments which follow Infrared Dark Clouds (IRDCs). Here, the POL-2 magnetic field orientations appear bimodal with respect to the large-scale Planck field. The mass of our effective mapped area is $\sim$ 174 $M_\odot$ that we calculate from 850 $\mu$m flux densities. We compare our results with masses from large-scale emission-subtracted Herschel 250 $\mu$m data, and find agreement within 30%. We estimate the POS B-field strength in one typical subregion using the Davis-Chandrasekhar-Fermi (DCF) technique and find 80 $\pm$ 30 $\mu$G toward a clump and its outskirts. The estimated mass-to-flux ratio of $\lambda$ = 2.3 $\pm$ 1.0 suggests that the B-field is not sufficiently strong to prevent gravitational collapse in this subregion., Comment: 15 pages (12+3), 9 figures, 1 table. Accepted for publication in the Astrophysical Journal

Published
2021
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13. Revealing the diverse magnetic field morphologies in Taurus dense cores with sensitive sub-millimeter polarimetry

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

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 Observations) survey. These observations allow us to probe magnetic field (B-field) at high spatial resolution ($\sim$2000 au or $\sim$0.01 pc at 140 pc) in two protostellar cores (K04166 and K04169) and one prestellar core (Miz-8b) that lie within the B213 filament. Using the Davis-Chandrasekhar-Fermi method, we estimate the B-field strengths in K04166, K04169, and Miz-8b to be 38$\pm$14 $\mu$G, 44$\pm$16 $\mu$G, and 12$\pm$5 $\mu$G, respectively. These cores show distinct mean B-field orientations. B-field in K04166 is well ordered and aligned parallel to the orientations of the core minor axis, outflows, core rotation axis, and large-scale uniform B-field, in accordance with magnetically regulated star formation via ambipolar diffusion taking place in K04166. B-field in K04169 is found to be ordered but oriented nearly perpendicular to the core minor axis and large-scale B-field, and not well-correlated with other axes. In contrast, Miz-8b exhibits disordered B-field which show no preferred alignment with the core minor axis or large-scale field. We found that only one core, K04166, retains a memory of the large-scale uniform B-field. The other two cores, K04169 and Miz-8b, are decoupled from the large-scale field. Such a complex B-field configuration could be caused by gas inflow onto the filament, even in the presence of a substantial magnetic flux., Comment: 20 pages (10 are main), 5 figures (3 are main), and 3 tables (2 are main); Accepted for its publication in ApJL

Published
2021
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14. Observations of magnetic fields surrounding LkH$\alpha$ 101 taken by the BISTRO survey with JCMT-POL-2

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

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 Telescope within the framework of the B-fields In Star-forming Region Observations (BISTRO) survey. Observed polarization of thermal dust emission at 850 $\mu$m is found to be mostly associated with the red-shifted gas component of the cloud. The magnetic field displays a relatively complex morphology. Two variants of the Davis-Chandrasekhar-Fermi method, unsharp masking and structure function, are used to calculate the strength of magnetic fields in the plane of the sky, yielding a similar result of $B_{\rm POS}\sim 115$ $\mathrm{\mu}$G. The mass-to-magnetic-flux ratio in critical value units, $\lambda\sim0.3$, is the smallest among the values obtained for other regions surveyed by POL-2. This implies that the LkH$\alpha$ 101 region is sub-critical and the magnetic field is strong enough to prevent gravitational collapse. The inferred $\delta B/B_0\sim 0.3$ implies that the large scale component of the magnetic field dominates the turbulent one. The variation of the polarization fraction with total emission intensity can be fitted by a power-law with an index of $\alpha=0.82\pm0.03$, which lies in the range previously reported for molecular clouds. We find that the polarization fraction decreases rapidly with proximity to the only early B star (LkH$\alpha$ 101) in the region. The magnetic field tangling and the joint effect of grain alignment and rotational disruption by radiative torques are potential of explaining such a decreasing trend., Comment: 25 pages, 19 figures, Accepted for publication in The Astrophysical Journal

Published
2020
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15. Statistical model for filamentary structures of molecular clouds -- The modified multiplicative random cascade model and its multifractal nature

Author

Robitaille, Jean-François, Abdeldayem, Abdelhalim, Joncour, Isabelle, Moraux, Estelle, Motte, Frédérique, Lesaffre, Pierre, and Khalil, André

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We propose a new statistical model that can reproduce the hierarchical nature of the ubiquitous filamentary structures of molecular clouds. This model is based on the multiplicative random cascade, which is designed to replicate the multifractal nature of intermittency in developed turbulence. We present a modified version of the multiplicative process where the spatial fluctuations as a function of scales are produced with the wavelet transforms of a fractional Brownian motion realisation. This simple approach produces naturally a log-normal distribution function and hierarchical coherent structures. Despite the highly contrasted aspect of these coherent structures against a smoother background, their Fourier power spectrum can be fitted by a single power law. As reported in previous works using the multiscale non-Gaussian segmentation (MnGSeg) technique, it is proven that the fit of a single power law reflects the inability of the Fourier power spectrum to detect the progressive non-Gaussian contributions that are at the origin of these structures across the inertial range of the power spectrum. The mutifractal nature of these coherent structures is discussed, and an extension of the MnGSeg technique is proposed to calculate the multifractal spectrum that is associated with them. Using directional wavelets, we show that filamentary structures can easily be produced without changing the general shape of the power spectrum. The cumulative effect of random multiplicative sequences succeeds in producing the general aspect of filamentary structures similar to those associated with star-forming regions. The filamentary structures are formed through the product of a large number of random-phase linear waves at different spatial wavelengths. Dynamically, this effect might be associated with the collection of compressive processes that occur in the interstellar medium., Comment: 11 pages, 8 figures, accepted on 30/06/2020

Published
2020
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16. The JCMT BISTRO Survey: Magnetic Fields Associated with a Network of Filaments in NGC 1333

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present new observations of the active star-formation region NGC 1333 in the Perseus molecular cloud complex from the James Clerk Maxwell Telescope B-Fields In Star-forming Region Observations (BISTRO) survey with the POL-2 instrument. The BISTRO data cover the entire NGC 1333 complex (~1.5 pc x 2 pc) at 0.02 pc resolution and spatially resolve the polarized emission from individual filamentary structures for the first time. The inferred magnetic field structure is complex as a whole, with each individual filament aligned at different position angles relative to the local field orientation. We combine the BISTRO data with low- and high- resolution data derived from Planck and interferometers to study the multiscale magnetic field structure in this region. The magnetic field morphology drastically changes below a scale of ~1 pc and remains continuous from the scales of filaments (~0.1 pc) to that of protostellar envelopes (~0.005 pc or ~1000 au). Finally, we construct simple models in which we assume that the magnetic field is always perpendicular to the long axis of the filaments. We demonstrate that the observed variation of the relative orientation between the filament axes and the magnetic field angles are well reproduced by this model, taking into account the projection effects of the magnetic field and filaments relative to the plane of the sky. These projection effects may explain the apparent complexity of the magnetic field structure observed at the resolution of BISTRO data toward the filament network., Comment: 33 pages, 21 figures, accepted for publication in ApJ

Published
2020
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17. The JCMT BISTRO Survey: The Magnetic Field of the Barnard 1 Star-Forming Region

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

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 trend of decreasing polarization fraction as a function of total intensity, which we link to depolarization effects towards higher density regions of the cloud. We then use the polarization data at 850 $\mu$m to infer the plane-of-sky orientation of the large-scale magnetic field in Barnard 1. This magnetic field runs North-South across most of the cloud, with the exception of B1-c where it turns more East-West. From the dispersion of polarization angles, we calculate a turbulence correlation length of $5.0 \pm 2.5$ arcsec ($1500$ au), and a turbulent-to-total magnetic energy ratio of $0.5 \pm 0.3$ inside the cloud. We combine this turbulent-to-total magnetic energy ratio with observations of NH$_3$ molecular lines from the Green Bank Ammonia Survey (GAS) to estimate the strength of the plane-of-sky component of the magnetic field through the Davis-Chandrasekhar-Fermi method. With a plane-of-sky amplitude of $120 \pm 60$ $\mu$G and a criticality criterion $\lambda_c = 3.0 \pm 1.5$, we find that Barnard 1 is a supercritical molecular cloud with a magnetic field nearly dominated by its turbulent component., Comment: 22 pages, 7 figures, accepted in the Astrophysical Journal

Published
2019
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18. The JCMT BISTRO Survey: The Magnetic Field In The Starless Core $\rho$ Ophiuchus C

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

We report 850~$\mu$m dust polarization observations of a low-mass ($\sim$12 $M_{\odot}$) starless core in the $\rho$ Ophiuchus cloud, Ophiuchus C, made with the POL-2 instrument on the James Clerk Maxwell Telescope (JCMT) as part of the JCMT B-fields In STar-forming Region Observations (BISTRO) survey. We detect an ordered magnetic field projected on the plane of sky in the starless core. The magnetic field across the $\sim$0.1~pc core shows a predominant northeast-southwest orientation centering between $\sim$40$^\circ$ to $\sim$100$^\circ$, indicating that the field in the core is well aligned with the magnetic field in lower-density regions of the cloud probed by near-infrared observations and also the cloud-scale magnetic field traced by Planck observations. The polarization percentage ($P$) decreases with an increasing total intensity ($I$) with a power-law index of $-$1.03 $\pm$ 0.05. We estimate the plane-of-sky field strength ($B_{\mathrm{pos}}$) using modified Davis-Chandrasekhar-Fermi (DCF) methods based on structure function (SF), auto-correlation (ACF), and unsharp masking (UM) analyses. We find that the estimates from the SF, ACF, and UM methods yield strengths of 103 $\pm$ 46 $\mu$G, 136 $\pm$ 69 $\mu$G, and 213 $\pm$ 115 $\mu$G, respectively. Our calculations suggest that the Ophiuchus C core is near magnetically critical or slightly magnetically supercritical (i.e. unstable to collapse). The total magnetic energy calculated from the SF method is comparable to the turbulent energy in Ophiuchus C, while the ACF method and the UM method only set upper limits for the total magnetic energy because of large uncertainties., Comment: 22 pages, 12 figures

Published
2019
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19. JCMT BISTRO survey: Magnetic Fields within the Hub-Filament Structure in IC 5146

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

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 Telescope (JCMT), as part of the B-fields In STar forming Regions Observations (BISTRO). This work is aimed at revealing the magnetic field morphology within a core-scale ($\lesssim 1.0$ pc) hub-filament structure (HFS) located at the end of a parsec-scale filament. To investigate whether or not the observed polarization traces the magnetic field in the HFS, we analyze the dependence between the observed polarization fraction and total intensity using a Bayesian approach with the polarization fraction described by the Rice likelihood function, which can correctly describe the probability density function (PDF) of the observed polarization fraction for low signal-to-noise ratio (SNR) data. We find a power-law dependence between the polarization fraction and total intensity with an index of 0.56 in $A_V\sim$ 20--300 mag regions, suggesting that the dust grains in these dense regions can still be aligned with magnetic fields in the IC5146 regions. Our polarization maps reveal a curved magnetic field, possibly dragged by the contraction along the parsec-scale filament. We further obtain a magnetic field strength of 0.5$\pm$0.2 mG toward the central hub using the Davis-Chandrasekhar-Fermi method, corresponding to a mass-to-flux criticality of $\sim$ $1.3\pm0.4$ and an Alfv\'{e}nic Mach number of $<$0.6. These results suggest that gravity and magnetic field is currently of comparable importance in the HFS, and turbulence is less important., Comment: 24 pages, 15 figures, accepted for publication in ApJ

Published
2018
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20. A First Look at BISTRO Observations of The $\rho$ Oph-A core

Author

Kwon, Jungmi, Doi, Yasuo, Tamura, Motohide, Matsumura, Masafumi, Pattle, Kate, Berry, David, Sadavoy, Sarah, Matthews, Brenda C., Ward-Thompson, Derek, Hasegawa, Tetsuo, Furuya, Ray S., Pon, Andy, Di Francesco, James, Arzoumanian, Doris, Hayashi, Saeko S., Kawabata, Koji S., Onaka, Takashi, Choi, Minho, Kang, Miju, Hoang, Thiem, Lee, Chang Won, Lee, Sang-Sung, Liu, Hong-Li, Liu, Tie, Inutsuka, Shu-Ichiro, Eswaraiah, Chakali, Bastien, Pierre, Kwon, Woojin, Lai, Shih-Ping, Qiu, Keping, Coude, Simon, Franzmann, Erica, Friberg, Per, Graves, Sarah F., Greaves, Jane S., Houde, Martin, Johnstone, Doug, Kirk, Jason M., Koch, Patrick M., Li, Di, Parsons, Harriet, Rao, Ramprasad, Rawlings, Mark, Shinnaga, Hiroko, Van Loo, Sven, Aso, Yusuke, Byun, Do-Young, Chen, Huei-Ru, Chen, Mike C. -Y., Chen, Wen Ping, Ching, Tao-Chung, Cho, Jungyeon, Chrysostomou, Antonio, Chung, Eun Jung, Drabek-Maunder, Emily, Eyres, Stewart P. S., Fiege, Jason, Friesen, Rachel K., Fuller, Gary, Gledhill, Tim, Griffin, Matt J., Gu, Qilao, Hatchell, Jennifer, Holland, Wayne, Inoue, Tsuyoshi, Iwasaki, Kazunari, Jeong, Il-Gyo, Kang, Ji-Hyun, Kang, Sung-Ju, Kemper, Francisca, Kim, Gwanjeong, Kim, Jongsoo, Kim, Kee-Tae, Kim, Kyoung Hee, Kim, Mi-Ryang, Kim, Shinyoung, Lacaille, Kevin M., Lee, Jeong-Eun, Li, Dalei, Li, Hua-Bai, Liu, Junhao, Liu, Sheng-Yuan, Lyo, A-Ran, Mairs, Steve, Moriarty-Schieven, Gerald H., Nakamura, Fumitaka, Nakanishi, Hiroyuki, Ohashi, Nagayoshi, Peretto, Nicolas, Pyo, Tae-Soo, Qian, Lei, Retter, Brendan, Richer, John, Rigby, Andrew, Robitaille, Jean-Franois, Savini, Giorgio, Scaife, Anna M. M., Soam, Archana, 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, Andre, Philippe, Dowell, C. Darren, Falle, Sam, Tsukamoto, Yusuke, Nakagawa, Takao, Kanamori, Yoshihiro, Kataoka, Akimasa, Kobayashi, Masato I. N., Nagata, Tetsuya, Saito, Hiro, Seta, Masumichi, and Zenko, Tetsuya

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present 850 $\mu$m imaging polarimetry data of the $\rho$ Oph-A core taken with the Submillimeter Common-User Bolometer Array-2 (SCUBA-2) and its polarimeter (POL-2), as part of our ongoing survey project, BISTRO (B-fields In STar forming RegiOns). The polarization vectors are used to identify the orientation of the magnetic field projected on the plane of the sky at a resolution of 0.01 pc. We identify 10 subregions with distinct polarization fractions and angles in the 0.2 pc $\rho$ Oph A core; some of them can be part of a coherent magnetic field structure in the $\rho$ Oph region. The results are consistent with previous observations of the brightest regions of $\rho$ Oph-A, where the degrees of polarization are at a level of a few percents, but our data reveal for the first time the magnetic field structures in the fainter regions surrounding the core where the degree of polarization is much higher ($> 5 \%$). A comparison with previous near-infrared polarimetric data shows that there are several magnetic field components which are consistent at near-infrared and submillimeter wavelengths. Using the Davis-Chandrasekhar-Fermi method, we also derive magnetic field strengths in several sub-core regions, which range from approximately 0.2 to 5 mG. We also find a correlation between the magnetic field orientations projected on the sky with the core centroid velocity components., Comment: 22 pages, 11 figures, accepted for publication in ApJ

Published
2018
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21. First results from BISTRO -- a SCUBA-2 polarimeter survey of the Gould Belt

Author

Ward-Thompson, Derek, Pattle, Kate, Bastien, Pierre, Furuya, Ray S., Kwon, Woojin, Lai, Shih-Ping, Qiu, Keping, Berry, David, Choi, Minho, Coudé, Simon, Di Francesco, James, 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, van Loo, Sven, Aso, Yusuke, Byun, Do-Young, Chakali, Eswariah, 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, and Tsukamoto, Yusuke

Subjects
Astrophysics - Astrophysics of Galaxies
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 (SCUBA-2) camera, with its associated polarimeter (POL-2), on the James Clerk Maxwell Telescope (JCMT) in Hawaii. We discuss the survey's aims and objectives. We describe the rationale behind the survey, and the questions which 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 'hour-glass' 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 north-eastern 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., Comment: 12 pages, 8 figures, accepted for publication in ApJ

Published
2017
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23. Filamentary Network and Magnetic Field Structures Revealed with BISTRO in the High-mass Star-forming Region NGC 2264: Global Properties and Local Magnetogravitational Configurations

Author

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

Published
2024
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24. The effects of aging of scientists on their publication and citation patterns

Author

Gingras, Yves, Lariviere, Vincent, Macaluso, Benoit, and Robitaille, Jean-Pierre

Subjects
Physics - Physics and Society
Abstract

The average age at which U.S. researchers get their first grant from NIH has increased from 34.3 in 1970, to 41.7 in 2004. These data raise the crucial question of the effects of aging on the scientific creativity and productivity of researchers. Those who worry about the aging of scientists usually believe that the younger they are the more creative and productive they will be. Using a large population of 13,680 university professors in Quebec, we show that, while scientific productivity rises sharply between 28 and 40, it increases at a slower pace between 41 and 50 and stabilizes afterward until retirement for the most active researchers. The average scientific impact per paper decreases linearly until 50-55 years old, but the average number of papers in highly cited journals and among highly cited papers rises continuously until retirement. Our results clearly show for the first time the natural history of the scientific productivity of scientists over their entire career and bring to light the fact that researchers over 55 still contribute significantly to the scientific community by producing high impact papers., Comment: 12 pages, 4 figures

Published
2008
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27. The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43

Author

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

Published
2023
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29. JCMT BISTRO Observations: Magnetic Field Morphology of Bubbles Associated with NGC 6334

Author

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

Abstract

We study the HII regions associated with the NGC 6334 molecular cloud observed in the sub-millimeter and taken as part of the B-fields In STar-forming Region Observations (BISTRO) Survey. In particular, we investigate the polarization patterns and magnetic field morphologies associated with these HII regions. Through polarization pattern and pressure calculation analyses, several of these bubbles indicate that the gas and magnetic field lines have been pushed away from the bubble, toward an almost tangential (to the bubble) magnetic field morphology. In the densest part of NGC 6334, where the magnetic field morphology is similar to an hourglass, the polarization observations do not exhibit observable impact from HII regions. We detect two nested radial polarization patterns in a bubble to the south of NGC 6334 that correspond to the previously observed bipolar structure in this bubble. Finally, using the results of this study, we present steps (incorporating computer vision; circular Hough Transform) that can be used in future studies to identify bubbles that have physically impacted magnetic field lines.

Published
2023

30. First BISTRO Observations of the Dark Cloud Taurus L1495A-B10: The Role of the Magnetic Field in the Earliest Stages of Low-mass Star Formation

Author

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

Published
2023
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31. JCMT BISTRO Observations: Magnetic Field Morphology of Bubbles Associated with NGC 6334

Author

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

Published
2023
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33. The JCMT BISTRO-2 Survey: Magnetic Fields of the Massive DR21 Filament

Author

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

Published
2022
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34. The JCMT BISTRO Survey: A Spiral Magnetic Field in a Hub-filament Structure, Monoceros R2

Author

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

Published
2022
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36. Bibliometrics as a Performance Measurement Tool for Research Evaluation: The Case of Research Funded by the National Cancer Institute of Canada

Author

Campbell, David, Picard-Aitken, Michelle, Cote, Gregoire, Caruso, Julie, Valentim, Rodolfo, Edmonds, Stuart, Williams, Gregory Thomas, Macaluso, Benoit, Robitaille, Jean-Pierre, Bastien, Nicolas, Laframboise, Marie-Claude, Lebeau, Louis-Michel, Mirabel, Philippe, Lariviere, Vincent, and Archambault, Eric

Abstract

As bibliometric indicators are objective, reliable, and cost-effective measures of peer-reviewed research outputs, they are expected to play an increasingly important role in research assessment/management. Recently, a bibliometric approach was developed and integrated within the evaluation framework of research funded by the National Cancer Institute of Canada (NCIC). This approach helped address the following questions that were difficult to answer objectively using alternative methods such as program documentation review and key informant interviews: (a) Has the NCIC peer-review process selected outstanding Canadian scientists in cancer research? (b) Have the NCIC grants contributed to increasing the scientific performance of supported researchers? (c) How do the NCIC-supported researchers compare to their neighbors supported by the U.S. National Cancer Institute? Using the NCIC evaluation as a case study, this article demonstrates the usefulness of bibliometrics to address key evaluation questions and discusses its integration, along complementary indicators (e.g., peer ratings), in a practice-driven research evaluation continuum. (Contains 6 figures and 1 note.)

Published
2010
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38. The signature of large-scale turbulence driving on the structure of the interstellar medium

Author

Colman, Tine, primary, Robitaille, Jean-François, additional, Hennebelle, Patrick, additional, Miville-Deschênes, Marc-Antoine, additional, Brucy, Noé, additional, Klessen, Ralf S, additional, Glover, Simon C O, additional, Soler, Juan D, additional, Elia, Davide, additional, Traficante, Alessio, additional, Molinari, Sergio, additional, and Testi, Leonardo, additional

Published
2022
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40. Organized civic and non-civic activities as predictors of academic GPA in high school students

Author

Philippe, Frederick, Denault, Anne-Sophie, Gingras, Marie-Pier, Robitaille, Jean, Ghassemi-Bakhtiari, Nessa, Poulina, François, Dandeneau, Stéphane, Geoffroy, Marie-Claude, Philippe, Frederick, Denault, Anne-Sophie, Gingras, Marie-Pier, Robitaille, Jean, Ghassemi-Bakhtiari, Nessa, Poulina, François, Dandeneau, Stéphane, and Geoffroy, Marie-Claude

Abstract

Unlike organized activities such as sports and arts, civic activities in adolescence (e.g., volunteering, student government) have been less studied in relation to school success and almost all existing evidence consists of cross-sectional findings. In a longitudinal study, 1035 pupils (64% females, 20% nonwhite, Mage = 14.21 years) from high schools reported their engagement in organized non-civic and civic activities during the school year, dimensions of activity participation (e.g., intensity, duration, motives), and covariables (age, gender, ethnicity, SES, self-esteem, parental relationship, school motivation). Previous and end-of-year grade point average (GPA) were collected from school administrations. Results revealed that both civic and non-civic organized activities independently predicted increases in GPA over the school year, even after adjusting for all covariables.

Published
2022

41. B-fields in Star-forming Region Observations (BISTRO): Magnetic Fields in the Filamentary Structures of Serpens Main

Author

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

Published
2022
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45. The JCMT BISTRO Survey: An 850/450 μm Polarization Study of NGC 2071IR in Orion B

Author

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

Published
2021
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46. Description of turbulent dynamics in the interstellar medium: Multifractal-microcanonical analysis: I. Application to Herschel observations of the Musca filament

Author

Yahia, Hussein, Schneider, Nicola, Bontemps, Sylvain, Bonne, Lars, Attuel, Guillaume, Dib, Sami, Ossenkopf, Volker, Turiel, Antonio, Zebadua, Augusto, Elia, Davide, Maji, Suman Kumar, Schmitt, François G, Robitaille, Jean-François, Geometry and Statistics in acquisition data (GeoStat), Inria Bordeaux - Sud-Ouest, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), I. Physikalisches Institut [Köln], Universität zu Köln = University of Cologne, FEMIS 2021, Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Physikalisches Institut [Köln], Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] (ICM), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Istituto Nazionale di Astrofisica (INAF), Indian Institute of Technology Patna (IITP), Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG), Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Nord]), Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales [Toulouse] (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France -Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, This work is supported by the GENESIS project (GENeration and Evolution of Structure in the ISm), via the french ANR and the german DFG through grant numbers ANR-16-CE92-0035-01 and DFG1591/2-1. N. Schneider acknowledges support by the German Deutsche Forschungsgemeinschaft, DFG project number SFB 956. L. Bonne acknowledges support by the Région Nouvelle-Aquitaine, France., ANR-16-CE92-0035,GENESIS,GENeration et Evolution des Structures du milieu InterStellaire(2016), Universität zu Köln, Centre National de la Recherche Scientifique (CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut national des sciences de l'Univers (INSU - CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA), Université du Littoral Côte d'Opale (ULCO), Université de Lille, Université Grenoble-Alpes, IPAG, PCMI, and PNPS

Subjects
Turbulence, ISM: individual objects: Musca, Magnetohydrodynamics, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, ISM: structure, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, ISM: clouds
Abstract

International audience; Observations of the interstellar medium (ISM) show a complex density and velocity structure, which is in part attributed to turbulence. Consequently, the multifractal formalism should be applied to observation maps of the ISM in order to characterize its turbulent and multiplicative cascade properties. However, the multifractal formalism, even in its more advanced and recent canonical versions, requires a large number of realizations of the system, which usually cannot be obtained in astronomy. We present a self-contained introduction to the multifractal formalism in a "microcanonical" version, which allows us, for the first time, to compute precise turbulence characteristic parameters from a single observational map without the need for averages in a grand ensemble of statistical observables (e.g., a temporal sequence of images). We compute the singularity exponents and the singularity spectrum for both observations and magnetohydrodynamic simulations, which include key parameters to describe turbulence in the ISM. For the observations we focus on the 250 µm Herschel map of the Musca filament. Scaling properties are investigated using spatial 2D structure functions, and we apply a two-point log-correlation magnitude analysis over various lines of the spatial observation, which is known to be directly related to the existence of a multiplicative cascade under precise conditions. It reveals a clear signature of a multiplicative cascade in Musca with an inertial range from 0.05 to 0.65 pc. We show that the proposed microcanonical approach provides singularity spectra that are truly scale invariant, as required to validate any method used to analyze multifractality. The obtained singularity spectrum of Musca, which is sufficiently precise for the first time, is clearly not as symmetric as usually observed in log-normal behavior. We claim that the singularity spectrum of the ISM toward Musca features a more log-Poisson shape. Since log-Poisson behavior is claimed to exist when dissipation is stronger for rare events in turbulent flows, in contrast to more homogeneous (in volume and time) dissipation events, we suggest that this deviation from log-normality could trace enhanced dissipation in rare events at small scales, which may explain, or is at least consistent with, the dominant filamentary structure in Musca. Moreover, we find that subregions in Musca tend to show different multifractal properties: While a few regions can be described by a log-normal model, other regions have singularity spectra better fitted by a log-Poisson model. This strongly suggests that different types of dynamics exist inside the Musca cloud. We note that this deviation from log-normality and these differences between subregions appear only after reducing noise features, using a sparse edge-aware algorithm, which have the tendency to "log-normalize" an observational map. Implications for the star formation process are discussed. Our study establishes fundamental tools that will be applied to other galactic clouds and simulations in forthcoming studies.

Published
2021
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47. The JCMT BISTRO-2 Survey: The Magnetic Field in the Center of the Rosette Molecular Cloud

Author

Könyves, Vera, primary, Ward-Thompson, Derek, additional, Pattle, Kate, additional, Di Francesco, James, additional, Arzoumanian, Doris, additional, Chen, Zhiwei, additional, Diep, Pham Ngoc, additional, Eswaraiah, Chakali, additional, Fanciullo, Lapo, additional, Furuya, Ray S., additional, Hoang, Thiem, additional, Hull, Charles L. H., additional, Hwang, Jihye, additional, Johnstone, Doug, additional, Kang, Ji-hyun, additional, Karoly, Janik, additional, Kirchschlager, Florian, additional, Kirk, Jason M., additional, Koch, Patrick M., additional, Kwon, Jungmi, additional, Lee, Chang Won, additional, Onaka, Takashi, additional, Robitaille, Jean-François, additional, Soam, Archana, additional, Tahani, Mehrnoosh, additional, Tang, Xindi, additional, Tamura, Motohide, additional, Berry, David, additional, Bastien, Pierre, additional, Ching, Tao-Chung, additional, Coudé, Simon, additional, Kwon, Woojin, additional, Wang, Jia-Wei, additional, Hasegawa, Tetsuo, additional, Lai, Shih-Ping, additional, and Qiu, Keping, additional

Published
2021
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48. The JCMT BISTRO Survey: Revealing the Diverse Magnetic Field Morphologies in Taurus Dense Cores with Sensitive Submillimeter Polarimetry

Author

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

Published
2021
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49. signature of large-scale turbulence driving on the structure of the interstellar medium.

Author

Colman, Tine, Robitaille, Jean-François, Hennebelle, Patrick, Miville-Deschênes, Marc-Antoine, Brucy, Noé, Klessen, Ralf S, Glover, Simon C O, Soler, Juan D, Elia, Davide, Traficante, Alessio, Molinari, Sergio, and Testi, Leonardo

Subjects
LARGE magellanic cloud, TURBULENCE, INTERSTELLAR medium, POWER spectra, STELLAR structure
Abstract

The mechanisms that maintain turbulence in the interstellar medium (ISM) are still not identified. This work investigates how we can distinguish between two fundamental driving mechanisms: the accumulated effect of stellar feedback versus the energy injection from galactic scales. We perform a series of numerical simulations describing a stratified star-forming ISM subject to self-consistent stellar feedback. Large-scale external turbulent driving, of various intensities, is added to mimic galactic driving mechanisms. We analyse the resulting column density maps with a technique called Multi-scale non-Gaussian segmentation, which separates the coherent structures and the Gaussian background. This effectively discriminates between the various simulations and is a promising method to understand the ISM structure. In particular, the power spectrum of the coherent structures flattens above 60 pc when turbulence is driven only by stellar feedback. When large-scale driving is applied, the turn-over shifts to larger scales. A systematic comparison with the Large Magellanic Cloud (LMC) is then performed. Only 1 out of 25 regions has a coherent power spectrum that is consistent with the feedback-only simulation. A detailed study of the turn-over scale leads us to conclude that regular stellar feedback is not enough to explain the observed ISM structure on scales larger than 60 pc. Extreme feedback in the form of supergiant shells likely plays an important role but cannot explain all the regions of the LMC. If we assume ISM structure is generated by turbulence, another large-scale driving mechanism is needed to explain the entirety of the observations. [ABSTRACT FROM AUTHOR]

Published
2022
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50. The JCMT BISTRO Survey: Revealing the Diverse Magnetic Field Morphologies in Taurus Dense Cores with Sensitive Submillimeter Polarimetry

Author

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

Abstract

We have obtained sensitive dust continuum polarization observations at 850 μm in the B213 region of Taurus using POL-2 on SCUBA-2 at the James Clerk Maxwell Telescope as part of the B-fields in STar-forming Region Observations (BISTRO) survey. These observations allow us to probe magnetic field (B-field) at high spatial resolution (∼2000 au or ∼0.01 pc at 140 pc) in two protostellar cores (K04166 and K04169) and one prestellar core (Miz-8b) that lie within the B213 filament. Using the Davis–Chandrasekhar–Fermi method, we estimate the B-field strengths in K04166, K04169, and Miz-8b to be 38 ± 14, 44 ± 16, and 12 ± 5 μG, respectively. These cores show distinct mean B-field orientations. The B-field in K04166 is well ordered and aligned parallel to the orientations of the core minor axis, outflows, core rotation axis, and large-scale uniform B-field, in accordance with magnetically regulated star formation via ambipolar diffusion taking place in K04166. The B-field in K04169 is found to be ordered but oriented nearly perpendicular to the core minor axis and large-scale B-field and not well correlated with other axes. In contrast, Miz-8b exhibits a disordered B-field that shows no preferred alignment with the core minor axis or large-scale field. We found that only one core, K04166, retains a memory of the large-scale uniform B-field. The other two cores, K04169 and Miz-8b, are decoupled from the large-scale field. Such a complex B-field configuration could be caused by gas inflow onto the filament, even in the presence of a substantial magnetic flux.

Published
2021

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