Magnetic Field of Molecular Gas Measured with the Velocity Gradient Technique I. Orion A
Magnetic Field of Molecular Gas Measured with the Velocity Gradient Technique I. Orion A
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用速度梯度技术测量分子气体的磁场 I. Orion A
DOI:
10.3847/1538-4357/ac78e8
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发表时间:
2022-06
期刊:
影响因子:
--
通讯作者:
Tursun Kadirya
中科院分区:
文献类型:
--
作者:
Zhao Mengke;Zhou Jianjun;Hu Yue;Lazarian A.;Tang Xindi;Baan Willem A.;Esimbek Jarken;He Yuxin;Li Dalei;Ji Weiguang;Tursun Kadirya
Abstract Magnetic fields play an important role in the evolution of molecular clouds and star formation. Using the velocity gradient technique (VGT) model, we measured the magnetic field in Orion A using the 12 CO, 13 CO, and C 18 O(1-0) emission lines at a scale of ∼0.07 pc. The measured B field shows an east–west orientation that is perpendicular to the integral shaped filament of Orion A at large scale. The VGT magnetic fields obtained from 13 CO and C 18 O are in agreement with the B field that is measured from the Planck 353 GHz dust polarization at a scale of ∼0.55 pc. Removal of density effects by using a velocity decomposition algorithm can significantly improve the accuracy of the VGT in tracing magnetic fields with the 12 CO(1-0) line. The magnetic field strengths of seven subclouds, OMC-1, OMC-2, OMC-3, OMC-4, OMC-5, L 1641-N, and NGC 1999, have also been estimated with the Davis–Chandrasekhar–Fermi and the Two Mach Numbers technique, and these are found to be in agreement with previous results obtained from dust polarization at far-infrared and submillimeter wavelengths. At smaller scales, the VGT prove a good method to measure magnetic fields.
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DOI:
10.3847/1538-4357/ab1484
发表时间:
2019-03
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Ya-wen Tang;P. Koch;N. Peretto;G. Novak;A. Duarte-Cabral;N. Chapman;P. Hsieh;Hsi-Wei Yen
通讯作者:
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DOI:
10.3847/1538-4357/abe4d4
发表时间:
2020-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
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通讯作者:
K. Yuen;K. Ho;A. Lazarian
DOI:
10.3847/1538-4357/aad3b5
发表时间:
2018-07
期刊:
The Astrophysical Journal
影响因子:
--
作者:
C. Zucker;H. Chen
通讯作者:
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DOI:
10.3847/2041-8213/aa6255
发表时间:
2017-01
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
K. Yuen;A. Lazarian
通讯作者:
K. Yuen;A. Lazarian
DOI:
10.1051/0004-6361/201834049
发表时间:
2018-03
期刊:
The Astrophysical Journal Supplement Series
影响因子:
--
作者:
Shuo Kong;H. Arce;J. Feddersen;J. Carpenter;F. Nakamura;Y. Shimajiri;A. Isella;V. Ossenkopf-Okada;A. Sargent;Á. Sánchez-Monge;S. Suri;J. Kauffmann;T. Pillai;J. Pineda;J. Koda;J. Bally;D. Lis;P. Padoan;R. Klessen;S. Mairs;A. Goodman;P. Goldsmith;P. McGehee;P. Schilke;P. Teuben;M. Maureira;C. Hara;A. Ginsburg;B. Burkhart;Rowan J. Smith;A. Schmiedeke;J. Pineda;S. Ishii;K. Sasaki;R. Kawabe;Yumiko Urasawa;S. Oyamada;Yoshihiro Tanabe
通讯作者:
Shuo Kong;H. Arce;J. Feddersen;J. Carpenter;F. Nakamura;Y. Shimajiri;A. Isella;V. Ossenkopf-Okada;A. Sargent;Á. Sánchez-Monge;S. Suri;J. Kauffmann;T. Pillai;J. Pineda;J. Koda;J. Bally;D. Lis;P. Padoan;R. Klessen;S. Mairs;A. Goodman;P. Goldsmith;P. McGehee;P. Schilke;P. Teuben;M. Maureira;C. Hara;A. Ginsburg;B. Burkhart;Rowan J. Smith;A. Schmiedeke;J. Pineda;S. Ishii;K. Sasaki;R. Kawabe;Yumiko Urasawa;S. Oyamada;Yoshihiro Tanabe