Magnetic field morphology in interstellar clouds with the velocity gradient technique
Magnetic field morphology in interstellar clouds with the velocity gradient technique
复制标题
利用速度梯度技术研究星际云中的磁场形态
DOI:
10.1038/s41550-019-0769-0
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发表时间:
2019
期刊:
影响因子:
14.1
通讯作者:
Lazarian, Alex
中科院分区:
文献类型:
--
作者:
Hu, Yue;Yuen, Ka Ho;Lazarian, Victor;Ho, Ka Wai;Benjamin, Robert A.;Hill, Alex S.;Lockman, Felix J.;Goldsmith, Paul F.;Lazarian, Alex
Magnetic fields, while ubiquitous in many astrophysical environments, are challenging to measure observationally. Based on the properties of anisotropy of eddies in magnetized turbulence, the velocity gradient technique is a method synergistic to dust polarimetry that is capable of tracing plane-of-the-sky magnetic fields, measuring the magnetization of interstellar media and estimating the fraction of gravitational collapsing gas in molecular clouds using spectral line observations. Here, we apply this technique to five low-mass star-forming molecular clouds in the Gould Belt and compare the results to the magnetic field orientation obtained from polarized dust emission. We find that the estimates of magnetic field orientations and magnetization for both methods are statistically similar. We estimate the fraction of collapsing gas in the selected clouds. By using the velocity gradient technique, we also present the plane-of-the-sky magnetic field orientation and magnetization of the Smith Cloud, for which dust polarimetry data are unavailable.
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DOI:
10.1086/524222
发表时间:
2007-10
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
B. Wakker;D. York;J. Howk;J. Barentine;J. Barentine;R. Wilhelm;R. Peletier;H. V. Woerden;T. Beers;Ž. Ivezić;P. Richter;U. Schwarz;U. Schwarz
通讯作者:
B. Wakker;D. York;J. Howk;J. Barentine;J. Barentine;R. Wilhelm;R. Peletier;H. V. Woerden;T. Beers;Ž. Ivezić;P. Richter;U. Schwarz;U. Schwarz
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
J. Bland;S. Veilleux;G. Cecil;M. Putman;B. K. Gibson;P. Maloney
通讯作者:
P. Maloney
DOI:
10.3847/1538-4357/ab41f2
发表时间:
2019-04
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Yue Hu;K. Yuen;A. Lazarian;L. Fissel;Paul Jones;Maria R. Cunningham
通讯作者:
Yue Hu;K. Yuen;A. Lazarian;L. Fissel;Paul Jones;Maria R. Cunningham
DOI:
10.3847/1538-4357/ab60a5
发表时间:
2019-10
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Yue Hu;K. Yuen;A. Lazarian
通讯作者:
Yue Hu;K. Yuen;A. Lazarian
DOI:
10.3847/1538-4357/aaf886
发表时间:
2018-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
S. Betti;A. Hill;S. A. Mao;B. Gaensler;F. J. Lockman;N. McClure-Griffiths;R. Benjamin
通讯作者:
S. Betti;A. Hill;S. A. Mao;B. Gaensler;F. J. Lockman;N. McClure-Griffiths;R. Benjamin