A Comparison between Faraday Tomography and Synchrotron Polarization Gradients
A Comparison between Faraday Tomography and Synchrotron Polarization Gradients
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DOI:
10.3847/1538-4357/ab578c
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发表时间:
2019-01
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影响因子:
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通讯作者:
K. Ho;K. Yuen;P. Leung;A. Lazarian
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文献类型:
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作者:
K. Ho;K. Yuen;P. Leung;A. Lazarian
Observations of synchrotron polarization at multiple frequencies in the presence of Faraday rotation can provide a way to reconstruct the 3D magnetic field distribution. In this paper we compare the well known Faraday Tomography (FT) technique to a new approach, Synchrotron Polarization Gradients (SPGs). We compare the strengths and limitations of the two techniques, and describe their synergy. In particular, we show that in situations when the FT technique fails, e.g., due to insufficient frequency coverage, the SPG can still trace the 3D structure of a magnetic field.