File:Emmaalexander depol.png
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English: Depolarisation mechanisms. a) Internal depolarisation occurs due to the shaded Faraday-rotating medium also producing polarised synchrotron emission. Despite the emission originating at the same polarisation angles and experiencing the same rate of rotation, the difference in their path lengths results in them emerging from the medium with differing polarisation angles. b) Bandwidth depolarisation occurs due to insufficient sampling in frequency/ wavelength space. As rotation angle goes as λ2, too course a resolution means that a range of polarisation angles are observed across the band. c) Beam depolarisation occurs due to insufficient spatial sampling. Considering areas of different observed polarisation angle (arrows indicating this direction within the small circles), if they are not sampled individually then their individual polarisation angles are cancelled out. The code I wrote to generate the rotating waves can be found [1]. If used, please cite with the DOI https://doi.org/10.5281/zenodo.5899326. |
| Date | |
| Source | [2] |
| Author | Emma Alexander |
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| current | 20:51, 24 March 2022 | | 1,072 × 654 (266 KB) | Mike Peel (talk | contribs) | {{Information |Description={{en|Depolarisation mechanisms. a) Internal depolarisation occurs due to the shaded Faraday-rotating medium also producing polarised synchrotron emission. Despite the emission originating at the same polarisation angles and experiencing the same rate of rotation, the difference in their path lengths results in them emerging from the medium with differing polarisation angles. b) Bandwidth depolarisation occurs due to insufficient sampling in frequency/ wavelength spa... |
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