Radio astronomers bypass Earth's atmosphere with new calibration technique

https://phys.org/news/2024-04-radio-astronomers-bypass-disturbing-earth.html

by PaulHoule • 2 years ago

34 3 2 years ago

viktour19• 2 years ago

What are details of the technique?

bryant• 2 years ago

If you're keen on reading about the technique, the nature source (https://www.nature.com/articles/s41550-024-02266-z) is paywalled. Arxiv preprint: https://arxiv.org/pdf/2405.05311

lucb1e• 2 years ago

Article has no info on what this "new calibration technique" is whatsoever. The linked paper has the following to say on what the calibration strategy is:

[Abstract:] Here we present a calibration strategy to correct for the ionosphere in the decametre band. [End of abstract.] Get Nature+, our best-value online-access subscription 24,99 € / 30 days cancel any time

I wonder if that's why the article doesn't know either. Useful submission.

Edit: Per this banned post, <https://news.ycombinator.com/item?id=40329535>, the technique is:

First, instrumental effects are corrected by using 3C196 [a quasar] as a calibrator source. Next, differential Faraday rotation and phase corrections for first and third-order ionospheric effects were obtained for the whole field of view

Where do they get the phase corrections from though? Sounds like a rest of the owl, but then I'm just a lay person casually interested so I'm probably just missing something

Radio astronomers bypass Earth's atmosphere with new calibration technique

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