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RADIO ASTRONOMY

From a small antenna to cosmic dawn

Conflicting results in measurements of the global spectrum of the hydrogen 21-cm line may indicate that there are large systematic errors. A different experimental approach to reach the redshifted signal from cosmic dawn assesses possible systematic errors together with the signal.

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Fig. 1: Cosmic timeline.

References

  1. de Lera Acedo, E. et al. Nat. Astron. https://doi.org/10.1038/s41550-022-01709-9 (2022).

    Article  Google Scholar 

  2. Chen, X. & Miralda-Escude, J. Astrophys. J. 602, 1–11 (2004).

    Article  ADS  Google Scholar 

  3. Chen, X. & Miralda-Escude, J. Astrophys. J. 684, 18–33 (2008).

    Article  ADS  Google Scholar 

  4. Bowman, J. D., Rogers, A. E. E., Monsalve, R. A., Mozdzen, T. J. & Mahesh, N. Nature 555, 67–70 (2018).

    Article  ADS  Google Scholar 

  5. Barkana, R. Nature 555, 71–74 (2018).

    Article  ADS  Google Scholar 

  6. Feng, C. & Holder, G. Astrophys. J. 858, 17 (2018).

    Article  Google Scholar 

  7. Ewall-Wice, A. et al. Astrophys. J. 868, 63 (2018).

    Article  ADS  Google Scholar 

  8. Singh, S. et al. Nat. Astron. https://doi.org/10.1038/s41550-022-01610-5 (2022).

    Article  Google Scholar 

  9. Burns, J. O. Phil. Trans. Roy. Soc. A 379, 2019.0564 (2020).

    Article  Google Scholar 

  10. Chen, X. et al. Phil. Trans. Roy. Soc. A 379, 2019.0566 (2020).

    Article  Google Scholar 

Download references

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Correspondence to Xuelei Chen.

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Chen, X. From a small antenna to cosmic dawn. Nat Astron 6, 887–888 (2022). https://doi.org/10.1038/s41550-022-01724-w

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  • DOI: https://doi.org/10.1038/s41550-022-01724-w

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