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VERY LONG BASELINE INTERFEROMETRY

Clock comparison using black holes

Nature Physics volume 17, pages 164–165 (2021)Cite this article

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Observing accreting black holes in the early Universe allows precise comparison of clocks over intercontinental distances on Earth. This is achieved with a novel observation strategy using the next generation of very long baseline interferometry systems.

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Fig. 1: Schematic outline of future intercontinental clock comparisons.

References

  1. Brewer, S. M. et al. Phys. Rev. Lett. 123, 033201 (2019).

    Article  ADS  Google Scholar 

  2. Riehle, F., Gill, P., Arias, F. & Robertsson, L. Metrologia 55, 188–200 (2018).

    Article  ADS  Google Scholar 

  3. Pizzocaro, M. et al. Nat. Phys. https://doi.org/10.1038/s41567-020-01038-6 (2020).

  4. Petrachenko, B. et al. NASA Technical Memorandum NASA/TM-2009-214180 (NASA, 2009).

  5. Fey, A. L. et al. Astron. J. 150, 58 (2015).

    Article  ADS  Google Scholar 

  6. Denker, H. et al. J. Geod. 92, 487–516 (2018).

    Article  ADS  Google Scholar 

  7. Nothnagel, A., Artz, T., Behrend, D. & Malkin, Z. J. Geod. 91, 711–721 (2017).

    Article  ADS  Google Scholar 

  8. Anderson, J. M. & Xu, M. H. JGR Solid Earth 123, 10162–10190 (2018).

    Article  ADS  Google Scholar 

  9. Niell, A. et al. Radio Sci. 53, 1269–1291 (2018).

    Article  ADS  Google Scholar 

Download references

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  1. Department of Space, Earth and Environment, Chalmers University of Technology, Gothenburg, Sweden

    Rüdiger Haas

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  1. Rüdiger Haas
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Correspondence to Rüdiger Haas.

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Haas, R. Clock comparison using black holes. Nat. Phys. 17, 164–165 (2021). https://doi.org/10.1038/s41567-020-01071-5

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