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Strongly lensed repeating fast radio bursts as precision probes of the universe

Author

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  • Zheng-Xiang Li

    (Beijing Normal University)

  • He Gao

    (Beijing Normal University)

  • Xu-Heng Ding

    (Wuhan University)

  • Guo-Jian Wang

    (Beijing Normal University)

  • Bing Zhang

    (University of Nevada
    Chinese Academy of Sciences
    Peking University)

Abstract

Fast radio bursts (FRBs), bright transients with millisecond durations at ∼GHz and typical redshifts probably >0.8, are likely to be gravitationally lensed by intervening galaxies. Since the time delay between images of strongly lensed FRB can be measured to extremely high precision because of the large ratio ∼109 between the typical galaxy-lensing delay time $$\sim{\cal O}$$ ~ O (10 days) and the width of bursts $$\sim{\cal O}$$ ~ O (ms), we propose strongly lensed FRBs as precision probes of the universe. We show that, within the flat ΛCDM model, the Hubble constant H0 can be constrained with a ~0.91% uncertainty from 10 such systems probably observed with the square kilometer array (SKA) in

Suggested Citation

  • Zheng-Xiang Li & He Gao & Xu-Heng Ding & Guo-Jian Wang & Bing Zhang, 2018. "Strongly lensed repeating fast radio bursts as precision probes of the universe," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06303-0
    DOI: 10.1038/s41467-018-06303-0
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