Observing Cosmological Processes in Real Time with Repeating Fast Radio Bursts

Adi Zitrin, David Eichler

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


It is noted that the duration of a fast radio burst (FRB), about 10-3 s, is a smaller fraction of the time delay between multiple images of a source gravitationally lensed by a galaxy or galaxy cluster than the human lifetime is to the age of the universe. Thus repeating, strongly lensed FRBs may offer an unprecedented opportunity for observing cosmological evolution in "real time." The possibility is discussed of observing cosmic expansion, transverse proper motion, mass accretion, and perhaps growth of density perturbations, as a function of redshift.

Original languageEnglish
Article number101
JournalAstrophysical Journal
Issue number2
StatePublished - 20 Oct 2018


  • cosmology: observations
  • dark energy
  • dark matter
  • distance scale
  • gravitational lensing: strong

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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