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Probing the Intergalactic Medium with Fast Radio Bursts

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arxiv 1409.3244 v3 pith:XXHVZAOM submitted 2014-09-10 astro-ph.HE astro-ph.CO

Z. Zheng , E. O. Ofek , S. R. Kulkarni , J. D. Neill , M. Juric This is my paper · ORCID
classification astro-ph.HEastro-ph.CO
keywords frbsapplicationsburstsfastintergalacticmeasuremediumpotential
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The recently discovered fast radio bursts (FRBs), presumably of extra-galactic origin, have the potential to become a powerful probe of the intergalactic medium (IGM). We point out a few such potential applications. We provide expressions for the dispersion measure and rotation measure as a function of redshift, and we discuss the sensitivity of these measures to the HeII reionization and the IGM magnetic field. Finally we calculate the microlensing effect from an isolate, extragalctic stellar-mass compact object on the FRB spectrum. The time delays between the two lensing images will induce constructive and destructive interference, leaving a specific imprint on the spectra of FRBs. With a high all-sky rate, a large statistical sample of FRBs is expected to make these applications feasible.

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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Discovery of 27 new Rotating Radio Transients by MeerTRAP

    astro-ph.HE 2026-08 conditional novelty 6.0 of 10

    MeerTRAP discovers 27 new rotating radio transients in the Galaxy, localizes 14 of them, and obtains coherent timing solutions for 4.

  2. Two new highly scattered fast radio bursts: evidence for scatter broadening by the circumsource medium

    astro-ph.HE 2026-08 conditional novelty 6.0 of 10

    FRB240312D is the first highly scattered FRB whose scattering screen is localized to within about 8 pc of the source, with the two new bursts implying a rate consistent with shorter FRBs.

  3. Constraining the Baryon Fraction in Extragalactic Diffuse Ionized Gas with 124 Localized Fast Radio Bursts

    astro-ph.CO 2025-06 conditional novelty 5.0 of 10

    Analyzing 92 localized FRBs with a Jacobian-corrected IGM dispersion PDF plus CMB, BAO, and supernova data gives f_IGM = 0.864 ± 0.041 (YMW16, ΛCDM); the abstract's '124 bursts, f_d > 90%' headline is not supported by...

  4. A series of unfortunate events: CHIME/FRB misclassification of a Galactic pulsar as a periodic fast radio burst

    astro-ph.HE 2026-06 accept novelty 2.0 of 10

    A reported periodic fast radio burst is reclassified as Galactic pulsar emission due to CHIME calibration and beam-pointing error.

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