Searching for Gravitational Waves with Strongly Lensed Repeating Fast Radio Bursts

Abstract

Since their serendipitous discovery, Fast Radio Bursts (FRBs) have garnered a great deal of attention from both observers and theorists. A new class of radio telescopes with wide fields of view have enabled a rapid accumulation of FRB observations, confirming that FRBs originate from cosmological distances. The high occurrence rate of FRBs and the development of new instruments to observe them create opportunities for FRBs to be utilized for a host of astrophysical and cosmological studies. We focus on the rare, and as yet undetected, subset of FRBs that undergo repeated bursts and are strongly gravitationally lensed by intervening structure. An extremely precise timing of burst arrival times is possible for strongly lensed repeating FRBs, and we show how this timing precision enables the search for long wavelength gravitational waves, including those sourced by supermassive black hole binary systems. The timing of burst arrival for strongly lensed repeating FRBs is sensitive to gravitational wave sources near the FRB host galaxy, which may lie at cosmological distances and would therefore be extremely challenging to detect by other means. Timing of strongly lensed FRBs can also be combined with pulsar timing array data to search for correlated time delays characteristic of gravitational waves passing through the Earth.

13 pages, 4 figures. Updated to match published content. Comments welcome

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• Strongly Lensed Transient Sources: A Review
• Constraining Primordial Black Holes using Fast Radio Burst Gravitational-Lens Interferometry with CHIME/FRB
• A High-Time Resolution Search for Compact Objects using Fast Radio Burst Gravitational Lens Interferometry with CHIME/FRB
• Detecting Dark Matter Substructures on Small Scales with Fast Radio Bursts
• Gravitational Wave Timing Array
• Detecting Cosmic Strings with Lensed Fast Radio Bursts
• Prospects of strongly lensed fast radio bursts: Simultaneous measurement of post-Newtonian parameter and Hubble constant
• Multi-messenger Gravitational Lensing
• Probing the anisotropic distribution of baryon matter in the Universe using fast radio bursts
• Probing Gravitational Slip with Strongly Lensed Fast Radio Bursts
• Fast Radio Bursts as crustal dynamical events induced by magnetic field evolution in young magnetars
• Search for the correlations between host properties and $\mathrm{D}{\mathrm{M}}_{\mathrm{host}}$ of fast radio bursts: constraints on the baryon mass fraction in IGM
• Can Einstein (rings) surf Gravitational Waves?