Probing gravitational slip with strongly lensed fast radio bursts

Tal Abadi, Ely D. Kovetz

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The rapid accumulation of observed fast radio bursts (FRBs) originating from cosmological distances makes it likely that some will be strongly lensed by intervening matter along the line of sight. Detection of lensed FRB repeaters, which account for a noteworthy fraction of the total population, will allow not only an accurate measurement of the lensing time delay, but also follow-up high-resolution observations to pinpoint the location of the lensed images. Recent works proposed to use such strongly lensed FRBs to derive constraints on the current expansion rate H0 as well as on cosmic curvature. Here, we study the prospects for placing constraints on departures from general relativity via such systems. Using an ensemble of simulated events, we focus on the gravitational slip parameter γPN in screened modified gravity models and show that FRB time-delay measurements can yield constraints as tight as |γPN-1|0.04×(Λ/100 kpc)×[N/10]-1/2 at 1σ with ten detections.

Original languageEnglish
Article number103515
JournalPhysical Review D
Volume104
Issue number10
DOIs
StatePublished - 15 Nov 2021

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint

Dive into the research topics of 'Probing gravitational slip with strongly lensed fast radio bursts'. Together they form a unique fingerprint.

Cite this