English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Strong gravitational lensing produces multiple images of a gravitational wave(GW) signal, which can be observed by detectors as time-separated copies of thesame event. It has been shown that under favourable circumstances, by combininginformation from a quadruply lensed GW with electromagnetic observations oflensed galaxies, it is possible to identify the host galaxy of a binary blackhole coalescence. Comparing the luminosity distance obtained throughelectromagnetic means with the effective luminosity distance inferred from thelensed GW signal would then enable us to constrain alternative theories ofgravity that allow for modified GW propagation. Here we analyze modelsincluding large extra spatial dimensions, a running Planck mass, and a modelthat captures propagation effects occurring in a variety of alternativetheories to general relativity. We consider a plausible population of lensesand binary black holes and use Bayesian inference on simulated GW signals asseen in current detectors at design sensitivity, to arrive at a realisticassessment of the bounds that could be placed. We find that, due to the factthat the sources of lensed events will typically be at much larger redshifts,this method can improve over bounds from GW170817 and its electromagneticcounterpart by a factor of $\sim 5$ to $\mathcal{O}(10^2)$, depending on thealternative gravity model.

How well can modified gravitational wave propagation be constrained with strong lensing?