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Scattering of scalar, electromagnetic, and gravitational waves from binary systems

Research output: Contribution to journalArticle

Lorenzo Annulli, Laura Bernard, Diego Blas, Vitor Cardoso

Original languageEnglish
Pages (from-to)084001
Number of pages1
JournalPhysical Review D (Particles, Fields, Gravitation and Cosmology)
Volume98
DOIs
Publication statusPublished - 1 Oct 2018

Bibliographical note

19 pages, 3 figures, to appear in PRD

King's Authors

Abstract

The direct detection of gravitational waves crowns decades of efforts in the modeling of sources and of increasing detectors’ sensitivity. With future third-generation Earth-based detectors or space-based observatories, gravitational-wave astronomy will be at its full bloom. Previously brushed-aside questions on environmental or other systematic effects in the generation and propagation of gravitational waves are now begging for a systematic treatment. Here, we study how electromagnetic and gravitational radiation is scattered by a binary system. Scattering cross sections, resonances and the effect of an impinging wave on a gravitational-bound binary are worked out for the first time. The ratio between the scattered-wave amplitude and the incident wave can be of order
10

5
for known pulsars, bringing this into the realm of future gravitational-wave observatories. For currently realistic distribution of compact-object binaries, the interaction cross section is too small to be of relevance.

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