Wave optics in spacetimes with compact gravitating object

Yasusada Nambu, Sousuke Noda, Yuichiro Sakai

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

We investigate the wave optics in spherically symmetric spacetimes: Schwarzschild black hole, spherical star with a perfect absorbing surface, and massless/massive Ellis wormholes. Assuming a point wave source, wave patterns and power spectrums for scattering waves are obtained by solving the scalar wave equation numerically. We found that the power spectrum at the observer in the forward direction shows oscillations with two characteristic periods determined by the interference effect associated with the photon sphere and the diffraction effect due to the absorbing boundary condition inside of the photon sphere.

Original languageEnglish
Article number064037
JournalPhysical Review D
Volume100
Issue number6
DOIs
Publication statusPublished - Sept 20 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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