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Wave optics for rotating stars

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arxiv 2410.03828 v1 pith:XOGXKUEB submitted 2024-10-04 gr-qc astro-ph.CO

Béatrice Bonga , Job Feldbrugge , Ariadna Ribes Metidieri This is my paper
classification gr-qcastro-ph.CO
keywords interferenceopticswaverotatingspinstarcausticcaustics
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Gravitational lensing in wave optics is a rich field combining caustic singularities, general relativity and interference phenomena. We present a detailed evaluation of wave optics effects resulting from the frame-dragging of a rotating star modeled by a Lense-Thirring spacetime. We demonstrate that, contrary to what was previously stated in the literature, the spin of the star leaves an intricate imprint on the interference fringes and the caustics of the lensed source. This interference pattern can in principle be used to directly measure the spin of the lens.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Wave-optics gravitational wave lensing in modified gravity

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    In a curvature-coupled propagation framework for modified gravity, gravitational-wave lensing in wave optics shows persistent infrared interactions that prevent the amplification factor from approaching unity at zero ...

  2. Which Saddles Contribute? The South-East Rule for Multidimensional Integrals

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    A geometric South-East rule combined with Borel-plane values and resurgence adjacency identifies contributing critical points for asymptotics of integrals e^{i k f(x)} over R^d without Picard-Lefschetz flows.

  3. Which Saddles Contribute? The South-East Rule for Multidimensional Integrals

    math-ph 2026-06 conditional novelty 7.0 of 10

    A proposed "South-East rule" reads the directions of edges in a Borel-plane adjacency graph of critical values to decide, without steepest-descent flow computations, which complex and real saddles contribute to multid...

  4. Gravitational-wave lensing beyond rays: a disordered-system approach

    astro-ph.CO 2026-04 unverdicted novelty 7.0 of 10

    A quenched-disorder approach with Schwinger-Keldysh path integrals produces an averaged density matrix for gravitational waves that separates phase-suppressing exponential terms from oscillatory corrections to coheren...

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