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Self-lensing flares from black hole binaries II: observing black hole shadows via light-curve tomography

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arxiv 2112.05829 v2 pith:M7RLXGCC submitted 2021-12-10 astro-ph.HE gr-qc

Self-lensing flares from black hole binaries II: observing black hole shadows via light-curve tomography

Jordy Davelaar , Zolt\'an Haiman This is my paper
classification astro-ph.HE gr-qc
keywords binaryblackfeatureholebinariesflaresself-lensingshadows
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Supermassive black hole (BH) binaries are thought to produce self-lensing flares (SLF) when the two BHs are aligned with the line-of-sight. If the binary orbit is observed nearly edge-on, we find a distinct feature in the light curve imprinted by the BH shadow from the lensed BH. We study this feature by ray-tracing in a binary model and predict that 1\% of the current binary candidates could show this feature. Our BH tomography method proposed here could make it possible to extract BH shadows that are spatially unresolvable by high-resolution VLBI.

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Cited by 3 Pith papers

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

  1. Relative Magnification Factor of Point Sources on Accretion Disks

    gr-qc 2026-04 unverdicted novelty 6.0

    Corotating point sources on accretion disks near black holes distort the relative magnification factor distribution, modulating caustics and encoding accretion flow kinematics via time-delayed images.

  2. A Universal Framework for Horizon-Scale Tests of Gravity with Black Hole Shadows

    gr-qc 2025-11 conditional novelty 6.0

    An adaptive ray-tracing and MCMC framework estimates shadow observables for arbitrary stationary metrics; applied to the Kerr–Bertotti–Robinson spacetime it yields an Sgr A* horizon-scale magnetic field of about 93 G ...

  3. Pre-localization of Massive Black Hole Binaries in the Millihertz Band

    gr-qc 2026-04 unverdicted novelty 5.0

    A neural spline flow pipeline performs amortized inference on millihertz MBHB signals, delivering ~20 deg² pre-merger sky localizations in ~1 minute while matching PTMCMC sky modes and parameter uncertainties.