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Astrophysics > High Energy Astrophysical Phenomena

arXiv:2112.05829 (astro-ph)
[Submitted on 10 Dec 2021 (v1), last revised 27 Dec 2021 (this
version, v2)]

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

Authors:Jordy Davelaar, Zoltan Haiman
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    Abstract: 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.

Comments: 6 pages, 3 figures, 1 table. Submitted to journal
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE); General
          Relativity and Quantum Cosmology (gr-qc)
Cite as:  arXiv:2112.05829 [astro-ph.HE]
          (or arXiv:2112.05829v2 [astro-ph.HE] for this version)
          https://doi.org/10.48550/arXiv.2112.05829
          Focus to learn more
          arXiv-issued DOI via DataCite

Submission history

From: Jordy Davelaar [view email]
[v1] Fri, 10 Dec 2021 20:55:10 UTC (258 KB)
[v2] Mon, 27 Dec 2021 14:08:55 UTC (259 KB)
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