Multiple Images and Flux Ratio Anomaly of Fuzzy Gravitational Lenses

Abstract

Extremely light bosonic wave dark matter ($\psi$DM) is an emerging dark matter candidate contesting the conventional cold dark matter paradigm and a model subject to intense scrutiny of late. This work for the first time reports testable salient features pertinent to gravitational lenses of $\psi$DM halos. $\psi$DM halos are distinctly filled with large-amplitude, small-scale density fluctuations with $\delta \rho /{\rho }_{\mathrm{halo}}\sim 1$ in form of density granules. This halo yields ubiquitous flux ratio anomalies of a few tens of percent, as is typically found for lensed quasars, and may also produce rare hexad and octad images, for sources located in well-defined caustic zones. We have found new critical features appearing in the highly de-magnified lens center when the halo has sufficiently high surface density near a very compact massive core.

6 pages, 4 figures

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Cited by in corpus (22)

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• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Einstein rings modulated by wavelike dark matter from anomalies in gravitationally lensed images
• A lensed radio jet at milli-arcsecond resolution II: Constraints on fuzzy dark matter from an extended gravitational arc
• Vortices and waves in light dark matter
• Construction of Wave Dark Matter Halos: Numerical Algorithm and Analytical Constraints
• Quantum fluctuations masquerade as halos: Bounds on ultra-light dark matter from quadruply-imaged quasars
• On the correlation between dark matter, intracluster light and globular cluster distribution in SMACS0723
• Flashlights: An Off-Caustic Lensed Star at Redshift $z$ = 1.26 in Abell 370
• Imaging dark matter at the smallest scales with $z\approx 1$ lensed stars
• An analytic model for the sub-galactic matter power spectrum in fuzzy dark matter halos
• Understanding the "Feeble Giant" Crater II with tidally stretched Wave Dark Matter
• Flashlights: Prospects for constraining the Initial Mass Function around cosmic noon with caustic-crossing events
• Galaxy formation with wave/fuzzy dark matter: The core-halo structure and the solitonic imprint
• Fuzzy dark matter simulations
• Time Delay Anomalies of Fuzzy Gravitational Lenses
• A high-resolution view of the source-plane magnification near cluster caustics in wave dark matter models
• Unveiling Orbital Chaos: The Wild Heart of Fuzzy Dark Matter Structures
• Detecting dark matter substructure with lensed quasars in optical bands
• Probing Dark Matter Substructure with Image Number Anomaly in Strong Lensing Systems
• Godzilla, a monster lurks in the Sunburst galaxy
• A Fuzzy Situation Eased: Cold Dark Matter with Multipoles Can Explain The Double Radio Quad Lens HS 0810+2554