2026

  1. fig_arealaw.png
    Measuring a Black Hole’s Area Immediately after Merger: A Direct-Wave Test of Hawking’s Area Law
    Adrian Ka-Wai Chung, Kelvin Ka-Ho Lam, Anna Liu, and 1 more author
    arXiv preprint, Jun 2026
    arXiv
  2. fig_tgr_remnants.png
    GWTC-4.0: Tests of General Relativity. III. Tests of the Remnants
    LVK Collaboration (incl. A. Liu)
    arXiv preprint, Mar 2026
    Contribution: Conducted ringdown analyses and developed the ringdown analysis code pyRing.
    arXiv

2025

  1. fig_gwtc4_lensing.png
    GWTC-4.0: Searches for Gravitational Wave Lensing Signatures
    LVK Collaboration (incl. A. Liu)
    Dec 2025
    Contribution: One of three developers and analysts of the Gravelamps team, responsible for the micro- and millilensing analyses and the primary developer of the millilensing analyses.
    arXiv
  2. bbh_merger.png
    GW231123: a Binary Black Hole Merger with Total Mass 190–265 M⊙
    LVK Collaboration (incl. A. Liu)
    The Astrophysical Journal Letters, Oct 2025
    Contribution: Lead analyst for the ringdown and lensing studies of the exceptional event GW231123 — directed both analyses, coordinated code reviews and results validation, and presented results at collaboration meetings; served as liaison between the LVK lensing group and the paper-writing team.
    (117 citations)
    DOI
  3. lensing_ppE_preview.png
    Millilensing induced systematic biases in parameterized tests of General Relativity
    Anna Liu, Rohit S. Chandramouli, Otto A. Hannuksela, and 2 more authors
    Phys. Rev. D, Sep 2025
    (9 citations)
    DOI
  4. lens_einstein_ring.png
    LensingFlow: An Automated Workflow for Gravitational Wave Lensing Analyses
    Wright, M., et al. (incl. A. Liu)
    arXiv preprint, Jul 2025
    (5 citations)
    arXiv
  5. fig_mm_lensing.png
    Multi-messenger gravitational lensing
    Smith, G. P., et al. (incl. A. Liu)
    Phil. Trans. Roy. Soc. Lond. A, May 2025
    (15 citations)
    DOI arXiv

2024

  1. lensing_precession_preview.png
    Can we discern millilensed gravitational-wave signals from signals produced by precessing binary black holes with ground-based detectors?
    Anna Liu, and Kyungmin Kim
    Phys. Rev. D, Dec 2024
    (16 citations)
    DOI
  2. bbh_merger.png
    Kicking time back in black-hole mergers: Ancestral masses, spins, birth recoils and hierarchical-formation viability of GW190521
    Carlos Araújo Álvarez, Henry W. Y. Wong, Anna Liu, and 1 more author
    ApJ, Dec 2024
    (18 citations)
    DOI
  3. fig_ringdown_eft.png
    Ringdown Analysis of Rotating Black Holes in Effective Field Theory Extensions of General Relativity
    Simon Maenaut, Gregorio Carullo, Pablo A. Cano, and 4 more authors
    arXiv preprint, Nov 2024
    (21 citations)
    arXiv
  4. lens_cluster.png
    Search for gravitational-lensing signatures in the full third observing run of the LIGO-Virgo network
    LVK Collaboration (incl. A. Liu)
    ApJ, Jul 2024
    Contribution: One of four analysts conducting subthreshold searches for lensed gravitational-wave candidates obscured by detector noise, using the GstLAL search pipeline.
    (135 citations)
    DOI

2023

  1. lens_cluster.png
    Follow-up analyses to the O3 LIGO–Virgo–KAGRA lensing searches
    Janquart, J., et al. (incl. A. Liu)
    MNRAS, Sep 2023
    (66 citations)
    DOI
  2. lens_einstein_ring.png
    Exploring the hidden Universe: a novel phenomenological approach for recovering arbitrary gravitational-wave millilensing configurations
    Anna Liu, Isaac C. F. Wong, Samson H. W. Leong, and 3 more authors
    MNRAS, May 2023
    (58 citations)
    DOI