{"total":21,"items":[{"citing_arxiv_id":"2605.11703","ref_index":205,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"GW240925 and GW250207: Astrophysical Calibration of Gravitational-wave Detectors","primary_cat":"gr-qc","submitted_at":"2026-05-12T07:58:35+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":8.0,"formal_verification":"none","one_line_summary":"The first informative astrophysical calibration of gravitational-wave detectors is reported using GW240925 and GW250207.","context_count":1,"top_context_role":"method","top_context_polarity":"use_method","context_text":"3515 (1995), arXiv:gr-qc/9501027. [203] N. Christensen and R. Meyer, Parameter estimation with gravitational waves, Rev. Mod. Phys.94, 025001 (2022), arXiv:2204.04449 [gr-qc]. [204] T. B. Littenberg and N. J. Cornish, Bayesian inference for spectral estimation of gravitational wave detector noise, Phys. Rev. D91, 084034 (2015), arXiv:1410.3852 [gr-qc]. [205] G. Prattenet al., Computationally efficient models for the dominant and subdominant harmonic modes of precess- ing binary black holes, Phys. Rev. D103, 104056 (2021), arXiv:2004.06503 [gr-qc]. [206] M. Colleoni, F. A. R. Vidal, C. Garc 'ıa-Quir'os, S. Akc ¸ay, and S. Bera, Fast frequency-domain gravitational waveforms for precessing binaries with a new twist, Phys."},{"citing_arxiv_id":"2605.11274","ref_index":52,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"End-to-End Population Inference from Gravitational-Wave Strain using Transformers","primary_cat":"gr-qc","submitted_at":"2026-05-11T21:54:39+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Dingo-Pop uses a transformer to perform amortized, end-to-end population inference from GW strain data in seconds, bypassing per-event Monte Carlo sampling.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.04579","ref_index":40,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"The Impact of Spin Priors on Parameterized Tests of General Relativity","primary_cat":"gr-qc","submitted_at":"2026-05-06T07:30:35+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Spin prior choices propagate into tests of GR via the 1.5PN deviation parameter δφ̂3 in a non-trivial, event-dependent way, with stronger effects for short-inspiral events and partial degeneracy with χ_eff when the deviation is included.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.27734","ref_index":53,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Constraining Dipole Radiation with Multiband Gravitational Waves from Eccentric Binary Black Holes","primary_cat":"gr-qc","submitted_at":"2026-04-30T11:24:37+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Multiband observations of eccentric binary black holes can constrain dipole-radiation deviations from general relativity to |b| ≲ 10^{-7} for a GW231123-like event when combining one year of space-based data with ground-informed priors.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.25582","ref_index":82,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Lessons from binary dynamics of inspiralling equal-mass boson-star mergers","primary_cat":"gr-qc","submitted_at":"2026-04-28T12:50:09+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Numerical simulations of equal-mass boson-star mergers reveal larger waveform deviations from black-hole binaries in late inspiral and merger, plus odd multipole excitations for certain scalar-field phases, with some signals degenerate until IMR consistency tests are applied.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.22441","ref_index":91,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"How lonely are the Binary Compact Objects Detected by the LIGO-Virgo-KAGRA Collaboration?","primary_cat":"astro-ph.HE","submitted_at":"2026-04-24T10:59:12+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"No three-body encounter signatures detected in GW170817, GW190814, and GW230627_015337, constraining intermediate-mass black holes above 100 solar masses within roughly 0.1 AU of these binaries.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.21859","ref_index":93,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Mitigating Systematic Errors in Parameter Estimation of Binary Black Hole Mergers in O1-O3 LIGO-Virgo Data","primary_cat":"astro-ph.HE","submitted_at":"2026-04-23T16:52:02+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"Parametric models incorporating waveform phase and amplitude uncertainties mitigate systematic errors in gravitational wave parameter estimation, producing consistent results across models and raw/deglitched data for events like GW191109_010717 and GW200129_065458.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.15965","ref_index":38,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Improved Constraints on Non-Kerr Deviations from Binary Black Hole Inspirals Using GWTC-4 Data","primary_cat":"gr-qc","submitted_at":"2026-04-17T11:29:10+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":3.0,"formal_verification":"none","one_line_summary":"Bayesian constraints from GWTC-4 binary black hole inspirals show Johannsen metric deformation parameters α13 and ε3 consistent with zero, supporting the Kerr hypothesis.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.15885","ref_index":65,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Gravitational-wave astronomy requires population-informed parameter estimation","primary_cat":"gr-qc","submitted_at":"2026-04-17T09:31:16+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"Population-informed hierarchical parameter estimation is required for unbiased astrophysical interpretation of gravitational-wave events rather than using standard individual posteriors with reference priors.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.14270","ref_index":16,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Fast neural network surrogate for multimodal effective-one-body gravitational waveforms from generically precessing compact binaries","primary_cat":"gr-qc","submitted_at":"2026-04-15T18:00:00+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Neural network surrogate approximates precessing compact binary gravitational waveforms up to 1000x faster than the base EOB model with validated accuracy.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.14134","ref_index":81,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"All-order structure of static gravitational interactions and the seventh post-Newtonian potential","primary_cat":"hep-th","submitted_at":"2026-04-15T17:55:46+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"A closed formula computes static post-Newtonian corrections at arbitrary odd orders in gravity, yielding the explicit seventh post-Newtonian potential that matches an independent diagrammatic method.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.11895","ref_index":98,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Novel ringdown tests of general relativity with black hole greybody factors","primary_cat":"gr-qc","submitted_at":"2026-04-13T18:00:07+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"GreyRing model based on greybody factors reproduces numerical relativity ringdown signals with mismatches of order 10^{-6} and enables a new post-merger consistency test of general relativity applied to GW250114.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.09828","ref_index":51,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Testing the Kerr hypothesis beyond the quadrupole with GW241011","primary_cat":"gr-qc","submitted_at":"2026-04-10T18:58:10+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":8.0,"formal_verification":"none","one_line_summary":"GW241011 data shows consistency with Kerr black holes for both quadrupole and octupole moments and delivers the first observational bounds on spin-induced octupole deviations.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.08179","ref_index":18,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"GW231123: False Massive Graviton Signatures from Unmodeled Point-Mass Lensing","primary_cat":"gr-qc","submitted_at":"2026-04-09T12:35:47+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Unmodeled point-mass lensing produces a spurious nonzero graviton mass posterior in GW231123 that vanishes when lensing is included in the analysis.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.07388","ref_index":34,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"GW190711_030756 and GW200114_020818: astrophysical interpretation of two asymmetric binary black hole mergers in the IAS catalog","primary_cat":"astro-ph.HE","submitted_at":"2026-04-08T05:45:02+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"Two asymmetric BBH mergers are characterized with mass ratios 0.35 and ≤0.20; one shows high spins, negative χ_eff, and strong precession, suggesting an emerging population of massive rapidly spinning systems.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.06090","ref_index":113,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Posterior Predictive Checks for Gravitational-wave Populations: Limitations and Improvements","primary_cat":"gr-qc","submitted_at":"2026-04-07T17:03:44+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Maximum-likelihood-based posterior predictive checks detect model misspecification better than event-level versions for uncertain spin tilts, but current detector sensitivity limits their power; the Gaussian Component Spins model underpredicts high spin magnitudes and overpredicts anti-aligned tilts","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.04546","ref_index":77,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Inference of recoil kicks from binary black hole mergers up to GWTC--4 and their astrophysical implications","primary_cat":"astro-ph.HE","submitted_at":"2026-04-06T09:13:33+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Recoil kicks are inferred for GWTC-4 binary black hole events with values up to nearly 1000 km/s for some, yielding retention probabilities of 1-5% in globular clusters and 70-100% in elliptical galaxies.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2601.07908","ref_index":117,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Signatures of a subpopulation of hierarchical mergers in the GWTC-4 gravitational-wave dataset","primary_cat":"gr-qc","submitted_at":"2026-01-12T19:00:00+00:00","verdict":null,"verdict_confidence":null,"novelty_score":null,"formal_verification":null,"one_line_summary":null,"context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2509.08054","ref_index":49,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"GW250114: testing Hawking's area law and the Kerr nature of black holes","primary_cat":"gr-qc","submitted_at":"2025-09-09T18:00:07+00:00","verdict":"ACCEPT","verdict_confidence":"MODERATE","novelty_score":5.0,"formal_verification":"none","one_line_summary":"GW250114 data confirm the remnant black hole ringdown frequencies lie within 30% of Kerr predictions and that the final horizon area is larger than the sum of the progenitors' areas to high credibility.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2505.23895","ref_index":282,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Black hole spectroscopy: from theory to experiment","primary_cat":"gr-qc","submitted_at":"2025-05-29T18:00:01+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":2.0,"formal_verification":"none","one_line_summary":"A review summarizing the state of the art in black hole quasinormal modes, ringdown waveform modeling, current LIGO-Virgo-KAGRA observations, and prospects for LISA and next-generation detectors.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Qθ = {⟨· | ·⟩θ, Uθ} , (2.69) where Uθ = { sSℓ(θ; aωℓmn) | ℓ ≥ max(|m|, |s|) } [35, 37]. Te small spin expansion of˜Sℓ was computed and Qθ was used to estimate ringdown amplitudes by projection for extreme mass-ratio, comparable mass-ratio, and precessing BBH simulations in [283]. An approximation ofQθ is used inPhenomXHM [296] and related GW signal models [280-282]. We have the freedom to define the norm of the spheroidal harmonics based on the scalar product [35]. This, along with completeness of the spheroidal harmonics [35, 308], means that Qθ is a Hilbert space. 2.5.3. QNM orthogonality product. A bilinear form with respect to which the time- translation operator is symmetric can be constructed to show that QNMs of the spin-s"},{"citing_arxiv_id":"2112.06861","ref_index":113,"ref_count":1,"confidence":0.9,"is_internal_anchor":true,"paper_title":"Tests of General Relativity with GWTC-3","primary_cat":"gr-qc","submitted_at":"2021-12-13T18:19:04+00:00","verdict":"ACCEPT","verdict_confidence":"LOW","novelty_score":3.0,"formal_verification":"none","one_line_summary":"No evidence for physics beyond general relativity is found in the analysis of 15 GW events from GWTC-3, with consistency in residuals, PN parameters, and remnant properties.","context_count":1,"top_context_role":"method","top_context_polarity":"use_method","context_text":"These coordinates assume the spin of the black hole to be along the θ = 0 direction. The contribution of counter-rotating perturbations is ignored, since it is expected to be negligible in the post-merger regime of the signals under consideration. We approximate the spheroidal harmonics with spherical harmonics, leading to a feature, called mode-mixing of QNMs [113, 256, 257], which mixes modes that have the same m index but different ℓ indices. Mode mixing, especially of ℓ = |m| = 2 mode, is expected to be negligible for the modes that we consider here [120]. We present two analyses of ringdown: the time-domain ring- down analysis pyRing [258, 259], based on damped sinusoids, and the parametrized ringdown analysis pSEOB, based on the"}],"limit":50,"offset":0}