GWTC-5.0 adds 161 new compact binary coalescence candidates from O4b with p_astro >= 0.5, detailed properties for 104, all binary black holes, for a cumulative total of 390.
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- background 0 −6)∆ 3 χ,0 ˜W−1,0(y)−3ζ∆ χ,1∆2 χ,0 ˜W−1,0(y) + 3∆χ,1 π2 ˜W−1,0(y)−4π ˜W−1,1(y) + 4 ˜W−1,2(y) +O p−4/3 # . (B45) 45 [1] B. Abbott, R. Abbott, T. Abbott, M. Abernathy, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. Adhikari, et al., Physical Review Letters116(2016), ISSN 1079-7114, URLhttp://dx.doi.org/10.1103/PhysRevLett.116.061102. [2] B. Abbott, R. Abbott, T. Abbott, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. Adhikari, V. Adya, et al., Physical Review Letters
- background In recent years, breakthrough progress in gravitational- wave detections and black hole imaging observations has opened new avenues for probing the spacetime structure in the strong-gravity regime. In 2015, the LIGO Scientific Collaboration reported the first direct detection of gravi- tational waves generated by the merger of a binary black hole system [1]. In the ringdown phase after a black hole merger, or in the late-time evolution of a perturbed black hole, the system returns to equilibrium
- background Due to the nature of BHs, they must be studied through gravitational interactions with their sur- roundings, as direct observation is impossible. In the quest for observational evidence confirming the existence of BHs in nature, the detection of gravitational waves provides by the LIGO collaboration robust support for the existence of stellar-mass BHs [ 1]. Regarding supermassive BHs, re- search focuses on the study of galactic nuclei. Type I and II Seyfert galaxies present evidence pointing to t
- background 21622v1 [gr-qc] 23 Apr 2026 1 Introduction Black holes are among the most fascinating objects in modern astrophysics, with their existence supported by a growing body of observational evidence. This is evidenced by gravitational-wave signals from binary black hole mergers captured by the Laser Interferometer Gravitational-Wave Observatory (LIGO) [1], as well as the shadow images of M87* and the Milky Way's center Sgr A* obtained by the EHT [2, 3]. These discoveries not only validate the predicti
- background 24753 [gr-qc] (2025). [2] L. Hernquist, "An Analytical Model for Spherical Galaxies and Bulges," Astrophys. J.356, 359 (1990). [3] B. P. Abbottet al.[LIGO Scientific and Virgo], "Observation of Gravitational Waves from a Binary Black Hole Merger," Phys. Rev. Lett.116, no.6, 061102 (2016) doi:10.1103/PhysRevLett.116.061102 [arXiv:1602.03837 [gr- qc]]. [4] R. Abbottet al.[LIGO Scientific and Virgo], "Tests of general relativity with binary black holes from the second LIGO-Virgo gravitational-wave
- background First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric.Astrophys. J. Lett., 930: L17, 2022. URLhttps://doi.org/10.3847/2041-8213/ac6756. [7] N. Aghanim et al. Planck 2018 results. VI. Cosmological parameters.Astron. Astrophys., 641:A6, 2020. URLhttps://doi.org/10.1051/ 0004-6361/201833910. [Erratum: Astron.Astrophys. 652, C4 (2021)]. [8] B. P. Abbott et al. Observation of Gravitational Waves from a Binary Black Hole Merger.Phys. Rev. Lett., 116:061102, 2016. URLh
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Optimal SSB frame origin for LGWA cuts sampling time by 10x and tightens chirp mass and sky position constraints for stellar-mass binaries beyond LVK performance.
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Detection of GW190814 from the coalescence of a 23 solar-mass black hole and a 2.6 solar-mass compact object, the most unequal-mass binary yet observed with gravitational waves.
GPU-accelerated nested sampling on GW170817 demonstrates that switching to a uniform-in-dL prior shifts the H0 tail and median far more than post-hoc reweighting captures, due to an under-sampled (dL, iota) bimodality.
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Eccentricity posteriors of dynamically captured binaries can be mapped to capture parameters and compared against environment velocity distributions to constrain host and infer decay time.
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A new phase-coherent mapping framework for pulsar timing arrays that preserves the complete complex polarization state of the gravitational-wave sky in compact maps usable for multiple analyses.
Efficient mass transfer in binaries naturally limits the mass of the first-born black hole and produces a sharp drop above 45 solar masses that mimics the pair-instability gap.
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citing papers explorer
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GW190814: Gravitational Waves from the Coalescence of a 23 M$_\odot$ Black Hole with a 2.6 M$_\odot$ Compact Object
Detection of GW190814 from the coalescence of a 23 solar-mass black hole and a 2.6 solar-mass compact object, the most unequal-mass binary yet observed with gravitational waves.
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Inferring host environment properties and gravitational-wave decay time from the eccentricity measurement of dynamically captured binaries
Eccentricity posteriors of dynamically captured binaries can be mapped to capture parameters and compared against environment velocity distributions to constrain host and infer decay time.
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Prospects for multi-messenger discovery of the gravitational-wave background anisotropies via cross-correlation with galaxies
New simulations show that cross-correlating gravitational wave background anisotropies with galaxy distributions can enable discovery at angular scales of 4-6 degrees with next-generation observatories.
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Black Hole Binary Detection Landscape for the Laser Interferometer Lunar Antenna (LILA): Signal-to-Noise Calculations & Science Cases
LILA can detect IMBH binaries at redshifts 20-30, IMRIs, and provide months-to-years early warnings with high-SNR events for gravity tests.