KK
Keiko Kokeyama
gr-qcastro-ph.HEastro-ph.IMastro-ph.COphysics.ins-detphysics.opticshep-phastro-phData analysisElectromagnetic counterparts
On Valency
published · living versionsW_6wg6ys2a·v1 · currentpublished
A Broadband Room-Temperature Design for the Einstein Telescope
with Teng Zhang, Amit Singh Ubhi, Huan Yang, Alan V. Cumming +19
1 version
Preprints & journals
165 papers in the corpus · 2006–2026Direct Multimodel Dark Matter Search with Gravitational-Wave Interferometers Using Data from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run.42854116 · Abac, A G, Abouelfettouh, I, Acernese, F et al.2026 · 0 citationsPhysical review letters. 2026;137(13):131001
Updated Upper Limits on the Isotropic Gravitational-Wave Background from LIGO, Virgo, and KAGRA Data through April 20252608.23477v1 · A. G. Abac, A. Abe, I. Abouelfettouh et al.2026 · 0 citationsarXiv
GW240925 and GW250207: Astrophysical Calibration of Gravitational Wave Detectors.42675396 · Abac, A G, Abouelfettouh, I, Acernese, F et al.2026 · 2 citationsPhysical review letters. 2026;137(7):071401
Constraints on ultralight bosons from merging binary and remnant black holes observed during the second and third parts of the fourth LIGO-Virgo-KAGRA observing run2608.11620v1 · A. G. Abac, A. Abe, I. Abouelfettouh et al.2026 · 0 citationsarXiv
LIGO A: Detector Design and Science Prospects Beyond A+2608.11673v1 · L. Sun, K. Kuns, B. J. J. Slagmolen et al.2026 · 0 citationsarXiv
GWTC-5.0: Tests of General Relativity2607.19293v1 · A. G. Abac, A. Abe, I. Abouelfettouh et al.2026 · 0 citationsarXiv
Sub-Torque-Balance Upper Limits on Continuous Gravitational Waves from Scorpius X-12607.07765v1 · the Precision Ephemerides for Gravitational-Wave Searches, I. Abouelfettouh, F. Acernese et al.2026 · 0 citationsarXiv
A Polarization-Decomposed Method for Simulating Inhomogeneous Birefringence in Laser-Interferometric Gravitational-Wave Detectors2606.08943v1 · Haoyu Wang, Yuta Michimura, Keiko Kokeyama et al.2026 · 0 citationsarXiv
Open Data from LIGO, Virgo, and KAGRA through the Second Part of the Fourth Observing Run2605.27090v2 · A. G. Abac, A. Abe, I. Abouelfettouh et al.2026 · 0 citationsarXiv
GWTC-5.0: An Introduction to Version 5.0 of the Gravitational-Wave Transient Catalog2605.27223v2 · A. G. Abac, A. Abe, I. Abouelfettouh et al.2026 · 0 citationsarXiv
GWTC-5.0: Methods for Identifying and Characterizing Gravitational-wave Transients2605.27224v2 · A. G. Abac, A. Abe, I. Abouelfettouh et al.2026 · 0 citationsarXiv
GWTC-5.0: Observations from the Second Part of the Fourth LIGO-Virgo-KAGRA Observing Run and Updates to the Gravitational-Wave Transient Catalog2605.27225v3 · A. G. Abac, A. Abe, I. Abouelfettouh et al.2026 · 0 citationsarXiv
GWTC-5.0: Population Properties of Merging Compact Binaries2605.27226v2 · A. G. Abac, A. Abe, I. Abouelfettouh et al.2026 · 0 citationsarXiv
GWTC-5.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation2605.27227v2 · A. G. Abac, A. Abe, I. Abouelfettouh et al.2026 · 0 citationsarXiv
Tabletop experimental demonstration of a heterodyne polarimetry method for in situ substrate birefringence characterization in gravitational wave detectors.42268081 · Tanioka, Satoshi, Pearce, Terri, Michimura, Yuta et al.2026 · 0 citationsApplied optics. 2026;65(14):4762-4770
Searches for Binary Mergers with Sub-solar Mass Components in Data from the First Part of LIGO--Virgo--KAGRA's Fourth Observing Run2605.05444v2 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2026 · 0 citationsarXiv
Quantum noise from vacuum field injection in optical cavities with diffraction-related loss.42029220 · Umemura, Kurumi, Ishikawa, Tomohiro, Tsuji, Kenji et al.2026 · 0 citationsApplied optics. 2026;65(12):4107-4116
Searches for Continuous Gravitational Waves from Supernova Remnants in the first part of the LIGO-Virgo-KAGRA Fourth Observing run2603.25808v2 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2026 · 2 citationsThe Astrophysical Journal, 1004 204 (2026)
Narrowband searches for continuous gravitational waves from known pulsars in the first two parts of the fourth LIGO--Virgo--KAGRA observing run2603.25938v2 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2026 · 1 citationThe Astrophysical Journal, 1005:221, 2026 July 10
GWTC-4.0: Tests of General Relativity. I. Overview and General Tests2603.19019v1 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2026 · 1 citationarXiv
GWTC-4.0: Tests of General Relativity. II. Parameterized Tests2603.19020v2 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2026 · 1 citationarXiv
GWTC-4.0: Tests of General Relativity. III. Tests of the Remnants2603.19021v1 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2026 · 1 citationarXiv
All-sky Searches for Continuous Gravitational Waves from Isolated Neutron Stars in the Data from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run2603.14168v1 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2026 · 0 citationsarXiv
Deep Search for Joint Sources of Gravitational Waves and High-Energy Neutrinos with IceCube During the Third Observing Run of LIGO and Virgo2601.07595v3 · R. Abbasi, M. Ackermann, J. Adams et al.2026 · 0 citationsarXiv
Constraints on gravitational waves from the 2024 Vela pulsar glitch2512.17990v2 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 1 citationThe Astrophysical Journal 1005:12 (2026)
Search for planetary-mass ultra-compact binaries using data from the first part of the LIGO--Virgo--KAGRA fourth observing run2511.19911v3 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 0 citationsPhys. Rev. D 114, 022005 (2026)
All-sky search for continuous gravitational-wave signals from unknown neutron stars in binary systems in the first part of the fourth LIGO-Virgo-KAGRA observing run2511.16863v2 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 0 citationsarXiv
Cosmological and High Energy Physics implications from gravitational-wave background searches in LIGO-Virgo-KAGRA's O1-O4a runs2510.26848v3 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 0 citationsPhys. Rev. X 16, 041023 (2026)
GW241011 and GW241110: Exploring Binary Formation and Fundamental Physics with Asymmetric, High-Spin Black Hole Coalescence2510.26931v1 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 34 citationsAstrophys. J. Letters, 993, L21 (2025)
Directional Search for Persistent Gravitational Waves: Results from the First Part of LIGO-Virgo-KAGRA's Fourth Observing Run2510.17487v1 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 3 citationsPhys.Rev.D 114 (2026) 2, 022001
Quantum Noise Reduction in the Space-based Gravitational Wave Antenna DECIGO Using Optical Springs and Homodyne Detection scheme2509.17372v2 · Kenji Tsuji, Tomohiro Ishikawa, Kentaro Komori et al.2025 · 1 citationarXiv
Jiggled interferometer: Ground-based gravitational wave detector using rapidly-repeated free-falling test masses2509.12095v2 · Shoki Iwaguchi, Bin Wu, Kurumi Umemura et al.2025 · 0 citationsarXiv
GW250114: Testing Hawking's Area Law and the Kerr Nature of Black Holes.41004747 · Abac, A G, Abouelfettouh, I, Acernese, F et al.2025 · 130 citationsPhysical review letters. 2025;135(11):111403
GW230814: investigation of a loud gravitational-wave signal observed with a single detector2509.07348v2 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 9 citationsAstrophys.J.Lett. 1004 (2026) 2, L23
Directed searches for gravitational waves from ultralight vector boson clouds around merger remnant and galactic black holes during the first part of the fourth LIGO-Virgo-KAGRA observing run2509.07352v3 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 1 citationarXiv
GWTC-4.0: An Introduction to Version 4.0 of the Gravitational-Wave Transient Catalog2508.18080v3 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 69 citationsThe Astrophysical Journal Letters, 2025, Volume 995, Number 1
GWTC-4.0: Methods for Identifying and Characterizing Gravitational-wave Transients2508.18081v3 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 24 citationsThe Astrophysical Journal Letters, 2026, Volume 1004, Number 2
All-sky search for long-duration gravitational-wave transients in the first part of the fourth LIGO-Virgo-KAGRA Observing run2507.12282v2 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 3 citationsPhys. Rev. D 113, 082004 (2026)
GW231123: a Binary Black Hole Merger with Total Mass 190-265 2507.08219v3 · A. G. Abac, I. Abouelfettouh, F. Acernese et al.2025 · 128 citationsApJL 993 L25 (2025)
Development of a polarimetry method toward in situ substrate birefringence characterization of ground-based gravitational wave detectors.40742226 · Tanioka, Satoshi, Pearce, Terri, Kokeyama, Keiko2025 · 1 citationThe Review of scientific instruments. 2025;96(7)
Identification of Noise-Associated Glitches in KAGRA O3GK with Hveto2506.21021v1 · T. Akutsu, M. Ando, M. Aoumi et al.2025 · 0 citationsProg Theor Exp Phys (2025)
Proof-of-Principle Experiment on a Displacement-Noise-Free Neutron Interferometer for Gravitational Wave Detection2505.17146v3 · Shoki Iwaguchi, Takuhiro Fujiie, Taro Nambu et al.2025 · 0 citationsarXiv
Search for continuous gravitational waves from known pulsars in the first part of the fourth LIGO-Virgo-KAGRA observing run2501.01495v2 · A. G. Abac, R. Abbott, I. Abouelfettouh et al.2025 · 19 citationsAstrophys.J. 983 (2025) 2, 99
Search for gravitational waves emitted from SN 2023ixf2410.16565v2 · A. G. Abac, R. Abbott, I. Abouelfettouh et al.2024 · 15 citationsApJ 985 183 (2025)
Swift-BAT GUANO follow-up of gravitational-wave triggers in the third LIGO-Virgo-KAGRA observing run2407.12867v2 · Gayathri Raman, Samuele Ronchini, James Delaunay et al.2024 · 2 citationsApJ, Volume 980, 2025, 207
Observation of Gravitational Waves from the Coalescence of a Compact Object and a Neutron Star2404.04248v3 · A. G. Abac, R. Abbott, I. Abouelfettouh et al.2024 · 212 citationsAstrophys. J. Lett. 970, L34 (2024)
Ultralight vector dark matter search using data from the KAGRA O3GK run2403.03004v1 · A. G. Abac, R. Abbott, H. Abe et al.2024 · 21 citationsarXiv
Characterisation of birefringence inhomogeneity of KAGRA sapphire mirrors from transmitted wavefront error measurements2402.18006v3 · Haoyu Wang, Yoichi Aso, Matteo Leonardi et al.2024 · 0 citationsarXiv
A Joint Fermi-GBM and Swift-BAT Analysis of Gravitational-Wave Candidates from the Third Gravitational-wave Observing Run2308.13666v1 · C. Fletcher, J. Wood, R. Hamburg et al.2023 · 10 citationsarXiv
Search for Eccentric Black Hole Coalescences during the Third Observing Run of LIGO and Virgo2308.03822v1 · A. G. Abac, R. Abbott, H. Abe et al.2023 · 45 citationsarXiv
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