GWTC-4.0: Methods for Identifying and Characterizing Gravitational-wave Transients

@article{abac2026gwtc40,
  title = {{GWTC-4.0: Methods for Identifying and Characterizing Gravitational-wave Transients}},
  author = {Adrian Abac and I. Abouelfettouh and F. Acernese and K. Ackley and S. Adhicary and D. Adhikari and N. Adhikari and R. X. Adhikari and V. K. Adkins and Samsuzzaman Afroz and D. Agarwal and M. Agathos and Maryam Aghaei Abchouyeh and O. D. Aguiar and S. Ahmadzadeh and L. Aiello and A. Ain and P. Ajith and Sarp Akçay and T.Akutsu and Simone Albanesi and R. A. Alfaidi and Ammar Al-Jodah and C. Alléné and A. Allocca and S. Al-Shammari and P. A. Altin and S. Álvarez-López and O. Amarasinghe and A. Amato and Claude Amra and A. Ananyeva and S. B. Anderson and Warren G. Anderson and M. Andia and M. Ando and Tomás Andrade and Marc Andrés-Carcasona and T. Andrić and J. Anglin and Stefano Ansoldi and Javier Mauricio Antelis and S. Antier and M. Aoumi and E. Z. Appavuravther and S. Appert and S. K. Apple and Koji Arai and A. Araya and M. C. Araya and Manuel Arca Sedda and J. S. Areeda and L Argianas and N. Aritomi and F. Armato and S. Armstrong and N. Arnaud and M. Arogeti and Scott Aronson and G. Ashton},
  journal = {The Astrophysical Journal Letters},
  year = {2026},
  month = jun,
  doi = {10.3847/2041-8213/ae447b},
  url = {https://doi.org/10.3847/2041-8213/ae447b},
  note = {CC BY},
}

TY  - JOUR
TI  - GWTC-4.0: Methods for Identifying and Characterizing Gravitational-wave Transients
AU  - Adrian Abac
AU  - I. Abouelfettouh
AU  - F. Acernese
AU  - K. Ackley
AU  - S. Adhicary
AU  - D. Adhikari
AU  - N. Adhikari
AU  - R. X. Adhikari
AU  - V. K. Adkins
AU  - Samsuzzaman Afroz
AU  - D. Agarwal
AU  - M. Agathos
AU  - Maryam Aghaei Abchouyeh
AU  - O. D. Aguiar
AU  - S. Ahmadzadeh
AU  - L. Aiello
AU  - A. Ain
AU  - P. Ajith
AU  - Sarp Akçay
AU  - T.Akutsu
AU  - Simone Albanesi
AU  - R. A. Alfaidi
AU  - Ammar Al-Jodah
AU  - C. Alléné
AU  - A. Allocca
AU  - S. Al-Shammari
AU  - P. A. Altin
AU  - S. Álvarez-López
AU  - O. Amarasinghe
AU  - A. Amato
AU  - Claude Amra
AU  - A. Ananyeva
AU  - S. B. Anderson
AU  - Warren G. Anderson
AU  - M. Andia
AU  - M. Ando
AU  - Tomás Andrade
AU  - Marc Andrés-Carcasona
AU  - T. Andrić
AU  - J. Anglin
AU  - Stefano Ansoldi
AU  - Javier Mauricio Antelis
AU  - S. Antier
AU  - M. Aoumi
AU  - E. Z. Appavuravther
AU  - S. Appert
AU  - S. K. Apple
AU  - Koji Arai
AU  - A. Araya
AU  - M. C. Araya
AU  - Manuel Arca Sedda
AU  - J. S. Areeda
AU  - L Argianas
AU  - N. Aritomi
AU  - F. Armato
AU  - S. Armstrong
AU  - N. Arnaud
AU  - M. Arogeti
AU  - Scott Aronson
AU  - G. Ashton
PY  - 2026
DA  - 2026/06/18
JO  - The Astrophysical Journal Letters
DO  - 10.3847/2041-8213/ae447b
UR  - https://doi.org/10.3847/2041-8213/ae447b
AB  - The Gravitational-Wave Transient Catalog (GWTC) is a collection of candidate gravitational-wave transient signals identified and characterized by the LIGO–Virgo–KAGRA Collaboration. Producing the contents of the GWTC from detector data requires complex analysis methods. These comprise techniques to model the signal; identify the transients in the data; evaluate the quality of the data and mitigate possible instrumental issues; infer the parameters of each transient; compare the data with the waveform models for compact binary coalescences; and handle the large amount of results associated with all of these different analyses. In this paper, we describe the methods employed to produce the catalog’s fourth release, GWTC-4.0, focusing on the analysis of the first part of the fourth observing run of Advanced LIGO, Advanced Virgo and KAGRA.
SN  - 2041-8205
SN  - 2041-8213
ER  -