All-sky search for short gravitational-wave bursts in the first part of the fourth LIGO-Virgo-KAGRA observing run

Abac, A.G.; Koley, Soumen

doi:10.1103/wjdz-jdby

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All-sky search for short gravitational-wave bursts in the first part of the fourth LIGO-Virgo-KAGRA observing run

Abac, A.G.; Koley, Soumen

2025 • In Physical Review. D, 112 (10), p. 1 - 29

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Keywords :

Nuclear and High Energy Physics

Abstract :

[en] We present a search for short-duration gravitational-wave transients in data from the first eight months of Advanced LIGO-Virgo-KAGRA’s fourth observing run, denoted O4a. We use four analyses which are sensitive to a wide range of potential signals lasting up to a few seconds in the 16–4096 Hz band. Excluding binary black hole merger candidates that were already identified by low-latency analyses, we find no statistically significant evidence for other gravitational-wave transients. We measure the sensitivity of the search for representative signals, including sine-Gaussians, Gaussian pulses, and white-noise bursts with different frequencies and durations, adopting a false alarm rate of 1 per 100 years as detection threshold. Depending on signal type, we find improvements over previous searches by factors of 2 to 10 in terms of sensitivity to strain amplitude and of 90% confidence upper limit on the rate density of sources. We also evaluate a variety of core-collapse supernova models and find that, for some models, the search could have detected gravitational waves from stellar core-collapse throughout the Milky Way. Finally, we consider neutron star f-modes associated with pulsar glitches and find that, assuming a source similar to the Vela Pulsar, the search could have detected a gravitational-wave signal from a glitch with fractional frequency change as small as ∼2 to 6 × 10−5 depending on the neutron star mass.

Disciplines :

Earth sciences & physical geography

Author, co-author :

Abac, A.G.; Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Potsdam, Germany

Koley, Soumen ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Ondes gravitationnelles

Language :

English

Title :

All-sky search for short gravitational-wave bursts in the first part of the fourth LIGO-Virgo-KAGRA observing run

Publication date :

19 November 2025

Journal title :

Physical Review. D

ISSN :

2470-0010

eISSN :

2470-0029

Publisher :

American Physical Society

Volume :

112

Issue :

Pages :

1 - 29

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://link.aps.org/article/10.1103/wjdz-jdby

Funders :

NSF - National Science Foundation
STFC - Science and Technology Facilities Council
MPG - Max-Planck-Gesellschaft zur Förderung der Wissenschaften
ARC - Australian Research Council
CNRS - Centre National de la Recherche Scientifique
NWO - Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministry of Education India
AEI - Agencia Estatal de Investigación
MICINN - Ministerio de Ciencia, Innovación y Universidades
Generalitat Valenciana
CERCA - Centres de Recerca de Catalunya
NCN - Narodowe Centrum Nauki
EC - European Commission
ERDF - European Regional Development Fund
SNF - Schweizerischer Nationalfonds zur Förderung der wissenschaftlichen Forschung
RSF - Russian Science Foundation
ESF - European Social Fund
Royal Society
SFC - Scottish Funding Council
SUPA - Scottish Universities Physics Alliance
OTKA - Hungarian Scientific Research Fund
F.R.S.-FNRS - Fonds de la Recherche Scientifique
FWO - Fonds Wetenschappelijk Onderzoek Vlaanderen
NKFIH - Nemzeti Kutatási, Fejlesztési és Innovációs Hivatal
NRF - National Research Foundation of Korea
NSERC - Natural Sciences and Engineering Research Council
CFI - Canada Foundation for Innovation
MCTI - Ministério da Ciência, Tecnologia e Inovações
ICTP-SAIFR - ICTP South American Institute for Fundamental Research
NSCF - National Natural Science Foundation of China
ISF - Israel Science Foundation
BSF - United States-Israel Binational Science Foundation
Leverhulme Trust
RSCA - Research Corporation for Science Advancement
CONACYT - National Council of Science and Technology
DOE - United States. Department of Energy
Kavli Foundation
MEXT - Ministry of Education, Culture, Sports, Science and Technology
JSPS - Japan Society for the Promotion of Science
KASI - Korea Astronomy and Space Science Institute
Academia Sinica
NAOJ - National Astronomical Observatory of Japan
High Energy Accelerator Research Organization
Simons Foundation

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