期刊
ASTROPHYSICAL JOURNAL
卷 932, 期 2, 页码 -出版社
IOP Publishing Ltd
DOI: 10.3847/1538-4357/ac6ad0
关键词
Gravitational wave astronomy; Neutron stars; Pulsars
资金
- NSF's LIGO Laboratory - National Science Foundation
- Italian Istituto Nazionale di Fisica Nucleare (INFN)
- French Centre National de la Recherche Scientifique (CNRS)
- Netherlands Organization for Scientific Research (NWO)
- Council of Scientific and Industrial Research of India
- Department of Science and Technology, India
- Science & Engineering Research Board (SERB), India
- Ministry of Human Resource Development, India
- Spanish Agencia Estatal de Investigacion (AEI)
- Spanish Ministerio de Ciencia e Innovacion
- Ministerio de Universidades, the Conselleria de Fons Europeus, Universitat i Cultura
- Direccio General de Politica Universitaria i Recerca del Govern de les Illes Balears
- Conselleria d'Innovacio Universitats
- Ciencia i Societat Digital de la Generalitat Valenciana
- CERCA Programme Generalitat de Catalunya, Spain
- National Science Centre of Poland
- European Union-European Regional Development Fund
- Foundation for Polish Science (FNP)
- Swiss National Science Foundation (SNSF)
- Russian Foundation for Basic Research
- Russian Science Foundation
- European Commission
- European Social Funds (ESF)
- European Regional Development Funds (ERDF)
- Royal Society, the Scottish Funding Council
- Scottish Universities Physics Alliance
- Hungarian Scientific Research Fund (OTKA)
- French Lyon Institute of Origins (LIO)
- Belgian Fonds de la Recherche Scientifique (FRSFNRS)
- Actions de Recherche Concertees (ARC)
- Fonds Wetenschappelijk Onderzoek-Vlaanderen (FWO), Belgium
- Paris Ile-de-France Region
- National Research, Development and Innovation Office Hungary (NKFIH)
- National Research Foundation of Korea
- Natural Science and Engineering Research Council Canada
- Canadian Foundation for Innovation (CFI)
- Brazilian Ministry of Science, Technology, and Innovations
- International Center for Theoretical Physics South American Institute for Fundamental Research (ICTP-SAIFR)
- Research Grants Council of Hong Kong
- National Natural Science Foundation of China (NSFC)
- Leverhulme Trust
- Research Corporation
- Ministry of Science and Technology (MOST), Taiwan
- United States Department of Energy
- Kavli Foundation
- MEXT
- JSPS Leading-edge Research Infrastructure Program
- JSPS [26000005, 2905: JP17H06358, JP17H06361, JP17H06364, 17H06133, 20H05639, 20A203: JP20H05854]
- Institute for Cosmic Ray Research, University of Tokyo in Korea
- National Research Foundation (NRF) in Korea
- Computing Infrastructure Project of KISTI-GSDC in Korea
- Korea Astronomy and Space Science Institute (KASI) in Korea
- Ministry of Science and ICT (MSIT) in Korea
- Academia Sinica (AS) in Taiwan [AS-CDA-105-M06]
- AS Grid Center (ASGC) in Taiwan [AS-CDA-105-M06]
- Ministry of Science and Technology (MoST) in Taiwan [AS-CDA-105-M06]
- Advanced Technology Center (ATC) of NAOJ
- Mechanical Engineering Center of KEK
- Canada Foundation for Innovation (CFI) 2012 Leading Edge Fund [31170]
- province of British Columbia
- province of Quebec
- province of Ontario
- CFI 2015 Innovation Fund [33213]
- Dunlap Institute for Astronomy and Astrophysics at the University of Toronto
- Canadian Institute for Advanced Research (CIFAR), McGill University
- NSERC RTI-1 grant [EQPEQ 458893-2014]
- WestGrid
- Compute Canada
- Natural Sciences and Engineering Research Council of Canada (NSERC) [CITA 490888-16]
- Canadian Institute for Advanced Research
- UBC Four Year Fellowship [6456]
- EPSRC/STFC fellowship [EP/T017325/1]
- ANID/FONDECYT [1171421, 1211964]
- NASA [80NSSC19K1444, 80NSSC21K0091]
- NASA through the NICER mission
- NASA through the Astrophysics Explorers Program
This paper presents a coherent search for continuous gravitational waves from eighteen pulsars using data from LIGO and Virgo's third observing run (O3). The study finds no evidence for continuous gravitational waves and sets upper limits on the strain amplitude for each target. The search also examines long-duration transient gravitational waves in the aftermath of pulsar glitches, reporting two marginal outliers but finding no clear evidence for such emission.
Isolated neutron stars that are asymmetric with respect to their spin axis are possible sources of detectable continuous gravitational waves. This paper presents a fully coherent search for such signals from eighteen pulsars in data from LIGO and Virgo's third observing run (O3). For known pulsars, efficient and sensitive matched-filter searches can be carried out if one assumes the gravitational radiation is phase-locked to the electromagnetic emission. In the search presented here, we relax this assumption and allow both the frequency and the time derivative of the frequency of the gravitational waves to vary in a small range around those inferred from electromagnetic observations. We find no evidence for continuous gravitational waves, and set upper limits on the strain amplitude for each target. These limits are more constraining for seven of the targets than the spin-down limit defined by ascribing all rotational energy loss to gravitational radiation. In an additional search, we look in O3 data for long-duration (hours-months) transient gravitational waves in the aftermath of pulsar glitches for six targets with a total of nine glitches. We report two marginal outliers from this search, but find no clear evidence for such emission either. The resulting duration-dependent strain upper limits do not surpass indirect energy constraints for any of these targets.
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