Journal
PHYSICAL REVIEW X
Volume 6, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevX.6.041014
Keywords
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Categories
Funding
- United States National Science Foundation (NSF)
- Science and Technology Facilities Council (STFC) of the United Kingdom
- Max-Planck Society (MPS)
- State of Niedersachsen/Germany
- Australian Research Council
- Netherlands Organisation for Scientific Research
- 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 Ministerio de Economia y Competitividad
- Conselleria d'Economia i Competitivitat and Conselleria d'Educacio
- Cultura i Universitats of the Govern de les Illes Balears
- National Science Centre of Poland
- European Commission
- Royal Society
- Scottish Funding Council
- Scottish Universities Physics Alliance
- Hungarian Scientific Research Fund (OTKA)
- Lyon Institute of Origins (LIO)
- National Research Foundation of Korea
- Industry Canada
- Province of Ontario through the Ministry of Economic Development and Innovation
- Natural Science and Engineering Research Council Canada
- Canadian Institute for Advanced Research
- Brazilian Ministry of Science, Technology, and Innovation
- Russian Foundation for Basic Research
- Leverhulme Trust
- Ministry of Science and Technology (MOST), Taiwan
- Kavli Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1028087] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1505373, 1505629, 1307401, 1104371, 1404121, 1608423, 1307489, 1308527] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1404139, 1506360, 1505779, 1207010] Funding Source: National Science Foundation
- STFC [ST/I006242/1, ST/L000954/1, ST/J000019/1, ST/J000345/1, ST/J00166X/1, ST/N005716/1, ST/M004090/1, ST/N000080/1, ST/H002006/1, ST/K000845/1, ST/N005430/1, 1653089, ST/I006269/1, ST/I000887/1, ST/N000633/1, ST/I006285/1, ST/N005406/1, ST/L000326/1, ST/L000946/1, ST/L000962/1, ST/N000072/1, ST/N000064/1, ST/L003465/1, PP/C505791/1, ST/K005014/1, Gravitational Waves, PPA/G/S/2002/00652, ST/N00003X/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/N00003X/1, ST/I006269/1, ST/L000954/1, Gravitational Waves, ST/N000064/1, ST/L000326/1, PPA/G/S/2002/00652, ST/L000946/1, ST/K005014/1, ST/I006285/1 Gravitational Waves, ST/L000962/1 Gravitational Waves, ST/N005430/1, ST/I000887/1, ST/I006285/1, ST/N000072/1, ST/I006242/1, ST/J000345/1 Gravitational Waves, ST/K000845/1, ST/M004090/1, ST/N005406/1, ST/N000080/1, ST/J00166X/1, ST/H002006/1, ST/N005716/1, ST/J000345/1, ST/J000019/1, ST/I000887/1 Gravitational Waves, ST/I006269/1 Gravitational Waves, ST/N000633/1, ST/L000962/1, ST/L003465/1] Funding Source: researchfish
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This paper presents updated estimates of source parameters for GW150914, a binary black-hole coalescence event detected by the Laser Interferometer Gravitational-wave Observatory (LIGO) in 2015 [Abbott et al. Phys. Rev. Lett. 116, 061102 (2016).]. Abbott et al. [Phys. Rev. Lett. 116, 241102 (2016).] presented parameter estimation of the source using a 13-dimensional, phenomenological precessing-spin model (precessing IMRPhenom) and an 11-dimensional nonprecessing effective-onebody (EOB) model calibrated to numerical-relativity simulations, which forces spin alignment (nonprecessing EOBNR). Here, we present new results that include a 15-dimensional precessing-spin waveform model (precessing EOBNR) developed within the EOB formalism. We find good agreement with the parameters estimated previously [Abbott et al. Phys. Rev. Lett. 116, 241102 (2016).], and we quote updated component masses of 35(-3)(+5) M-circle dot and 30(-4)(+3) M-circle dot (where errors correspond to 90% symmetric credible intervals). We also present slightly tighter constraints on the dimensionless spin magnitudes of the two black holes, with a primary spin estimate < 0.65 and a secondary spin estimate < 0.75 at 90% probability. Abbott et al. [Phys. Rev. Lett. 116, 241102 (2016).] estimated the systematic parameter-extraction errors due to waveform-model uncertainty by combining the posterior probability densities of precessing IMRPhenom and nonprecessing EOBNR. Here, we find that the two precessing-spin models are in closer agreement, suggesting that these systematic errors are smaller than previously quoted.
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