Year: 2023
Type: article
Abstract: Detection and parameter inference of gravitational-wave signals from compact mergers rely on the comparison of the incoming detector strain data dðtÞ to waveform templates for the gravitational-wave strain hðtÞ that ultimately rely on the resolution of Einstein's equations via numerical relativity simulations.These, however, commonly output a quantity known as the Newman-Penrose scalar ψ 4 ðtÞ which, under the Bondi gauge, is related to the gravitational-wave strain by ψ 4 ðtÞ ¼ d 2 hðtÞ=dt 2 .Therefore, obtaining strain templates involves an integration process that introduces artifacts that need to be treated in a rather manual way.By taking second-order finite differences on the detector data and inferring the corresponding background noise distribution, we develop a framework to perform gravitational-wave data analysis directly using ψ 4 ðtÞ templates.We first demonstrate this formalism, and the impact of integration artifacts in strain templates, through the recovery of numerically simulated signals from head-on collisions of Proca stars injected in Advanced LIGO noise.Next, we reanalyze the event GW190521 under the hypothesis of a Proca-star merger, obtaining results equivalent to those previously published [Phys. Rev. Lett. 126, 081101 (2021)], where we used the classical strain framework.We find, however, that integration errors would strongly impact our analysis if GW190521 was 4 times louder.Finally, we show that our framework fixes significant biases in the interpretation of the high-mass gravitational-wave trigger S200114f arising from the usage of strain templates.We remove the need to obtain strain waveforms from numerical relativity simulations, avoiding the associated systematic errors.
Source: Physical Review X
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,200
Funders: National Science and Technology Council, National Science Foundation, “la Caixa” Foundation, CERN, Istituto Nazionale di Fisica Nucleare Sezione di Padova, European Commission, National Research Foundation, Ministry of Education, Culture, Sports, Science and Technology, Academia Sinica, Research Grants Council, University Grants Committee, Generalitat Valenciana, National Research Foundation of Korea, Max-Planck-Gesellschaft, Ministry of Education, India, Centre National de la Recherche Scientifique, Ministerio de Ciencia e Innovación, Istituto Nazionale di Fisica Nucleare, Ministry of Science and ICT, South Korea, Center for Research and Development in Mathematics and Applications, Fundación Bancaria Caixa d'Estalvis i Pensions de Barcelona, National Science and Technology Council, Horizon 2020 Framework Programme, HORIZON EUROPE Framework Programme, Science and Technology Facilities Council, Australian Research Council, Japan Society for the Promotion of Science, Fundação para a Ciência e a Tecnologia, Agencia Estatal de Investigación, H2020 Marie Skłodowska-Curie Actions, Ministerio de Universidades, NextGenerationEU
Awards: G1024812812, G1029501507, G1086179170, G118516010, The Operation and Maintenance of the Laser Interferometer Gravitational Wave Observatory (LIGO), G1255325603, G1397148809, G1419670400, Partículas de matéria escura ultra-leves, sombras de buracos negros e ondas gravitacionais, G1603360139, G1610718637, G1650125035, G1657418792, G1690109813, Campos fundamentais e objectos compactos: teoria e fenomenologia astrofísica, Junior Leader la Caixa Postdoctoral Fellowship Programme: Shaping the new generation of leaders in research, G1918719652, G2290189609, The Construction of the Advanced Laser Interferometer Gravitational Wave Observatory (AdvLIGO), G2367368587, G2436355136, G2469431069, G253812421, G2556184556, Centro de Investigação e Desenvolvimento em Matemática e Aplicações, G2636502879, G2813568340, G2936742398, G302436118, G3069120617, G306962499, G310874012, G3339216277, G3345895242, G3461949579, Testando a hipótese de Kerr com ondas e lentes gravitacionais, G3477743816, G3595636137, G3660205263, G375528091, G3783317134, G3784532101, G3803561910, Junior Leader la Caixa Postdoctoral Fellowship Programme: Shaping the new generation of leaders in research, G4020219729, G403999988, G4100379140, G4196625222, G4232096390, G434337789, G4395959759, G4479591372, G4493332189, G4517594230, G46803926, G490073602, G4918301864, G4937468798, G4944594896, G4993383890, Ondas gravitacionais e buracos negros como detetores de partículas de matéria escura ultra-leve, G5065677113, G5178665745, G5454278309, G5601225551, G5657305899, G5769737447, G5788466760, G5805502524, G5808102969, G5995538525, G6069682234, G6224565063, G6230795418, G6343838365, G659196267, G683931746, G6876561664, G6999940458, G7015168732, G7124829091, G7184583013, G7189308598, G7434936867, G7435505310, G7436585672, G7685134749, G7731791180, G7825191908, G7838040555, G8178315791, Fundamental fields and compact objects: theory and astrophysical phenomenology, G8394465279, G8473735026, G8512683158, G865820494, G9644609
OpenAlex ID: W4389613091