Comparing Recent Pulsar Timing Array Results on the Nanohertz Stochastic Gravitational-wave Background
文献类型：期刊论文
| 作者 | Agazie,G.137; Antoniadis,J.135,136; Anumarlapudi,A.137; Archibald,A. M.134; Arumugam,P.133; Arumugam,S.132; Arzoumanian,Z.131; Askew,J.129,130; Babak,S.128; Bagchi,M.126,127 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2024-04-29 |
| 卷号 | 966期号:1页码:105 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad36be |
| 产权排序 | 134 |
| 英文摘要 | Abstract The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohertz gravitational-wave background (GWB). Given that each PTA made different choices in modeling their data, we perform a comparison of the GWB and individual pulsar noise parameters across the results reported from the PTAs that constitute the International Pulsar Timing Array (IPTA). We show that despite making different modeling choices, there is no significant difference in the GWB parameters that are measured by the different PTAs, agreeing within 1σ. The pulsar noise parameters are also consistent between different PTAs for the majority of the pulsars included in these analyses. We bridge the differences in modeling choices by adopting a standardized noise model for all pulsars and PTAs, finding that under this model there is a reduction in the tension in the pulsar noise parameters. As part of this reanalysis, we “extended” each PTA’s data set by adding extra pulsars that were not timed by that PTA. Under these extensions, we find better constraints on the GWB amplitude and a higher signal-to-noise ratio for the Hellings–Downs correlations. These extensions serve as a prelude to the benefits offered by a full combination of data across all pulsars in the IPTA, i.e., the IPTA’s Data Release 3, which will involve not just adding in additional pulsars but also including data from all three PTAs where any given pulsar is timed by more than a single PTA. |
| 资助项目 | University of Manchester (UK) ; University of Bielefeld ; University of Paris (FRA) ; Foundation for Research and Technology, Hellas ; National Science Foundation (NSF) Physics Frontiers Center[1430284] ; National Science Foundation (NSF) Physics Frontiers Center[2020265] ; Gordon and Betty Moore Foundation[2114721] ; NSERC ; CIFAR ; Australian Research Council (ARC) Centre of Excellence for Gravitational Wave Discovery[CE170100004] ; European Research Council ; Large European Array for Pulsars (LEAP)[227947] ; Max-Planck-Institut fur Radioastronomie (MPIfR) at Effelsberg in Germany[ST/T000414/1] ; UK's Science and Technology Facilities Council (STFC)[ST/W000946/1] ; French Centre National de la Recherche Scientifique (CNRS) ; Region Centre in France ; Programme National de Cosmologie and Galaxies (PNCG)[CNRS/INSU-IN2P3-INP] ; CNES, France ; Agence Nationale de la Recherche[ANR-18-CE31-0015] ; Netherlands Foundation for Scientific Research (NWO) - Department of University and Research (MIUR) ; Italian Space Agency (ASI) ; Autonomous Region of Sardinia (RAS) ; National Institute for Astrophysics (INAF) ; NSF[1847938] ; University of Central Florida ; NSF - Australian Government ; Swinburne University of Technology ; National Collaborative Research Infrastructure Strategy (NCRIS) ; Advanced Computing Center for Research and Education (ACCRE) at Vanderbilt University, Nashville, TN - Centre National de la Recherche Scientifique ; National SKA program of China[2020SKA0120100] ; Max-Planck Partner Group[NSFC 11690024] ; European Commission[101094354] ; Stavros Niarchos Foundation (SNF) ; Hellenic Foundation for Research and Innovation (HFRI)[01431] ; Paris Ile-de-France Region ; European Union[818691] ; European Research Council (ERC)[610058] ; STFC doctoral training grant[ST/T506291/1] ; Royal Society ; Wolfson Foundation - Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)[PO 2758/1-1] ; Alexander von Humboldt foundation in Germany ; INAF ; INAF Large Grant[2022] ; Special Account for Research Funds of the Hellenic Open University (ELKE-HOU) under the research program GRAVPUL[319/10-10-2022] ; Dutch National Science Agenda ; Italian Ministry of Education, University and Research[2017SYRTCN] ; Raja Ramanna Chair fellowship of the Department of Atomic Energy, Government of India[3/3401] ; Raja Ramanna Chair fellowship of the Department of Atomic Energy, Government of India[00 004] ; Raja Ramanna Chair fellowship of the Department of Atomic Energy, Government of India[27 02 31] ; Raja Ramanna Chair fellowship of the Department of Atomic Energy, Government of India[1002//2/2023/RRC/RD-II/13886] ; Department of Atomic Energy, Government of India ; JSPS KAKENHI[20J20509] ; Bilateral Joint Research Projects of JSPS ; ISM Cooperative Research Program[2021-ISMCRP-2017] ; CSIR fellowship[09/1001(12656)/2021-EMR-I] ; CSIR fellowship[T-641] ; Birla Institute of Technology & Science Institute fellowship ; JSPS Overseas Challenge Program for Young Researchers ; South African Research Chairs Initiative of the Department of Science and Technology ; National Research Foundation of South Africa ; National Science Foundation ; Research Corporation for Science Advancement[27553] ; Sloan Fellowship ; George and Hannah Bolinger Memorial Fund in the College of Science at Oregon State University ; Vanderbilt Initiative in Data Intensive Astrophysics (VIDA) Fellowship ; Caltech and Jet Propulsion Laboratory President's and Director's Research and Development Fund ; Sloan Foundation ; NSF through the Grote Reber Fellowship Program ; NASA through the NASA Hubble Fellowship Program[HST-HF2-51453.001] ; Space Telescope Science Institute[NAS5-26555] ; UBC Four Year Fellowship[6456] ; Naval Research Laboratory by NASA[S-15633Y] ; NSF Astronomy and Astrophysics Grant (AAG)[2009468] ; NASA[80GSFC21M0002] ; NSF CAREER award[2146016] ; Simons Foundation ; National Science Foundation Graduate Research Fellowship[DGE2139292] ; Larry W. Martin and Joyce B. O'Neill Endowed Fellowship in the College of Science at Oregon State University ; National Aeronautics and Space Administration[80NM0018D0004] ; Deutsche Forschungsgemeinschaft[Strategy-EXC 2121 Quantum Universe-390833306] ; BHI - John Templeton Foundation ; Gordon and Betty Moore Foundation - University of Toronto ; Eotvos Lorand Research Network (ELKH) ; ONR 6.1 basic research funding ; Texas Tech University ; NSF Astronomy and Astrophysics Postdoctoral Fellowship[AST-2202388] ; BGU (Kreitman fellowship) ; Council for Higher Education and Israel Academy of Sciences and Humanities (Excellence fellowship) ; CIERA ; Adler Planetarium ; Brinson Foundation through a CIERA-Adler postdoctoral fellowship ; ARC Future Fellowship[FT190100155] ; Australian Research Council Discovery Early Career Award[DE210101738] ; Australian Government[827103] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | IOP:APJ_966_1_105 |
| 出版者 | The American Astronomical Society |
| 资助机构 | University of Manchester (UK) ; University of Bielefeld ; University of Paris (FRA) ; Foundation for Research and Technology, Hellas ; National Science Foundation (NSF) Physics Frontiers Center ; Gordon and Betty Moore Foundation ; NSERC ; CIFAR ; Australian Research Council (ARC) Centre of Excellence for Gravitational Wave Discovery ; European Research Council ; Large European Array for Pulsars (LEAP) ; Max-Planck-Institut fur Radioastronomie (MPIfR) at Effelsberg in Germany ; UK's Science and Technology Facilities Council (STFC) ; French Centre National de la Recherche Scientifique (CNRS) ; Region Centre in France ; Programme National de Cosmologie and Galaxies (PNCG) ; CNES, France ; Agence Nationale de la Recherche ; Netherlands Foundation for Scientific Research (NWO) - Department of University and Research (MIUR) ; Italian Space Agency (ASI) ; Autonomous Region of Sardinia (RAS) ; National Institute for Astrophysics (INAF) ; NSF ; University of Central Florida ; NSF - Australian Government ; Swinburne University of Technology ; National Collaborative Research Infrastructure Strategy (NCRIS) ; Advanced Computing Center for Research and Education (ACCRE) at Vanderbilt University, Nashville, TN - Centre National de la Recherche Scientifique ; National SKA program of China ; Max-Planck Partner Group ; European Commission ; Stavros Niarchos Foundation (SNF) ; Hellenic Foundation for Research and Innovation (HFRI) ; Paris Ile-de-France Region ; European Union ; European Research Council (ERC) ; STFC doctoral training grant ; Royal Society ; Wolfson Foundation - Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Alexander von Humboldt foundation in Germany ; INAF ; INAF Large Grant ; Special Account for Research Funds of the Hellenic Open University (ELKE-HOU) under the research program GRAVPUL ; Dutch National Science Agenda ; Italian Ministry of Education, University and Research ; Raja Ramanna Chair fellowship of the Department of Atomic Energy, Government of India ; Department of Atomic Energy, Government of India ; JSPS KAKENHI ; Bilateral Joint Research Projects of JSPS ; ISM Cooperative Research Program ; CSIR fellowship ; Birla Institute of Technology & Science Institute fellowship ; JSPS Overseas Challenge Program for Young Researchers ; South African Research Chairs Initiative of the Department of Science and Technology ; National Research Foundation of South Africa ; National Science Foundation ; Research Corporation for Science Advancement ; Sloan Fellowship ; George and Hannah Bolinger Memorial Fund in the College of Science at Oregon State University ; Vanderbilt Initiative in Data Intensive Astrophysics (VIDA) Fellowship ; Caltech and Jet Propulsion Laboratory President's and Director's Research and Development Fund ; Sloan Foundation ; NSF through the Grote Reber Fellowship Program ; NASA through the NASA Hubble Fellowship Program ; Space Telescope Science Institute ; UBC Four Year Fellowship ; Naval Research Laboratory by NASA ; NSF Astronomy and Astrophysics Grant (AAG) ; NASA ; NSF CAREER award ; Simons Foundation ; National Science Foundation Graduate Research Fellowship ; Larry W. Martin and Joyce B. O'Neill Endowed Fellowship in the College of Science at Oregon State University ; National Aeronautics and Space Administration ; Deutsche Forschungsgemeinschaft ; BHI - John Templeton Foundation ; Gordon and Betty Moore Foundation - University of Toronto ; Eotvos Lorand Research Network (ELKH) ; ONR 6.1 basic research funding ; Texas Tech University ; NSF Astronomy and Astrophysics Postdoctoral Fellowship ; BGU (Kreitman fellowship) ; Council for Higher Education and Israel Academy of Sciences and Humanities (Excellence fellowship) ; CIERA ; Adler Planetarium ; Brinson Foundation through a CIERA-Adler postdoctoral fellowship ; ARC Future Fellowship ; Australian Research Council Discovery Early Career Award ; Australian Government |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6408]  |
| 专题 | 研究单元未命名 新疆天文台_射电天文研究室 |
| 作者单位 | 1.ASTRON, Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, 7991 PD, Dwingeloo, The Netherlands 2.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China 3.National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100101, People's Republic of China 4.Ruhr University Bochum, Faculty of Physics and Astronomy, Astronomical Institute (AIRUB), 44780 Bochum, Germany 5.Adler Planetarium, 1300 S. DuSable Lake Shore Drive, Chicago, IL 60605, USA 6.Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University, Evanston, IL 60208, USA 7.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, People's Republic of China 8.Florida Space Institute, University of Central Florida, 12354 Research Parkway, Partnership 1 Building, Suite 214, Orlando, FL 32826-0650, USA 9.Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), Callinstrasse 38, D-30167, Hannover, Germany 10.Feza Gursey Institute, Bogazici University, Kandilli, 34684, Istanbul, Turkey |
| 推荐引用方式 GB/T 7714 | Agazie,G.,Antoniadis,J.,Anumarlapudi,A.,et al. Comparing Recent Pulsar Timing Array Results on the Nanohertz Stochastic Gravitational-wave Background[J]. The Astrophysical Journal,2024,966(1):105. |
| APA | Agazie,G..,Antoniadis,J..,Anumarlapudi,A..,Archibald,A. M..,Arumugam,P..,...&,.(2024).Comparing Recent Pulsar Timing Array Results on the Nanohertz Stochastic Gravitational-wave Background.The Astrophysical Journal,966(1),105. |
| MLA | Agazie,G.,et al."Comparing Recent Pulsar Timing Array Results on the Nanohertz Stochastic Gravitational-wave Background".The Astrophysical Journal 966.1(2024):105. |
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