Low-latency gravitational wave alert products and their performance at the time of the fourth LIGO-Virgo-KAGRA observing run
Sushant Sharma Chaudhary, Andrew Toivonen, Gaurav Waratkar, Geoffrey Mo, Deep Chatterjee, Sarah Antier, Patrick Brockill, Michael W. Coughlin, Reed Essick, Shao… 展开作者
Sushant Sharma Chaudhary, Andrew Toivonen, Gaurav Waratkar, Geoffrey Mo, Deep Chatterjee, Sarah Antier, Patrick Brockill, Michael W. Coughlin, Reed Essick, Shaon Ghosh, Soichiro Morisaki, Pratyusava Baral, Amanda Baylor, Naresh Adhikari, Patrick Brady, Gareth Cabourn Davies, Tito Dal Canton, Marco Cavaglià, Jolien Creighton, Sunil Choudhary, Yu-Kuang Chu, Patrick Clearwater, Luke Davis, Thomas Dent, Marco Drago, Becca Ewing, Patrick Godwin, Weichangfeng Guo, Chad Hanna, Rachel Huxford, Ian Harry, Erik Katsavounidis, Manoj Kovalam, Alvin K. Y. Li, Ryan Magee, Ethan Marx, Duncan Meacher, Cody Messick, Xan Morice-Atkinson, Alexander Pace, Roberto De Pietri, Brandon Piotrzkowski, Soumen Roy, Surabhi Sachdev, Leo P. Singer, Divya Singh, Marek Szczepanczyk, Daniel Tang, Max Trevor, Leo Tsukada, Verónica Villa-Ortega, Linqing Wen, Daniel Wysocki
Multi-messenger searches for BNS and NSBH mergers are currently one of the most exciting areas of astronomy. The search for joint electromagnetic and neutrino counterparts to GWs has resumed with O4. To support this effort, public semi-automated data products are sent in near real-time and include localization and source properties to guide complementary observations. In preparation for O4, we have conducted a study using a simulated population of compact binaries and a MDC in the form of a real-time replay to optimize and profile the software infrastructure and scientific deliverables. End-to-end performance was tested, including data ingestion, running online search pipelines, performing annotations, and issuing alerts to the astrophysics community. We present an overview of the low-latency infrastructure and the performance of the data products that are now being released during O4 based on the MDC. We report the expected median latency for the preliminary alert of full bandwidth searches (29.5s) and show consistency and accuracy of released data products using the MDC. For the first time, we report the expected median latency for triggers from early warning searches (-3.1s), which are new in O4 and target neutron star mergers during inspiral phase. This paper provides a performance overview for LVK low-latency alert infrastructure and data products using the MDC and serves as a useful reference for the interpretation of O4 detections.
Archival Search for IceCube Sub-TeV Neutrino Counterparts to Sub-Threshold Gravitational Wave Events from the Third Observing Run of the LIGO-Virgo-KAGRA
Bright in the Black: Searching for Electromagnetic Counterparts to Gravitational-Wave Candidates in LIGO-Virgo-KAGRA Observation Runs with AstroSat-CZTI
Searching for gravitational waves from compact binary mergers powering long gamma-ray bursts during LIGO-Virgo-KAGRA's O3 run
Monash University（莫纳什大学）；OzGrav: The ARC Centre of Excellence for Gravitational Wave Discovery（引力波发现ARC卓越中心）；Princeton University（普林斯顿大学）；University of Cambridge（剑桥大学）
Detectability of Gravitational-wave counterparts of EP-FXTs observed during the O4b LIGO-Virgo-KAGRA Observing Run
Gran Sasso Science Institute (GSSI)（格兰萨索科学研究所）；INFN, Laboratori Nazionali del Gran Sasso（意大利国家核物理研究所，格兰萨索国家实验室）；Institute of Space Sciences (ICE, CSIC)（空间科学研究所（ICE, CSIC））；Institut d’Estudis Espacials de Catalunya (IEEC)（加泰罗尼亚空间研究学院（IEEC））；Department of Astrophysics/IMAPP, Radboud University（拉德堡德大学天体物理学/IMAPP系）；INAF – Osservatorio Astronomico di Brera（意大利国家天体物理研究所-布里拉天文台）
Search for continuous gravitational waves from neutron stars in five globular clusters in the first part of the fourth LIGO-Virgo-KAGRA observing run
University of Michigan（密歇根大学）；Universitat de les Illes Balears（巴利阿里群岛大学）；LIGO Livingston Observatory（LIGO利文斯顿天文台）；Instituto Nacional de Pesquisas Espaciais（国家空间研究所）；University of British Columbia（不列颠哥伦比亚大学）；University of Melbourne（墨尔本大学）
Scalar fields around black hole binaries in LIGO-Virgo-KAGRA
Université Catholique de Louvain（天主教鲁汶大学）；Royal Observatory of Belgium（比利时皇家天文台）；University of Amsterdam（阿姆斯特丹大学）；Massachusetts Institute of Technology（麻省理工学院）；Queen Mary University of London（伦敦玛丽女王大学）；University of Oxford（牛津大学）
The Proper Motion of Strongly Lensed Binary Neutron Star Mergers in LIGO/Virgo/Kagra can be Constrained by Measuring Doppler Induced Gravitational Wave Dephasing
How do the LIGO-Virgo-KAGRA's Heavy Black Holes Form? No evidence for core-collapse Intermediate-mass black holes in GWTC-4
Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences（中国科学院紫金山天文台暗物质与空间天文重点实验室）；Institute for Theoretical Physics and Cosmology, Zhejiang University of Technology（浙江工业大学理论物理与宇宙学研究所）；Department of Physics, Anhui Normal University（安徽师范大学物理系）
Constraints on primordial black holes from the first part of LIGO-Virgo-KAGRA fourth observing run
LIGO Laboratory, Massachusetts Institute of Technology（麻省理工学院）；Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology（麻省理工学院）；Institut de Física d’Altes Energies (IFAE), Barcelona Institute of Science and Technology（巴塞罗那科学技术大学）；New York University Abu Dhabi（纽约大学阿布扎比分校）；Keemilise ja Bioloogilise Füüsika Instituut（塔尔图大学化学与生物物理研究所）；Dipartimento di Fisica e Astronomia, Università degli Studi di Padova（帕多瓦大学）；Istituto Nazionale di Fisica Nucleare, Sezione di Padova（意大利国家核物理研究所）；Catalan Institution for Research and Advanced Studies (ICREA)（加泰罗尼亚研究高级学院）
Detecting electromagnetic counterparts to LIGO/Virgo/KAGRA gravitational wave events with DECam: Neutron Star Mergers
Carnegie Mellon University（卡内基梅隆大学）；University of Chicago（芝加哥大学）；University of Ferrara（费拉拉大学）；INFN, Sezione di Ferrara（意大利国家核物理研究所费拉拉分部）；INAF, Osservatorio Astronomico d’Abruzzo（意大利国家天体物理研究所阿布鲁佐天文台）；Universität Potsdam（波茨坦大学）；Max Planck Institute for Gravitational Physics (Albert Einstein Institute)（马克斯·普朗克引力物理学研究所（爱因斯坦研究所））；Utrecht University（乌得勒支大学）；Nikhef（荷兰国家核物理与粒子物理研究所）；California Institute of Technology（加州理工学院）；University of North Carolina at Chapel Hill（北卡罗来纳大学教堂山分校）
The Chinese University of Hong Kong（香港中文大学）；The Inter-University Centre for Astronomy and Astrophysics (IUCAA)（天文学与天体物理学大学间中心）；Kavli Institute for the Physics and Mathematics of the Universe (IPMU)（宇宙物理与数学系卡尔费利研究所）；Utrecht University（乌得勒支大学）；Nikhef – National Institute for Subatomic Physics（荷兰亚原子物理国家研究所）；Pennsylvania State University（宾夕法尼亚州立大学）；Universit'e Catholique de Louvain（天主教鲁汶大学）；Royal Observatory of Belgium（比利时皇家天文台）；Universitat de les Illes Balears（巴利阿里群岛大学）
Merger rate density of stellar-mass binary black holes from young massive clusters, open clusters, and isolated binaries: comparisons with LIGO-Virgo-KAGRA results
Eccentricity constraints disfavor single-single capture in nuclear star clusters as the origin of all LIGO-Virgo-KAGRA binary black holes
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)（马克斯·普朗克引力物理研究所（爱因斯坦研究所））；University of Maryland（马里兰大学）；University of British Columbia（不列颠哥伦比亚大学）；California Institute of Technology（加州理工学院）；LIGO Laboratory（LIGO实验室）；Universitá degli Studi di Milano-Bicocca（米兰比可卡大学）；INFN, Sezione di Milano-Bicocca（意大利国家核物理研究所米兰比可卡分部）
Dark Matter Clumps as Sources of Gravitational-Wave Glitches in LIGO/Virgo/KAGRA data
International Center for Advanced Studies, Universidad de San Martin and CONICET（国际高级研究中心，圣马丁大学及阿根廷科学技术研究委员会）；Illinois Center for Advanced Study of the Universe & Department of Physics, University of Illinois at Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校宇宙高级研究中心及物理系）；Lawrence Livermore National Laboratory（劳伦斯利弗莫尔国家实验室）；Center for AstroPhysical Surveys, National Center for Supercomputing Applications（超级计算应用国家中心天体物理调查中心）
GW231109_235456: A Sub-threshold Binary Neutron Star Merger in the LIGO-Virgo-KAGRA O4a Observing Run?
The Pennsylvania State University（宾夕法尼亚州立大学）；University of Nevada, Las Vegas（内华达大学拉斯维加斯分校）；University of Wisconsin-Milwaukee（威斯康星大学密尔沃基分校）；University of Illinois（伊利诺伊大学）
LIGO-维格罗-KAGRA O4a观测运行中发现一次次阈值双中子星并合，推断质量为1.40-2.24太阳质量，总质量2.95±0.45太阳质量，本地并合率估计为53-342 per cubic gigaparsec per year。
