N. D. Ramesh Bhat¹¹, Zu-Cheng Chen^12,13, Yi Feng¹⁴, George Hobbs⁴, Agastya Kapur⁴, Richard N. Manchester⁴, Rami Mandow^15,4, Saurav Mishra¹⁶, Daniel J. Reardon^16,17, Christopher J. Russell¹⁸, Ryan M. Shannon^16,17, Shuangqiang Wang^19,20, Lei Zhang^21,16, Songbo Zhang^22,4, and Xingjiang Zhu^23,24,25 (PPTA Collaboration)

• ¹Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, 08193 Bellaterra (Barcelona), Spain
• ²II. Institute of Theoretical Physics, Universität Hamburg, 22761 Hamburg, Germany
• ³Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
• ⁴Australia Telescope National Facility, CSIRO Space and Astronomy, PO Box 76, Epping, NSW 1710, Australia
• ⁵Donostia International Physics Center, Basque Country UPV/EHU, San Sebastian, E-48080, Spain
• ⁶Department of Physics and Jockey Club Institute for Advanced Study, The Hong Kong University of Science and Technology, Hong Kong S.A.R., China
• ⁷Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
• ⁸Center for High Energy Physics, Peking University, Beijing 100871, China
• ⁹School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
• ¹⁰Beijing Laser Acceleration Innovation Center, Huairou, Beijing, 101400, China
• ¹¹International Centre for Radio Astronomy Research, Curtin University, Bentley, West Australia 6102, Australia
• ¹²Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, Hunan 410081, China
• ¹³Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, Hunan 410081, China
• ¹⁴Research Center for Astronomical Computing, Zhejiang Laboratory, 311121 Hangzhou, Zhejiang, China
• ¹⁵Department of Physics and Astronomy and MQ Research Centre in Astronomy, Astrophysics and Astrophotonics, Macquarie University, New South Wales 2109, Sydney, Australia
• ¹⁶Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia
• ¹⁷ ARC Centre of Excellence for Gravitational Wave Astronomy
• ¹⁸CSIRO Scientific Computing, Australian Technology Park, Locked Bag 9013, Alexandria, New South Wales 1435, Australia
• ¹⁹Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China
• ²⁰Australia Telescope National Facility, CSIRO, Space and Astronomy, PO Box 76, Epping, NSW 1710, Australia
• ²¹National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100101, China
• ²²Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China
• ²³Department of Physics, Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519087, China
• ²⁴Institute for Frontier in Astronomy and Astrophysics, Beijing Normal University, Beijing 102206, China
• ²⁵Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, China

• ^*These authors contributed equally to this work.
• ^†Contact author: taoliu@ust.hk
• ^‡Contact author: renjing@ihep.ac.cn