The second data release from the European Pulsar Timing Array

Antoniadis, John; Arumugam, P.; Arumugam, S.; Babak, S.; Bagchi, Manjari; Nielsen, A.-S. Bak; Bassa, C.; Bathula, Adarsh; Berthereau, A.; Bonetti, Matteo; Bortolas, Elisa; Brook, Paul R.; Burgay, M.; Caballero, R. N.; Chalumeau, A.; Champion, D. J.; Chanlaridis, S.; Chen, Siyuan; Cognard, I.; Dandapat, Subhajit; Deb, Debabrata; Desai, S.; Desvignes, G.; Dhanda-Batra, N.; Dwivedi, C.; Falxa, M.; Ferdman, R. D.; Franchini, Alessia; Gair, J. R.; Goncharov, B.; Gopakumar, A.; Graikou, E.; Grießmeier, J.‐M.; Gualandris, Alessia; Guillemot, L.; Guo, Y. J.; Gupta, Yashwant; Hisano, Shinnosuke; Hu, H.; Iraci, F.; Izquierdo–Villalba, David; Jang, J.; Jawor, J.; Janssen, G. H.; Jessner, A.; Joshi, B. C.; Kareem, F.; Karuppusamy, R.; Keane, E. F.; Keith, M. J.; Kharbanda, D.; Kikunaga, Tomonosuke; Kolhe, Neel; Krämer, M.; Krishnakumar, M. A.; Lackeos, K.; Lee, K. J.; Liu, K.; Liu, Y.; Lyne, A. G.; McKee, James W.; Maan, Y.; Main, Robert; Mickaliger, M. B.; Niţu, I. C.; Nobleson, K.; Paladi, Avinash Kumar; Parthasarathy, A.; Perera, Benetge B. P.; Perrodin, D.; Petiteau, Antoine; Porayko, N. K.; Possenti, A.; Prabu, T.; Leclere, H. Quelquejay; Rana, Prerna; Samajdar, A.; Sanidas, S. A.; Sesana, Alberto; Shaifullah, G.; Singha, Jaikhomba; Speri, Lorenzo; Spiewak, R.; Srivastava, Aman; Stappers, B. W.; Surnis, Mayuresh; Susarla, S. C.; Susobhanan, Abhimanyu; Takahashi, Keitaro; Tarafdar, Pratik; Theureau, G.; Tiburzi, C.; Wateren, E. van der; Vecchio, A.; Krishnan, V. Venkatraman; Verbiest, J. P. W.; Wang, J.; Wang, L.; Wu, Ziwei; Auclair, Pierre; Barausse, Enrico; Caprini, Chiara; Crisostomi, Marco; Fastidio, F.; Khizriev, T.; Middleton, H.; Neronov, A.; Постнов, К. А.; Pol, Alberto Roper; Semikoz, D.; Smarra, C.; Steer, D. A.; Truant, Riccardo J.; Valtolina, Serena

doi:10.1051/0004-6361/202347433

articleAstronomy and AstrophysicsJan 25, 2024DIAMOND OA

The second data release from the European Pulsar Timing Array

JAJohn Antoniadis PAP. Arumugam SAS. Arumugam SBS. Babak MBManjari Bagchi

Université Paris Cité · Laboratoire AstroParticule et Cosmologie · +32 more institutions

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Abstract

The European Pulsar Timing Array (EPTA) and Indian Pulsar Timing Array (InPTA) collaborations have measured a low-frequency common signal in the combination of their second and first data releases, respectively, with the correlation properties of a gravitational wave background (GWB). Such a signal may have its origin in a number of physical processes including a cosmic population of inspiralling supermassive black hole binaries (SMBHBs); inflation, phase transitions, cosmic strings, and tensor mode generation by the non-linear evolution of scalar perturbations in the early Universe; and oscillations of the Galactic potential in the presence of ultra-light dark matter (ULDM). At the current stage of emerging…

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Topics

Keywords

Physics
Gravitational wave
Astrophysics
Pulsar
Cosmic string
Astronomy
Galaxy
Population

UN Sustainable Development Goals

Peace, Justice and strong institutions
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