This review summarises recent progress in pulsar timing array research and the current status of nanohertz gravitational wave astronomy. I outline the techniques enabling decade-long, sub-microsecond-precision timing, present results from PTA collaborations between 2023-2025, and discuss their implications for supermassive black-hole binaries, cosmological sources, and beyond-Standard-Model physics. I also highlight complimentary efforts probing the nanohertz regime.
Shaifullah, G. (2025). Pulsar Timing Arrays - challenges and current status. CLASSICAL AND QUANTUM GRAVITY, 42(24) [10.1088/1361-6382/ae19c2].
Pulsar Timing Arrays - challenges and current status
Shaifullah, GM
2025
Abstract
This review summarises recent progress in pulsar timing array research and the current status of nanohertz gravitational wave astronomy. I outline the techniques enabling decade-long, sub-microsecond-precision timing, present results from PTA collaborations between 2023-2025, and discuss their implications for supermassive black-hole binaries, cosmological sources, and beyond-Standard-Model physics. I also highlight complimentary efforts probing the nanohertz regime.
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