People

Membership

The IPTA is a consortium of consortia, currently comprised of APT, NANOGrav, the EPTA, InPTA, and the PPTA. There are also affiliated observers from other timing arrays that plan eventually to join. The Steering Committee is composed of two members from each constituent PTA collaboration, plus affiliated observers.

Currently (2026) the Steering Committee consists of:

• Paul Baker - NANOGrav
• Valentina Di Marco - PPTA
• Marisa Geyer - APT
• Achamveedu Gopakumar (Chair) - InPTA
• Nihan Pol - NANOGrav
• Aditya Parthasarathy - EPTA
• Nataliya Porayko - EPTA
• Daniel Reardon (Outgoing Chair) - PPTA
• Mayuresh Surnis - InPTA
• KJ Lee - Observer representing Chinese Pulsar Timing Array - CPTA
• Ryan Shannon - Observer representing MeerKAT Pulsar Timing Array - MPTA
• Joris Verbiest - Project Manager
• Andrew Zic - PPTA