Null-stream analysis of Pulsar Timing Array data: localization of resolvable gravitational wave sources

• DOI: 10.1093/mnras/sty892
• Publication Date: 2018-04-09T07:09:43Z
• Authors: Janna M Goldstein; John Veitch; Alberto Sesana; Alberto Vecchio
• Keywords: Null (SQL)

Super-massive black hole binaries are expected to produce a GW signal in the nano-Hertz frequency band which may be detected by PTAs coming years. The is composed of both stochastic and individually resolvable components. Here we develop generic Bayesian method for analysis sources based on construction `null-streams' cancel part held common each pulsar (the Earth-term). For an array $N$ pulsars there $N-2$ independent null-streams that from particular sky location. This applied localisation quasi-circular undergoing adiabatic inspiral. We carry out systematic investigation scaling accuracy with strength number PTA. Additionally, find source International PTA data release one vastly superior than what achieved its constituent regional PTAs.