The 7.2-year InPTA DR2 data yield no detection of a stochastic gravitational wave background, a prior-dominated common-process posterior, and a 95% upper limit of A_GWB < 3.4e-14 at gamma = 13/3.
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The Indian Pulsar Timing Array Data Release 2: III. Search for a Stochastic Gravitational Wave Background
The 7.2-year InPTA DR2 data yield no detection of a stochastic gravitational wave background, a prior-dominated common-process posterior, and a 95% upper limit of A_GWB < 3.4e-14 at gamma = 13/3.