If, in this case, sigthresh = 1.e-5, there will be approximately 10 strong background fluctuations detected as sources.
Recording a burst of slow maturing proteins means that changes will be minute between frames and probably undistinguishable from spurious background fluctuations.
The use of bounty data could have confounded the results if the number of predators killed was influenced by (i) bounty price/human effort, (ii) background fluctuations in populations or (iii) poor weather for trapping and hunting.
Furthermore, in this case the precise frequency and direction of the gravitational wave source are known, so scientists know exactly where to look, rather than waiting for rare, large-amplitude events or making statistical inferences about background fluctuations.
The Simons Observatory is designed to be a first step toward the fourth-stage project, an ultimate experiment aimed at extracting the full measure of cosmological information in the cosmic microwave background fluctuations accessible from the ground.
In this way, putative sources are eliminated from the data image, along with weak (but otherwise undetectable) sources and background fluctuations, so that a better background estimate can be made.
