During the simulation itself, long range gravitational forces were computed on a 10243 grid yielding a Nyquist critical frequency of kc = 1.07 h Mpc−1 .
Probing Dark Energy with Baryonic Acoustic Oscillations at High Redshifts
We then computed a Discrete Fourier Transform (DFT) for all the light curves up to the Nyquist frequency.
Discovery of two new accreting pulsating white dwarf stars
Then these data are Nyquist sampled and digitized at a rate of 2fN y to avoid aliasing high-frequency noise.
The Cosmic Microwave Background for Pedestrians: A Review for Particle and Nuclear Physicists
Especially for the highest frequencies towards the Nyquist frequencies, noise domination is only a partial explanation for the long correlation length.
Bayesian power-spectrum inference for Large Scale Structure data
The far more important fact is, that the Nyquist frequency can in general not be resolved properly by the data, for example the Nyquist frequency is contained only once in the Fourier box.
Bayesian power-spectrum inference for Large Scale Structure data
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