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Astrid Rekker
Researcher at Tallinn University
Publications - 20
Citations - 128
Astrid Rekker is an academic researcher from Tallinn University. The author has contributed to research in topics: Noise (electronics) & White noise. The author has an hindex of 5, co-authored 19 publications receiving 117 citations. Previous affiliations of Astrid Rekker include Pedagogical University & University of Tartu.
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Constructive influence of noise flatness and friction on the resonant behavior of a harmonic oscillator with fluctuating frequency.
TL;DR: A nonmonotonic dependence of several stochastic resonance characteristics such as spectral amplification, variance of the output signal, and signal-to-noise ratio on the friction coefficient and on the noise flatness is found.
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Memory-enhanced energetic stability for a fractional oscillator with fluctuating frequency.
Romi Mankin,Astrid Rekker +1 more
TL;DR: It is shown that at intermediate values of the memory exponent the energetic stability of the oscillator is significantly enhanced in comparison with the cases of strong and low memory.
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Cage effect for the velocity correlation functions of a Brownian particle in viscoelastic shear flows.
TL;DR: In this paper, the long-time limit behavior of velocity correlation functions (VCFs) for an underdamped Brownian particle in an oscillatory viscoelastic shear flow is investigated using the generalized Langevin equation with a power-law memory kernel.
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Response to a periodic stimulus in a perfect integrate-and-fire neuron model driven by colored noise.
Romi Mankin,Astrid Rekker +1 more
TL;DR: It is shown that an interplay of a periodic forcing and colored noise can cause a variety of nonequilibrium cooperation effects, such as sign reversals of the interspike interval correlations versus noise-switching rate as well as versus the frequency of periodic forcing.
Journal Article
Energetic instability of a fractional oscillator
Astrid Rekker,Romi Mankin +1 more
TL;DR: In this paper, the problem of memory-enhanced stability occurring in a fractional oscillator with fluctuating eigenfrequency when the oscillator is driven by external sinusoidal forcing and by an additive internal fractional noise with a power-law type memory was explored.