# Time-delayed feedback control of coherence resonance chimeras

## TL;DR

This paper explores how time-delayed feedback can control and induce new regimes in coherence resonance chimeras within a FitzHugh-Nagumo network, revealing a novel period-two regime.

## Contribution

It demonstrates that time-delayed feedback can effectively control the parameter range of coherence resonance chimeras and introduces a new period-two regime.

## Key findings

- Time-delayed feedback controls chimera states.
- Identification of a novel period-two coherence resonance chimera.
- Extended parameter range for chimera occurrence.

## Abstract

Using the model of a FitzHugh-Nagumo system in the excitable regime we investigate the influence of time-delayed feedback on noise-induced chimera states in a network with nonlocal coupling, i.e., coherence resonance chimeras. It is shown that time-delayed feedback allows for control of the range of parameter values where these chimera states occur. Moreover, for the feedback delay close to the intrinsic period of the system we find a novel regime which we call period-two coherence resonance chimera.