Calibration requirements for epoch of reionization 21-cm signal observations – I. Effect of time-correlated gains

  title={Calibration requirements for epoch of reionization 21-cm signal observations – I. Effect of time-correlated gains},
  author={Jais Kumar and Prasun Dutta and Nirupam Roy},
  journal={Monthly Notices of the Royal Astronomical Society},
The residual gain errors add to the systematics of the radio interferometric observations. In case of the high dynamic range observations, these systematic effects dominates over the thermal noise of the observation. In this work, we investigate the effect of time-correlated residual gain errors in the estimation of the power spectrum of the sky brightness distribution in high dynamic range observations. Particularly, we discuss a methodology to estimate the bias in the power spectrum estimator… 

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