Higher Order Contributions to the 21 Cm Power Spectrum

  title={Higher Order Contributions to the 21 Cm Power Spectrum},
  author={Adam Lidz and Oliver Zahn and Matthew McQuinn and Matias Zaldarriaga and Suvendra N. Dutta and Lars Hernquist},
We consider the contribution of 3rd and 4th order terms to the power spectrum of 21 cm brightness temperature fluctuations during the epoch of reionization (EoR), which arise because the 21 cm brightness temperature involves a product of the hydrogenic neutral fraction and the gas density. The 3rd order terms vanish for Gaussian random fields, and have been… CONTINUE READING