The effect of peculiar velocities on the epoch of reionization (EoR) 21-cm signal

Understand

We have used semi-numerical simulations of reionization to study the behaviour of the power spectrum of the EoR 21-cm signal in redshift space.

• We have considered two models of reionization, one which has homogeneous recombination (HR) and the other incorporating inhomogeneous recombination (IR).
• We have estimated the observable quantities --- quadrupole and monopole moments of HI power spectrum at redshift space from our simulated data.
• We find that the magnitude and nature of the ratio between the quadrupole and monopole moments of the power spectrum ($P^s_2 /P^s_0$) can be a possible probe for the epoch of reionization.