Sunyaev-Zel'dovich distortion from early galactic winds

We consider the distortion in the cosmic microwave background (CMB) resulti ng from galactic winds at high redshift. Winds outflowing from galaxies hav e been hypothesized to be possible sources of metals in the intergalactic m edium, which is known to have been enriched to 10(-2.5)Z(.) at z similar to 3. We model these winds as functions of mass of the parent galaxy and reds hift, assuming that they activate at a common initial redshift, z(in), and calculate the mean y-distortion and the angular power spectrum of the disto rtion in the CMB, We find that the thermal Sunyaev-Zel'dovich (SZ) effect r esulting from the winds is consistent with previous estimates. The distorti on arising from the kinetic SZ (kSZ) effect is, however, found to be more i mportant than the thermal SZ (tSZ) effect. We find that the distortion resu lting from galactic winds is an important contribution to the power spectru m of distortion at very small angular scales (l similar to 10(4)). We also find that the power spectrum resulting from clustering dominates the Poisso n power spectrum for l less than or equal to (4-5) x 10(5). We show explici tly how the combined power spectrum from wind dominates over that of cluste rs at 217 GHz, relevant for PLANCK, We also show how these constraints chan ge when the efficiency of the winds is varied.