Detection of the late time integrated Sachs-Wolfe effect (ISW) is an active area of study related to Large Scale Structures (LSS).The ISW effect can be studied by observing the non- zero cross-correlation between cosmic microwave... more
Detection of the late time integrated Sachs-Wolfe effect (ISW) is an active area of study related to Large Scale Structures (LSS).The ISW effect can be studied by observing the non- zero cross-correlation between cosmic microwave background (CMB) anisotropies with tracers of mass field, such as galaxy survey data. We plan to study this effect by cross-correlating the CMB data and related cosmological parameters as delineated by the Wilkinson microwave anisotropy probe(WMAP)with the upcoming evolutionary map of the universe (EMU) survey planned for Australian square kilometer array Pathfinder(ASKAP).EMU-ASKAP is planned to conduct a deep radio continuum survey with rms10µJy/beam. The survey is planned to cover the entire southern sky, extending to North + 30degreedeclination.Toinferthe expected redshift distribution (dN/dz) and differential source count (S) of the survey that can be extracted from the EMU galaxies, we use data from S-cubed simulation of extra galactic radio continuum(S3- SEX) for square kilometer array design studies (SKADS). We also calculate various parameters including galaxy survey shot noise, rms confusion uncertainty, and position uncertainty for the survey which can help in understanding the accuracy and analyzing the results of the data. We also discuss Signal to noise ratios over range of maximum redshifts and maximum multipole values with some discussion on constraints over ΩΛ and Ωb.
