http://arxiv.org/abs/1801.05570
We review an improved statistical model of extra-galactic point-source foregrounds first introduced in [Murray 2017], in the context of the Epoch of Reionization. This model extends the instrumentally-convolved foreground covariance used in inverse-covariance foreground mitigation schemes, by considering the cosmological clustering of the sources. In this short work, we show that over scales of $k \sim (0.6, 40.) h {\rm Mpc}^{-1}$, ignoring source clustering is a valid approximation. This is in contrast to [Murray 2017], who found a possibility of false detection if the clustering was ignored. The dominant cause for this change is the introduction of a Galactic synchrotron component which shadows the clustering of sources.
S. Murray, C. Trott and C. Jordan
Thu, 18 Jan 2018
40/58
Comments: 4 pages, 1 figure. Submitted to the Proceedings of the IAU Symposium No. 333 — Peering Towards Cosmic Dawn
You must be logged in to post a comment.