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A Clustered Extragalactic Foreground Model for the EoR

Published online by Cambridge University Press:  08 May 2018

S. G. Murray Open the ORCID record for S. G. Murray [Opens in a new window] ,
C. M. Trott Open the ORCID record for C. M. Trott [Opens in a new window]  and
C. H. Jordan
S. G. Murray
Affiliation:
ARC Centre of Excellence for All-sky Astrophysics (CAASTRO) International Centre for Radio Astronomy Research (ICRAR), Curtin University, Bentley, WA 6102, Australia
C. M. Trott
Affiliation:
ARC Centre of Excellence for All-sky Astrophysics (CAASTRO) International Centre for Radio Astronomy Research (ICRAR), Curtin University, Bentley, WA 6102, Australia
C. H. Jordan
Affiliation:
ARC Centre of Excellence for All-sky Astrophysics (CAASTRO) International Centre for Radio Astronomy Research (ICRAR), Curtin University, Bentley, WA 6102, Australia
Rights & Permissions [Opens in a new window]

Abstract

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We review an improved statistical model of extra-galactic point-source foregrounds first introduced in Murray et al. (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 ∼ (0.6, 40.)hMpc−1, ignoring source clustering is a valid approximation. This is in contrast to Murray et al. (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.

Keywords

Epoch of ReionisationStatistical Methods
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S333: Peering towards Cosmic Dawn , October 2017 , pp. 199 - 202
Copyright
Copyright © International Astronomical Union 2018 

References

Ali, Z. S., Parsons, A. R., Zheng, H. et al. 2015, ApJ, 809, 61Google Scholar
Beardsley, A. P., Hazelton, B. J., Sullivan, I. S. et al. 2016, ApJ, 833, 102Google Scholar
Mesinger, A., Furlanetto, S., & Cen, R., 2010, MNRAS, 411, 955Google Scholar
Murray, S. G., Trott, C. M., & Jordan, C. H., 2017, ApJ, 845, 7Google Scholar
Patil, A. H., Yatawatta, S., Koopmans, L. V. E. et al. 2017, ApJ, 838, 65CrossRefGoogle Scholar
Trott, C. M, Pindor, B., Procopio, P. et al. 2016, ApJ, 818, 1Google Scholar
Zheng, H., Tegmark, M., Dillon, J. S. et al. 2017, MNRAS, 464, 3486Google Scholar