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R. H. Becker, X. Fan, R. L. White, M. A. Strauss, V. K. Narayanan, R. H. Lupton, J. E. Gunn, J. Annis, N. A. Bahcall, J. Brinkmann, A. J. Connolly, I. Csabai, P. C. Czarapata, M. Doi, T. M. Heckman, G. S. Hennessy, Ž. Ivezić, G. R. Knapp, D. Q. Lamb, T. A. McKay, J. A. Munn, T. Nash, R. Nichol, J. R. Pier, G. T. Richards, D. P. Schneider, C. Stoughton, A. S. Szalay, A. R. Thakar, and D. G. York, AJ, 122
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S. R. Furlanetto, S. P. Oh, and F. H. Briggs, Physics Reports, 433
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H. J. A. Rottgering, R. Braun, P. D. Barthel, M. P. van Haarlem, G. K. Miley, R. Morganti, I. Snellen, H. Falcke, A. G. de Bruyn, R. B. Stappers, W. H. W. M. Boland, H. R. Butcher, E. J. de Geus, L. Koopmans, R. Fender, J. Kuijpers, R. T. Schilizzi, C. Vogt, R. A. M. J. Wijers, M. Wise, W. N. Brouw, J. P. Hamaker, J. E. Noordam, T. Oosterloo, L. Bahren, M. A. Brentjens, S. J. Wijnholds, J. D. Bregman, W. A. van Cappellen, A. W. Gunst, G. W. Kant, J. Reitsma, K. van der Schaaf, and C. M. de Vos, ArXiv Astrophysics e-prints (2006), arXiv:astro-ph/0610596
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V. Jelić, S. Zaroubi, P. Labropoulos, R. M. Thomas, G. Bernardi, M. A. Brentjens, A. G. de Bruyn, B. Ciardi, G. Harker, L. V. E. Koopmans, V. N. Pandey, J. Schaye, and S. Yatawatta, MNRAS, 389
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2012

Global 21cm signal experiments: A designer's guide

Liu, Adrian, Pritchard, Jonathan R., Tegmark, Max et al.

Understand

[Abridged] The spatially averaged global spectrum of the redshifted 21cm line has generated much experimental interest, for it is potentially a direct probe of the Epoch of Reionization and the Dark Ages.

Since the cosmological signal here has a purely spectral signature, most proposed experiments have little angular sensitivity.
This is worrisome because with only spectra, the global 21cm signal can be difficult to distinguish from foregrounds such as Galactic synchrotron radiation, as both are spectrally smooth and the latter is orders of magnitude brighter.
We establish a mathematical framework for global signal data analysis in a way that removes foregrounds optimally, complementing spectra with angular information.

Built on

C. G. T. Haslam, C. J. Salter, H. Stoffel, and W. E. Wilson, A&AS, 47
1982
Earlier work this paper cites.
L. Knox, PRD, 52
1995
Earlier work this paper cites.
M. Tegmark and G. Efstathiou, MNRAS, 281
1996
Earlier work this paper cites.
P. A. Shaver, R. A. Windhorst, P. Madau, and A. G. de Bruyn, A&A, 345
1999
Earlier work this paper cites.
R. H. Becker, X. Fan, R. L. White, M. A. Strauss, V. K. Narayanan, R. H. Lupton, J. E. Gunn, J. Annis, N. A. Bahcall, J. Brinkmann, A. J. Connolly, I. Csabai, P. C. Czarapata, M. Doi, T. M. Heckman, G. S. Hennessy, Ž. Ivezić, G. R. Knapp, D. Q. Lamb, T. A. McKay, J. A. Munn, T. Nash, R. Nichol, J. R. Pier, G. T. Richards, D. P. Schneider, C. Stoughton, A. S. Szalay, A. R. Thakar, and D. G. York, AJ, 122
2001
Earlier work this paper cites.
R. Barkana and A. Loeb, ApJL, 624
2005
Earlier work this paper cites.
S. R. Furlanetto, S. P. Oh, and F. H. Briggs, Physics Reports, 433
2006
Earlier work this paper cites.
M. McQuinn, O. Zahn, M. Zaldarriaga, L. Hernquist, and S. R. Furlanetto, ApJ, 653
2006
Earlier work this paper cites.
H. J. A. Rottgering, R. Braun, P. D. Barthel, M. P. van Haarlem, G. K. Miley, R. Morganti, I. Snellen, H. Falcke, A. G. de Bruyn, R. B. Stappers, W. H. W. M. Boland, H. R. Butcher, E. J. de Geus, L. Koopmans, R. Fender, J. Kuijpers, R. T. Schilizzi, C. Vogt, R. A. M. J. Wijers, M. Wise, W. N. Brouw, J. P. Hamaker, J. E. Noordam, T. Oosterloo, L. Bahren, M. A. Brentjens, S. J. Wijnholds, J. D. Bregman, W. A. van Cappellen, A. W. Gunst, G. W. Kant, J. Reitsma, K. van der Schaaf, and C. M. de Vos, ArXiv Astrophysics e-prints (2006), arXiv:astro-ph/0610596
2006
Earlier work this paper cites.
S. R. Furlanetto, MNRAS, 371
2006
Earlier work this paper cites.
X. Wang, M. Tegmark, M. G. Santos, and L. Knox, ApJ, 650
2006
Earlier work this paper cites.
J. S. B. Wyithe and M. F. Morales, MNRAS, 379
2007
Earlier work this paper cites.
J. R. Pritchard and S. R. Furlanetto, MNRAS, 376
2007
Earlier work this paper cites.
A. Lewis and A. Challinor, PRD, 76
2007
Earlier work this paper cites.
Y. Mao, M. Tegmark, M. McQuinn, M. Zaldarriaga, and O. Zahn, PRD, 78
Original
2008
Earlier work this paper cites.
R. Barkana and A. Loeb, MNRAS, 384
Original
2008
Earlier work this paper cites.
A. de Oliveira-Costa, M. Tegmark, B. M. Gaensler, J. Jonas, T. L. Landecker, and P. Reich, MNRAS, 388
Original
2008
Earlier work this paper cites.
L. Gleser, A. Nusser, and A. J. Benson, MNRAS, 391
Original
2008
Earlier work this paper cites.
V. Jelić, S. Zaroubi, P. Labropoulos, R. M. Thomas, G. Bernardi, M. A. Brentjens, A. G. de Bruyn, B. Ciardi, G. Harker, L. V. E. Koopmans, V. N. Pandey, J. Schaye, and S. Yatawatta, MNRAS, 389
Original
2008
Earlier work this paper cites.