Published September 21, 2011
| Published
Journal Article
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Primordial Non-Gaussianity from the 21 cm Power Spectrum during the Epoch of Reionization
Abstract
Primordial non-Gaussianity is a crucial test of inflationary cosmology. We consider the impact of non-Gaussianity on the ionization power spectrum from 21 cm emission at the epoch of reionization. We focus on the power spectrum on large scales at redshifts of 7 to 8 and explore the expected constraint on the local non-Gaussianity parameter f_(NL) for current and next-generation 21 cm experiments. We show that experiments such as SKA and MWA could measure f_(NL) values of order 10. This can be improved by an order of magnitude with a fast-Fourier transform telescope like Omniscope.
Additional Information
© 2011 American Physical Society. Received 19 May 2011; published 21 September 2011. We thank A. Amblard, Y. Mao, G. Martinez, M. McQuinn, J. Smidt, and E. Tollerud for useful discussions. M. G. S. acknowledges support by FCT under grant PTDC/FIS/100170/2008. M.K. acknowledges support by NSF under grant NSF 0855462 at UCI. Part of the research described in this Letter was carried out at JPL, Caltech, under contract with NASA.Attached Files
Published - Joudaki2011p16020Phys_Rev_Lett.pdf
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Joudaki2011p16020Phys_Rev_Lett.pdf
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Additional details
- Eprint ID
- 27250
- Resolver ID
- CaltechAUTHORS:20111017-110626939
- PTDC/FIS/100170/2008
- Fundação para a Ciência e a Tecnologia (FCT)
- PHY-0855462
- NSF
- NASA/JPL/Caltech
- Created
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2011-10-17Created from EPrint's datestamp field
- Updated
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2023-03-15Created from EPrint's last_modified field