Kesden, Michael and Kamionkowski, Marc and Cooray, Asantha (2003) Can Cosmic Shear Shed Light on Low Cosmic Microwave Background Multipoles? Physical Review Letters, 91 (22). Art. No. 221302. ISSN 0031-9007. doi:10.1103/PhysRevLett.91.221302. https://resolver.caltech.edu/CaltechAUTHORS:KESprl03
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Abstract
The lowest multipole moments of the cosmic microwave background (CMB) are smaller than expected for a scale-invariant power spectrum. One possible explanation is a cutoff in the primordial power spectrum below a comoving scale of kc~=5.0×10^–4 Mpc^–1. Such a cutoff would increase significantly the cross correlation between the large-angle CMB and cosmic-shear patterns. The cross correlation may be detectable at >2sigma which, combined with the low CMB moments, may tilt the balance between a 2sigma result and a firm detection of a large-scale power-spectrum cutoff. The cutoff also increases the large-angle cross correlation between the CMB and the low-redshift tracers of the mass distribution.
Item Type: | Article | ||||||||
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Additional Information: | © 2003 The American Physical Society (Received 27 June 2003; revised 27 August 2003; published 26 November 2003) This work was supported in part by NASA NAG5-11985 and DoE DE-FG03-92-ER40701. M.K. acknowledges the support of the NSF. | ||||||||
Group: | TAPIR | ||||||||
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Subject Keywords: | cosmic background radiation; gravitational lenses; spectral analysis | ||||||||
Issue or Number: | 22 | ||||||||
DOI: | 10.1103/PhysRevLett.91.221302 | ||||||||
Record Number: | CaltechAUTHORS:KESprl03 | ||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:KESprl03 | ||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||
ID Code: | 5504 | ||||||||
Collection: | CaltechAUTHORS | ||||||||
Deposited By: | Archive Administrator | ||||||||
Deposited On: | 20 Oct 2006 | ||||||||
Last Modified: | 08 Nov 2021 20:26 |
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