Improved method for detecting local discontinuities in CMB data by finite differencing
File(s)
Published version
Author(s)
Bowyer, Jude
Jaffe, Andrew H
Type
Journal Article
Abstract
An unexpected distribution of temperatures in the CMB could be a sign of new physics. In particular, the existence of cosmic defects could be indicated by temperature discontinuities via the Kaiser-Stebbins effect. In this paper, we show how performing finite differences on a CMB map, with the noise regularized in harmonic space, may expose such discontinuities, and we report the results of this process on the 7-year Wilkinson Microwave Anisotropy Probe data.
Date Issued
2011-01-15
Date Acceptance
2011-01-01
Citation
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2011, 83 (2)
ISSN
1550-2368
Publisher
American Physical Society
Journal / Book Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume
83
Issue
2
Copyright Statement
© 2011 The American Physical Society.
Sponsor
Science and Technology Facilities Council (STFC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000286771500002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
ST/G001901/1
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
MICROWAVE-ANISOTROPY
COSMIC STRINGS
RESOLUTION
Publication Status
Published
Article Number
023503
Date Publish Online
2011-01-06