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Future constraints on variations of the fine structure constant from combined CMB and weak lensing measurements
Future constraints variations fine structure constant combined CMB weak lensing measurements
2012/2/21
We forecast the ability of future CMB and galaxy lensing surveys to constrain variations of the fine structure constant. We found that lensing data, as those expected from satellite experiments as Euc...
Local Discontinuity Detection in the 7-Year WMAP CMB by Finite Differencing
Local Discontinuity Detection WMAP CMB
2010/11/12
An unexpected distribution of temperatures in the CosmicMicrowave Background (CMB) could be
a sign of new physics. In particular, the existence of cosmic defects could be indicated by temperature dis...
The CMB Bispectrum, Trispectrum, non-Gaussianity, and the Cramer-Rao Bound
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/23
Minimum-variance estimators for the parameter fnl that quantifies local-model non-Gaussianity can be constructed from the cosmic microwave background (CMB) bispectrum (three-point function) and also f...