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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
Using 3-Dimensional Ffts To Simulate Cmb Maps On A Spherical Cap, Eric Goetz
Using 3-Dimensional Ffts To Simulate Cmb Maps On A Spherical Cap, Eric Goetz
Honors Theses
The current methods of simulating the Cosmic Microwave Background (CMB) involve either simulating the entire sky using spherical transforms or simulating a at patch with fast Fourier transforms (FFTs). For patches that are too large to be considered at but much less than the full sky, the former method is inecient and the latter is inaccurate. One alternative method of CMB simulation is to simulate the random processes behind the CMB in a 3-dimensional box that contains the part of the sphere that we want to measure. Then, we can select the points we want from the box. This method …
An Examination Of The Cmb Large-Angle Suppression, Ellis Herman
An Examination Of The Cmb Large-Angle Suppression, Ellis Herman
Honors Theses
As shown by COBEDMR and then by the Wilkinson Anisotropy Probe (WMAP), there exists an anomaly in the correlation function of the cosmic microwave background (CMB) radiation, namely that said correlation function is suppressed to zero on large angular scales. This observation conflicts with the prediction made by LambdaCDM, the standard model of cosmology, indicating either necessary changes to the standard model or that our universe is a rare fluke within LCDM such suppressions are seen in only about 0.3% of universes predicted by LCDM. To differentiate into which of these categories our universe falls, we have attempted to …