|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
WMAP polarization observations: seeing through the Galaxy
If you have a question about this talk, please contact Antony Lewis.
Current polarization measurements from WMAP provide information about the reionization epoch. However, WMAP observes significant levels of polarized radiation from our Galaxy. I will present a sampling method for estimating the polarized CMB maps, marginalizing over Galactic contributions. I will show the application of this method to the five year WMAP data, where we find that the large scale polarized CMB signal is consistent with the standard ‘template-cleaned’ result. The synchrotron emission is found to have mean index ~ -3.0 in regions of high signal to noise. The large scale polarized CMB is also used to search for a background of gravitational waves from inflation in the early universe, so I’ll discuss the application to future estimation of this primordial signal.
This talk is part of the Cosmology lunch series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsModern Greek Lecture Series Cancer Research UK Cambridge Institute (CRUK CI) Seminars in Cancer Winifred Nicholson: Thursday Lunchtime Talks
Other talksCambridge Rare Disease Network International Summit The separation of Britain from mainland Europe in the late Quaternary Making your Applications Smarter Through Machine Learning APIs Cryptosporidium, new insights and old challenges The body vibration of bowed string instruments Diffusion processes on branching Brownian motion