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Thursday, 02 September 2010, 19:21:24
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Planck unveils the Universe – now and then
Monday, 05 July 2010
[source: esa - italian press release on www.media.inaf.it]

ESA’s Planck mission has delivered its first all-sky image. It not only provides new insight into the way stars and galaxies form but also tells us how the Universe itself came to life after the Big Bang.
 
"This is the moment that Planck was conceived for," says ESA Director of Science and Robotic Exploration, David Southwood. "We’re not giving the answer. We are opening the door to an Eldorado where scientists can seek the nuggets that will lead to deeper understanding of how our Universe came to be and how it works now. The image itself and its remarkable quality is a tribute to the engineers who built and have operated Planck. Now the scientific harvest must begin."

 
The Sieve of Sara
Wednesday, 09 June 2010
Image
Sara Ricciardi

A full press release (in Italian) related to this news is available on Media Inaf.

How to distil a dozen or so of cosmological parameters out of Planck maps? Extracting clean power spectra from tenth of terabytes of data — a jungle of signals and noise where contributions from background and foregrounds are deeply intertwined — is a real challenge. It requires a complex pipeline: a sequence of algorithms able to carry out component separation both on temperature and on polarization maps. Moreover, during the whole process, error propagation has to be carefully taken into account. The good news is that such a pipeline now exists: it has been designed and thoroughly tested by a team of scientists led by Sara Ricciardi (IASF-BO) and Anna Bonaldi (OA Padova). Their work has just been published on Monthly Notices.