The Planck Surveyor mission and gravitational lenses
نویسندگان
چکیده
منابع مشابه
The Planck Surveyor mission and gravitational lenses
An extremely sensitive all-sky survey will be carried out in the millimetre/submillimetre waveband by the forthcoming ESA mission Planck Surveyor. The main scienti c goal of the mission is to make very accurate measurements of the spatial power spectrum of primordial anisotropies in the cosmic microwave background radiation; however, hundreds of thousands of distant dusty galaxies and quasars w...
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We review estimates of small scale fluctuations due to extragalactic point sources in the Planck Surveyor frequency bands. While our undestanding of the spectral and evolutionary properties of these sources is far from complete, conservative estimates allow us to confidently conclude that, in the frequency range 100–200 GHz, their contaminating effect is well below the expected anisotropy level...
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The Planck Surveyor cosmic microwave background (CMB) imaging mission will make very sensitive maps of the whole sky at microwave, millimetre (mm) and sub-mm wavelengths. The steep source counts expected in the highest frequency Planck bands are likely to be associated with a strong magnification bias, and so the fraction of galaxies magnified by a factor of two or more could be greater than 10...
متن کاملConstraining Isocurvature Fluctuations with the Planck Surveyor
A second generation of satellite experiments, MAP [1] and Planck [2], will soon provide highly detailed temperature maps of the cosmic microwave background (CMB). From the measured spectrum of temperature fluctuations one may infer the properties of the cosmic fluid, such as its density or the rate by which it comoves with the expansion of the Universe, and thus determine most cosmological para...
متن کاملThe Planck mission François
These lecture notes discuss some aspects of the Planck1 mission, whose prime objective was a very accurate measurement of the temperature anisotropies of the Cosmic Microwave Background (CMB). We announced our findings a few months ago, on March 21st , 2013. I describe some of the relevant steps we took to obtain these results, sketching the measurement process, how we processed the data to obt...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1998
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.1998.01584.x