Is lensing of point sources a problem for future CMB experiments?
نویسندگان
چکیده
منابع مشابه
Lensing of Point Sources a Problem for Future Cmb Experiments ?
Weak gravitational lensing from large-scale structure enhances and reduces the fluxes from extragalactic point sources with an r.m.s. amplitude of order 15%. In cosmic microwave background (CMB) experiments, sources exceeding some flux threshold φc are removed, which means that lensing will modulate the brightness map of the remaining unresolved sources. Since this mean brightness is of order 1...
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No. Weak gravitational lensing from large-scale structure enhances and reduces the fluxes from extragalactic point sources with an r.m.s. amplitude of order 15%. In cosmic microwave background (CMB) experiments, all sources exceeding some flux threshold φc are removed, which means that lensing will modulate the brightness map of the remaining unresolved sources. Since this mean brightness is of...
متن کاملar X iv : a st ro - p h / 96 08 17 3 v 2 2 6 M ar 1 99 7 March 4 , 1997 IS LENSING OF POINT SOURCES A PROBLEM FOR FUTURE CMB EXPERIMENTS
Weak gravitational lensing from large-scale structure enhances and reduces the fluxes from extragalactic point sources with an r.m.s. amplitude of order 15%. In cosmic microwave background (CMB) experiments, sources exceeding some flux threshold φc are removed, which means that lensing will modulate the brightness map of the remaining unresolved sources. Since this mean brightness is of order 1...
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Aims. We prepare real-life Cosmic Microwave Background (CMB) lensing extraction with the forthcoming Planck satellite data, by studying two systematic effects related to the foregrounds contamination: the impact of foreground residuals after a component separation on the lensed CMB map, and of removing a large contaminated region of the sky. Methods. We first use the Generalized Morphological C...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1997
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/289.1.169