Observing cosmic microwave background polarization through ice
Ice crystal clouds in the upper troposphere can generate polarization signals at the mu K level. This signal can seriously affect very sensitive ground-based searches for E and B modes of cosmic microwave background polarization. In this paper, we estimate this effect within the ClOVER experiment ob...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:20711 2023-05-15T13:58:19+02:00 Observing cosmic microwave background polarization through ice Pietranera, L Buehler, SA Calisse, PG Emde, C Hayton, D John, VO Maffei, B Piccirillo, L Pisano, G Savini, G Sreerekha, TR 2007-04-01 http://discovery.ucl.ac.uk/20711/ unknown BLACKWELL PUBLISHING MON NOT R ASTRON SOC , 376 (2) 645 - 650. (2007) atmospheric effects techniques : polarimetric cosmic microwave background cosmology : observations CIRRUS CLOUDS LIMB PARAMETERIZATION ATMOSPHERE RADIANCES PROFILES LIDAR Article 2007 ftucl 2017-04-06T22:15:29Z Ice crystal clouds in the upper troposphere can generate polarization signals at the mu K level. This signal can seriously affect very sensitive ground-based searches for E and B modes of cosmic microwave background polarization. In this paper, we estimate this effect within the ClOVER experiment observing bands (97, 150 and 220 GHz) for the selected observing site (Llano de Chajnantor, Atacama desert, Chile). The results show that the polarization signal from the clouds can be of the order of or even bigger than the cosmic microwave background expected polarization. Climatological data suggest that this signal is fairly constant over the whole year in Antarctica. On the other hand, the stronger seasonal variability in Atacama allows for a 50 per cent of clean observations during the dry season. Article in Journal/Newspaper Antarc* Antarctica University College London: UCL Discovery |
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Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
unknown |
topic |
atmospheric effects techniques : polarimetric cosmic microwave background cosmology : observations CIRRUS CLOUDS LIMB PARAMETERIZATION ATMOSPHERE RADIANCES PROFILES LIDAR |
spellingShingle |
atmospheric effects techniques : polarimetric cosmic microwave background cosmology : observations CIRRUS CLOUDS LIMB PARAMETERIZATION ATMOSPHERE RADIANCES PROFILES LIDAR Pietranera, L Buehler, SA Calisse, PG Emde, C Hayton, D John, VO Maffei, B Piccirillo, L Pisano, G Savini, G Sreerekha, TR Observing cosmic microwave background polarization through ice |
topic_facet |
atmospheric effects techniques : polarimetric cosmic microwave background cosmology : observations CIRRUS CLOUDS LIMB PARAMETERIZATION ATMOSPHERE RADIANCES PROFILES LIDAR |
description |
Ice crystal clouds in the upper troposphere can generate polarization signals at the mu K level. This signal can seriously affect very sensitive ground-based searches for E and B modes of cosmic microwave background polarization. In this paper, we estimate this effect within the ClOVER experiment observing bands (97, 150 and 220 GHz) for the selected observing site (Llano de Chajnantor, Atacama desert, Chile). The results show that the polarization signal from the clouds can be of the order of or even bigger than the cosmic microwave background expected polarization. Climatological data suggest that this signal is fairly constant over the whole year in Antarctica. On the other hand, the stronger seasonal variability in Atacama allows for a 50 per cent of clean observations during the dry season. |
format |
Article in Journal/Newspaper |
author |
Pietranera, L Buehler, SA Calisse, PG Emde, C Hayton, D John, VO Maffei, B Piccirillo, L Pisano, G Savini, G Sreerekha, TR |
author_facet |
Pietranera, L Buehler, SA Calisse, PG Emde, C Hayton, D John, VO Maffei, B Piccirillo, L Pisano, G Savini, G Sreerekha, TR |
author_sort |
Pietranera, L |
title |
Observing cosmic microwave background polarization through ice |
title_short |
Observing cosmic microwave background polarization through ice |
title_full |
Observing cosmic microwave background polarization through ice |
title_fullStr |
Observing cosmic microwave background polarization through ice |
title_full_unstemmed |
Observing cosmic microwave background polarization through ice |
title_sort |
observing cosmic microwave background polarization through ice |
publisher |
BLACKWELL PUBLISHING |
publishDate |
2007 |
url |
http://discovery.ucl.ac.uk/20711/ |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
MON NOT R ASTRON SOC , 376 (2) 645 - 650. (2007) |
_version_ |
1766266545603870720 |