A template of atmospheric O2 circularly polarized emission for CMB experiments
We compute the circularly polarized signal from atmospheric molecular oxygen. Polarization of O2 rotational lines is caused by Zeeman effect in the Earth magnetic field. We evaluate the circularly polarized emission for various sites suitable for CMB measurements: South Pole and Dome C (Antarctica),...
Main Authors: | , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
arXiv
2011
|
Subjects: | |
Online Access: | https://dx.doi.org/10.48550/arxiv.1103.0160 https://arxiv.org/abs/1103.0160 |
id |
ftdatacite:10.48550/arxiv.1103.0160 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.48550/arxiv.1103.0160 2023-05-15T13:34:17+02:00 A template of atmospheric O2 circularly polarized emission for CMB experiments Spinelli, Sebastiano Fabbian, Giulio Tartari, Andrea Zannoni, Mario Gervasi, Massimo 2011 https://dx.doi.org/10.48550/arxiv.1103.0160 https://arxiv.org/abs/1103.0160 unknown arXiv https://dx.doi.org/10.1111/j.1365-2966.2011.18625.x arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Instrumentation and Methods for Astrophysics astro-ph.IM Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences article-journal Article ScholarlyArticle Text 2011 ftdatacite https://doi.org/10.48550/arxiv.1103.0160 https://doi.org/10.1111/j.1365-2966.2011.18625.x 2022-04-01T14:14:51Z We compute the circularly polarized signal from atmospheric molecular oxygen. Polarization of O2 rotational lines is caused by Zeeman effect in the Earth magnetic field. We evaluate the circularly polarized emission for various sites suitable for CMB measurements: South Pole and Dome C (Antarctica), Atacama (Chile) and Testa Grigia (Italy). An analysis of the polarized signal is presented and discussed in the framework of future CMB polarization experiments. We find a typical circularly polarized signal (V Stokes parameter) of ~ 50 - 300 μK at 90 GHz looking at the zenith. Among the other sites Atacama shows the lower polarized signal at the zenith. We present maps of this signal for the various sites and show typical elevation and azimuth scans. We find that Dome C presents the lowest gradient in polarized temperature: ~ 0.3 μK/\circ at 90 GHz. We also study the frequency bands of observation: around ν \simeq 100 GHz and ν \simeq 160 GHz we find the best conditions because the polarized signal vanishes. Finally we evaluate the accuracy of the templates and the signal variability in relation with the knowledge and the variability of the Earth magnetic field and the atmospheric parameters. : 10 pages, 12 figures, accepted for publication on Mon. Not. R. Astron. Soc Text Antarc* Antarctica South pole South pole DataCite Metadata Store (German National Library of Science and Technology) South Pole |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Instrumentation and Methods for Astrophysics astro-ph.IM Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences |
spellingShingle |
Instrumentation and Methods for Astrophysics astro-ph.IM Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences Spinelli, Sebastiano Fabbian, Giulio Tartari, Andrea Zannoni, Mario Gervasi, Massimo A template of atmospheric O2 circularly polarized emission for CMB experiments |
topic_facet |
Instrumentation and Methods for Astrophysics astro-ph.IM Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences |
description |
We compute the circularly polarized signal from atmospheric molecular oxygen. Polarization of O2 rotational lines is caused by Zeeman effect in the Earth magnetic field. We evaluate the circularly polarized emission for various sites suitable for CMB measurements: South Pole and Dome C (Antarctica), Atacama (Chile) and Testa Grigia (Italy). An analysis of the polarized signal is presented and discussed in the framework of future CMB polarization experiments. We find a typical circularly polarized signal (V Stokes parameter) of ~ 50 - 300 μK at 90 GHz looking at the zenith. Among the other sites Atacama shows the lower polarized signal at the zenith. We present maps of this signal for the various sites and show typical elevation and azimuth scans. We find that Dome C presents the lowest gradient in polarized temperature: ~ 0.3 μK/\circ at 90 GHz. We also study the frequency bands of observation: around ν \simeq 100 GHz and ν \simeq 160 GHz we find the best conditions because the polarized signal vanishes. Finally we evaluate the accuracy of the templates and the signal variability in relation with the knowledge and the variability of the Earth magnetic field and the atmospheric parameters. : 10 pages, 12 figures, accepted for publication on Mon. Not. R. Astron. Soc |
format |
Text |
author |
Spinelli, Sebastiano Fabbian, Giulio Tartari, Andrea Zannoni, Mario Gervasi, Massimo |
author_facet |
Spinelli, Sebastiano Fabbian, Giulio Tartari, Andrea Zannoni, Mario Gervasi, Massimo |
author_sort |
Spinelli, Sebastiano |
title |
A template of atmospheric O2 circularly polarized emission for CMB experiments |
title_short |
A template of atmospheric O2 circularly polarized emission for CMB experiments |
title_full |
A template of atmospheric O2 circularly polarized emission for CMB experiments |
title_fullStr |
A template of atmospheric O2 circularly polarized emission for CMB experiments |
title_full_unstemmed |
A template of atmospheric O2 circularly polarized emission for CMB experiments |
title_sort |
template of atmospheric o2 circularly polarized emission for cmb experiments |
publisher |
arXiv |
publishDate |
2011 |
url |
https://dx.doi.org/10.48550/arxiv.1103.0160 https://arxiv.org/abs/1103.0160 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
Antarc* Antarctica South pole South pole |
genre_facet |
Antarc* Antarctica South pole South pole |
op_relation |
https://dx.doi.org/10.1111/j.1365-2966.2011.18625.x |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1103.0160 https://doi.org/10.1111/j.1365-2966.2011.18625.x |
_version_ |
1766051384706203648 |