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| == Polarimetry at the 30m telescope == | = Polarimetry at the 30m telescope (under construction) = This site collects information relevant to polarimetric observations at the IRAM 30m telescope. == Observing == == Beam maps == == Technical documents == 1. Versatile IF polarimeter at the IRAM 30m telescope [[http://adsabs.harvard.edu/abs/2003SPIE.4843..272T|Thum et al. 2003]] including the first mm observation of the polarization of the moon's limb * XPOL—the Correlation Polarimeter at the IRAM 30-m Telescope [[attachment:thum_2008_xpol.pdf|Thum et al. 2008]], PASP, 120, 777 * Polarimetry with EMIR/XPOL - commisioning report (August 2010) [[attachment:wiesemeyer-2010-polarimetry-v3.pdf|Wiesemeyer & Thum 2010, IRAM Report]] == Scientific Publications == 1. Measurement of the Crab nebula polarization at 90 GHz as a calibrator for CMB experiments [[http://adsabs.harvard.edu/abs/2010A%26A...514A..70A|Aumont et al. 2010]] * A sensitive upper limit to the circular polarization of the Crab nebula at λ3 mm [[http://adsabs.harvard.edu/abs/2011A&A...528A..11W|Wiesemeyer et al. 2011]] * Observations of the Goldreich-Kylafis effect in star-forming regions with XPOL at the IRAM 30 m telescope [[http://adsabs.harvard.edu/abs/2008A&A...492..757F|Forbrich et al. 2008]] This publication includes examples for assessing the magnitude of instrumental polarization due to sidelobes * A 3.5 mm Polarimetric Survey of Radio-loud Active Galactic Nuclei [[http://adsabs.harvard.edu/abs/2010ApJS..189....1A|Agudo et al. 2010]] * 3C 286: a bright, compact, stable, and highly polarized calibrator for millimeter-wavelength observations [[http://adsabs.harvard.edu/abs/2012A&A...541A.111A|Agudo et al.]] == Background material == 1.IAU convention concerning Stokes Parameters Radioastronomy, including the 30m telescope, uses [[attachment:IAUdefs.pdf|these IAU conventions]]. Note however that according to this convention the sign of Stokes V is opposite to the usage in classical optics as described by [[attachment:bornWolf.pdf|Born & Wolf in "Classical Optics"]] * The sign of Stokes V in 30m observations with XPOL has been determined through several methods. They are described in [[attachment:stokesVweb.ps| a short note.]] It was verified that Stokes V spectra generated by the 30m data acquisition program have the correct sign according to the IAU convention. |
Contents
Polarimetry at the 30m telescope (under construction)
This site collects information relevant to polarimetric observations at the IRAM 30m telescope.
Observing
Beam maps
Technical documents
- Versatile IF polarimeter at the IRAM 30m telescope
Thum et al. 2003 including the first mm observation of the polarization of the moon's limb
- XPOL—the Correlation Polarimeter at the IRAM 30-m Telescope
Thum et al. 2008, PASP, 120, 777
- Polarimetry with EMIR/XPOL - commisioning report (August 2010)
== Scientific Publications ==
- Measurement of the Crab nebula polarization at 90 GHz as a calibrator for CMB experiments
- A sensitive upper limit to the circular polarization of the Crab nebula at λ3 mm
- Observations of the Goldreich-Kylafis effect in star-forming regions with XPOL at the IRAM 30 m telescope
Forbrich et al. 2008 This publication includes examples for assessing the magnitude of instrumental polarization due to sidelobes
- A 3.5 mm Polarimetric Survey of Radio-loud Active Galactic Nuclei
- 3C 286: a bright, compact, stable, and highly polarized calibrator for millimeter-wavelength observations
Background material
- 1.IAU convention concerning Stokes Parameters
Radioastronomy, including the 30m telescope, uses these IAU conventions. Note however that according to this convention the sign of Stokes V is opposite to the usage in classical optics as described by Born & Wolf in "Classical Optics"
- The sign of Stokes V
in 30m observations with XPOL has been determined through several methods. They are described in a short note. It was verified that Stokes V spectra generated by the 30m data acquisition program have the correct sign according to the IAU convention.