|
Size: 1292
Comment:
|
Size: 2088
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 6: | Line 6: |
| This site collects information relevant to polarimetric observations at the IRAM 30m telescope. | This site collects information relevant to polarimetric observations at the IRAM 30m telescope. == Observing == |
| Line 9: | Line 15: |
== Observing macro == |
|
| Line 14: | Line 18: |
| * Versatile IF polarimeter at the IRAM 30m telescope [[http://adsabs.harvard.edu/abs/spie.ps|Thum et al. 2003]] including the first mjm observation of the polarization of the moon's limb |
|
| Line 16: | Line 23: |
* Polarimetry with EMIR/XPOL - commisioning report (August 2010) [[attachment:wiesemeyer-2010-polarimetry-v3.pdf|Wiesemeyer & Thum 2010, IRAM Report]] |
|
| Line 18: | Line 28: |
| * Polarimetry with EMIR/XPOL - commisioning report (August 2010) [[attachment:wiesemeyer-2010-polarimetry-v3.pdf|Wiesemeyer & Thum 2010, IRAM Report]] |
* 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 |
| Line 30: | Line 43: |
| Stokes V spectra generated by the 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
Documents
- Versatile IF polarimeter at the IRAM 30m telescope
Thum et al. 2003 including the first mjm 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)
- 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
Background material
- IAU definition of Stokes Parameters
They are found here. Radioastronomy, including the 30m telescope, uses these definitions. Note however that according to this definition the sign of Stokes V is opposite to the convention 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 this short note. Stokes V spectra generated by the data acquisition program have the correct sign according to the IAU convention.