3C 286: a bright, compact, stable, and highly polarized calibrator for millimeter-wavelength observations
Abstract
Context. Several millimeter and submillimeter facilities with linear polarization observing capabilities have started operating during the last years. These facilities, as well as other previous millimeter telescopes and interferometers, require bright and stable linear polarization calibrators to calibrate new instruments and to monitor their instrumental polarization. The current limited number of adequate calibrators implies difficulties in the acquisition of these calibration observations.
Aims: Looking for additional linear polarization calibrators in the millimeter spectral range, we started monitoring
Methods: Here we present the 3 mm and 1 mm monitoring observations obtained between September 2006 and January 2012 with the XPOL polarimeter on the IRAM 30 m Millimeter Telescope.
Results: Our observations show that
Conclusions: This, together with the previously known compact structure of
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- May 2012
- DOI:
- 10.1051/0004-6361/201218801
- arXiv:
- arXiv:1201.2150
- Bibcode:
- 2012A&A...541A.111A
- Keywords:
-
- polarization;
- instrumentation: polarimeters;
- techniques: polarimetric;
- quasars: individual: 3C 286;
- submillimeter: general;
- radio continuum: general;
- Astrophysics - Instrumentation and Methods for Astrophysics;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- Accepted for publication in A&