Effelsberg multifrequency pulsar polarimetry
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
2 Cornell University, National Astronomy & Ionospheric Center, Arecibo Observatory, P.O. Box 995, Arecibo, PR 00613, U.S.A.
Accepted: 24 February 1997
A sample of 64 well-calibrated pulsar polarization profiles measured at cm-wavelengths with the Effelsberg radio telescope is presented. All profiles were measured using an adding and a multiplying polarimeter which enables polarimetry over wide-bandwidths. Gain imbalances introduced by the active components in the signal path, as well as system imperfections, alter the polarization state of the incoming radiation. An analysis of the signal path of those devices is presented, together with a dynamic calibration procedure introduced to eliminate the instrumental errors. The results were used to trace the location of the radiating region in pulsar magnetospheres at high frequencies.
Key words: polarization / techniques: polarimetric / pulsars: general / pulsars: individual PSR B0136+57, PSR B0301+19, PSR B0329+54, PSR B0355+54, PSR B0450+55, PSR B0525+21, PSR B0540+23, PSR B0740–28, PSR B0809+74, PSR B0823+26, PSR B0919+06, PSR B0950+08, PSR B1133+16, PSR B1237+35, PSR B1642–03, PSR B1822–09, PSR B1915+13, PSR B1929+10, PSR B1946+35, PSR B2016+28, PSR B2020+28, PSR B2021+51, PSR B2045–16, PSR B2154+40, PSR B2310+42, PSR B2319+60, PSR B2351+61
© European Southern Observatory (ESO), 1997