Polarization observations of 100 pulsars at 774 MHz by the Green Bank Telescope

Details Polarization observations of 100 pulsars at 774 MHz by the Green Bank Telescope Polarization observations of 100 pulsars at 774 MHz by the Green Bank Telescope

2009-01-08

arxiv.org/abs/0901.0962v2

ApJS 181, 557 (2009)

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

16 pages. Figures for profiles for 100 pulsars, including several calibrators. Published by ApJS

Scientific paper

10.1088/0067-0049/181/2/557

We report on polarimetric observations of 100 pulsars centered on 774 MHz, made using the Green Bank Telescope, presenting their polarization profiles and polarized flux densities and comparing them with previous observations when possible. For 67 pulsars, these are the first such measurements made. Polarization profiles of 8 millisecond pulsars in our sample show wide profiles and flat position-angle curves. Strong linear polarization, sometimes approaching 100% of the total intensity, has been detected in all or a part of the average pulse profiles of some pulsars. In general, circular polarization is very weak, although it is observed to be extremely strong in the leading component of PSR J1920+2650. Sense reversal of circular polarization as a function of pulse phase has been detected from both core and other components of more than 20 pulsars. Any relationship between the spin-down luminosity and the percentage of linear polarization is not evident in our data at this frequency.

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