POLARIZATION OBSERVATIONS OF 100 PULSARS AT 774 MHz BY THE GREEN BANK TELESCOPE
- National Astronomical Observatories, Chinese Academy of Sciences, Jia 20 DaTun Road, Beijing 100012 (China)
- National Radio Astronomy Observatory, Charlottesville, VA 22903 (United States)
- Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218, Hawthorn, VIC 3122 (Australia)
- University of Manchester, Jodrell Bank Observatory, Macclesfield SK11 9DL (United Kingdom)
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.
- OSTI ID:
- 21269208
- Journal Information:
- Astrophysical Journal, Supplement Series, Vol. 181, Issue 2; Other Information: DOI: 10.1088/0067-0049/181/2/557; Country of input: International Atomic Energy Agency (IAEA); ISSN 0067-0049
- Country of Publication:
- United States
- Language:
- English
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