Fronefield Crawford and Chelsea L. Tiffany 2007 The Astronomical Journal 134 1231 doi:10.1086/521020
Fronefield Crawford1,2 and Chelsea L. Tiffany3
Show affiliationsWe report on dual-frequency radio polarimetry observations of two young, energetic pulsars, PSRs J0940-5428 and J1301-6305. These were among the first Vela-like pulsars discovered in the Parkes multibeam survey. We conducted observations of these pulsars with the Australia Telescope Compact Array (ATCA) at center frequencies of 1384 and 2496 MHz using pulsar gating while preserving full Stokes parameters. After correcting for bandwidth depolarization, we measured polarization characteristics, flux densities, and rotation measures for these pulsars. The spectral indices derived from the ATCA data are shallow but still consistent with values seen for pulsars of this type. The rotation measures for both pulsars are consistent with those reported recently using data from the Parkes telescope, and both pulsars have highly linearly polarized pulse profiles at both 1384 and 2496 MHz. Our results support a previously noted correlation between a high degree of linear polarization, shallow spectral index, and large spin-down luminosity.
polarization; pulsars: individual (PSR J0940-5428, PSR J1301-6305)
Issue 3 (2007 September)
Received 2006 July 26, accepted for publication 2007 June 19
Published 2007 July 27
Fronefield Crawford and Chelsea L. Tiffany 2007 The Astronomical Journal 134 1231
S Hofmann et al 2002 J. Phys. G: Nucl. Part. Phys. 28 1657
G V Kraniotis and S B Whitehouse 2003 Class. Quantum Grav. 20 4817
Cosimo D'Andrea et al 2003 J. Phys. D: Appl. Phys. 36 1675
F. Camilo et al. 2009 ApJ 705 1
Xueyan Song et al 2002 Supercond. Sci. Technol. 15 511
J L McChesney et al 2002 Nanotechnology 13 545
Magnus T L Hsu et al 2004 J. Opt. B: Quantum Semiclass. Opt. 6 495
Chen Zhi-Zhong et al 2002 Chinese Phys. Lett. 19 375
R Cubeddu et al 2002 J. Phys. D: Appl. Phys. 35 R61