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首页> 外文期刊>The Astrophysical journal >Flux Densities and Radio Polarization Characteristics of Two Vela-like Pulsars
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Flux Densities and Radio Polarization Characteristics of Two Vela-like Pulsars

机译:两个类Vela脉冲星的通量密度和无线电极化特性

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摘要

We 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.
机译:我们报告了两个年轻的高能脉冲星,PSR J0940-5428和J1301-6305的双频无线电极化观测。这些是在Parkes多光束调查中发现的首批类似Vela的脉冲星。我们使用脉冲星门控,利用澳大利亚望远镜紧凑阵列(ATCA)在1384和2496 MHz的中心频率对这些脉冲星进行了观测,同时保留了完整的斯托克斯参数。校正带宽去极化后,我们测量了这些脉冲星的极化特性,通量密度和旋转量度。从ATCA数据得出的光谱指数很浅,但仍与此类脉冲星的值一致。两个脉冲星的旋转测量与最近使用Parkes望远镜的数据报道的一致,并且两个脉冲星在1384和2496 MHz处都具有高度线性极化的脉冲轮廓。我们的结果支持了先前指出的高度线性偏振,较浅的光谱指数和较大的向下旋光度之间的相关性。

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