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Optical Pulse-Phased Photopolarimetry of PSR B0656+14

机译:PSR B0656 + 14的光脉冲相位光偏振法

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We have observed the optical pulse profile of PSR B0656+14 in 10 phase bins at a high signal-to-noise ratio, and have measured the linear polarization profile over 30% of the pulsar period with some significance. The pulse profile is double-peaked, with a bridge of emission between the two peaks, similar to gamma-ray profiles observed in other pulsars. There is no detectable unpulsed flux, to a 1 σ limit of 16% of the pulse-averaged flux. The emission in the bridge is highly (~100%) polarized, with a position angle sweep in excellent agreement with the prediction of the rotating vector model (RVM) as determined from radio polarization observations. We are able to account for the gross features of the optical light curve (i.e., the phase separation of the peaks) using both polar cap and outer gap models. Using the polar cap model, we are also able to estimate the height of the optical emission regions.
机译:我们已经在高信噪比的10个相位仓中观察了PSR B0656 + 14的光脉冲分布,并在脉冲星周期的30%范围内测量了线性偏振分布,这具有重要意义。脉冲轮廓是双峰的,在两个峰之间具有发射桥,类似于在其他脉冲星中观察到的伽马射线轮廓。没有可检测到的无脉冲通量,其1σ极限为脉冲平均通量的16%。电桥中的发射是高度极化的(〜100%),位置角扫描与从无线电极化观测确定的旋转矢量模型(RVM)的预测非常吻合。我们可以使用极性帽和外部间隙模型来说明光学曲线的总体特征(即峰的相分离)。使用极地帽模型,我们还能够估计光发射区域的高度。

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