蟹状星云脉冲星射电剖面分量的形成
Formation of the Radio Profile Components of the Crab Pulsar
摘要：
研究了脉冲星开放场线管中超相对论正负电子等离子体粒子射电辐射的康普顿散射。我们研究了一个明亮的狭窄的无线电波束到背景中的散射在一个宽的立体角，并专门研究了散射的横向制度，这在一个中等强度的磁场。利用散射强度的角分布，并考虑散射区旋转像差的影响，模拟了蟹状星云脉冲星的后向散射分量的分布。认为脉冲间波（IP）、高频脉冲间波（IP '）和高频分量（HFC1和HFC2）分别由主脉冲（MP）、前兆脉冲（PR）和低频分量（LFC）的后向散射产生。首次解释了高频剖面中的IP'和HFCs组分。HFC1和HFC2被认为是由靠近光柱的旋转像差分裂的单个分量。结果表明，观测到的光谱和偏振特性的螃蟹脉冲星的轮廓组件，以及巨脉冲现象的MP之外，可以解释在我们的模型。
英文摘要：
The induced Compton scattering of radio emission off the particles of the ultrarelativistic electron-positron plasma in the open field line tube of a pulsar is considered. We examine the scattering of a bright narrow radio beam into the background over a wide solid angle and specifically study the scattering in the transverse regime, which holds in a moderately strong magnetic field. Making use of the angular distribution of the scattered intensity and taking into account the effect of rotational aberration in the scattering region, we simulate the profiles of the backscattered components as applied to the Crab pulsar. It is suggested that the interpulse (IP), the high-frequency interpulse (IP') and the pair of the so-called high-frequency components (HFC1 and HFC2) result from the backward scattering of the main pulse (MP), precursor (PR) and the low-frequency component (LFC), respectively. The components of the high-frequency profiles, the IP' and HFCs, are interpreted for the first time. The HFC1 and HFC2 are argued to be a single component split by the rotational aberration close to the light cylinder. It is demonstrated that the observed spectral and polarization properties of the profile components of the Crab pulsar as well as the giant pulse phenomenon outside of the MP can be explained in terms of our model.
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