Abstract

The characteristics of anomalously intense pulses of the pulsar J0242+6256 in the decameter wavelength range are studied in the paper. Observations were made using the Ukrainian T-shaped Radio telescope, second modification (UTR-2) in October 2014. The dispersion measure for the pulsar was refined. For the first time, such characteristics as the scattering time constant, scattering measure, and rotation measure towards the pulsar were determined. Also, the rapid changes in the rotation measure along the profiles of individual anomalously intense pulses were considered. The obtained characteristics show that, despite the small dispersion measure and the close arrangement to the Earth, the scattering measure towards the pulsar is large. Rapid changes in the rotation measure along the pulse profile of this pulsar are possibly due to the presence of a plasma with rapidly changing parameters near the pulsar.

中文翻译：

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PSR J0242 + 6256在分米波长范围内的时间和偏振辐射特性

摘要

研究了在十米波长范围内脉冲星J0242 + 6256异常强脉冲的特性。2014年10月使用乌克兰T形射电望远镜第二次修改版（UTR-2）进行了观测。对脉冲星的色散测量进行了改进。首次确定了诸如散射时间常数，散射量度和朝向脉冲星的旋转量度等特性。此外，考虑了沿各个异常强烈脉冲的轮廓的旋转量度的快速变化。所获得的特性表明，尽管色散量较小且与地球的排列紧密，但对脉冲星的散射量较大。