PSR J0826+2637的模式变换特性研究

Mode change characteristics of PSR J0826+2637

    摘要
  • 摘要: 利用FAST在中心频率为1.25 GHz的观测数据，分析了PSR J0826+2637的单脉冲能量分布和调制特性，发现存在新的模式变换，并探讨了不同模式的平均脉冲轮廓和偏振特性．结果显示：在B模式中存在强、弱2种模式，弱模式中存在脉冲消零(PN)现象， 脉冲消零比（NF）为2.7%；在强、弱2种模式中，中间脉冲的偏振结果差异较小，而主脉冲的变化较大．PSR J0826+2637的模式变换特性很难用现有的模型来解释．

     

    Abstract: The FAST observation data at center frequency of 1.25 GHz are used to analyze energy distribution and modulation characteristics of single pulse of PSR J0826+2637．A new mode change is found, average pulse profile and polarization characteristics of different modes are discussed．Strong and weak modes are present in B mode, a PN phenomenon is found in weak mode, with NF of 2.7%．In both strong and weak modes, polarization results of inter-pulse are slightly different, while the main pulse changes greatly．The mode change characteristics of PSR J0826+2637 are difficult to explain with existing models．