PSR J1926-0652:在 FAST 发现的具有有趣辐射性质的一颗脉冲星
高能天体物理现象
2019-06-05 v1
摘要
我们描述了 PSR J1926-0652,一颗最近由五百米口径球面射电望远镜(FAST)发现的脉冲星。利用 FAST 的灵敏单脉冲探测与 Parkes 64 米射电望远镜的长期计时观测,我们探测了长、短时间尺度上的现象。FAST 观测覆盖 270 至 800 MHz 的宽频范围,使单脉冲得以详细研究。该脉冲星呈现至少四个轮廓分量、持续 4 至 450 个脉冲的短期熄灭、复杂的子脉冲漂移行为以及数十分钟尺度的间歇。尽管平均带间距 P3 在不同爆发与分量中相对恒定,但相邻带间距的显著变化被观测到,尤其在爆发起止附近。带形状与斜率颇为多变,特别是对于后随分量与较短爆发。我们展示对于每次爆发,辐射停止前最后一个可探测脉冲与其他脉冲具有不同性质。这些复杂性对经典 carousel 型模型提出了挑战。
引用
@article{arxiv.1904.05482,
title = {PSR J1926-0652: A Pulsar with Interesting Emission Properties Discovered at FAST},
author = {Lei Zhang and Di Li and George Hobbs and Crispin H. Agar and Richard N. Manchester and Patrick Weltevrede and William A. Coles and Pei Wang and Weiwei Zhu and Zhigang Wen and Jianping Yuan and Andrew D. Cameron and Shi Dai and Kuo Liu and Qijun Zhi and Chenchen Miao and Mao Yua and Shuyun Cao and Li Feng and Hengqian Gan and Long Gao and Xuedong Gu and Minglei Guo and Qiaoli Hao and Lin Huang and Peng Jiang and Chengjin Jin and Hui Li and Qi Li and Qisheng Li and Hongfei Liu and Gaofeng Pan and Zhichen Pan and Bo Peng and Hui Qian and Lei Qian and Xiangwei Shi and Jinyou Song and Liqiang Song and Caihong Sun and Jinghai Sun and Hong Wang and Qiming Wang and Yi Wang and Xiaoyao Xie and Jun Yan and Li Yang and Shimo Yang and Rui Yao and Dongjun Yu and Jinglong Yu and Youling Yue and Chengmin Zhang and Haiyan Zhang and Shuxin Zhang and Xiaonian Zheng and Aiying Zhou and Boqin Zhu and Lichun Zhu and Ming Zhu and Wenbai Zhu and Yan Zhu},
journal= {arXiv preprint arXiv:1904.05482},
year = {2019}
}
备注
13pages with 12 figures