PSR J1926-0652: A Pulsar with Interesting Emission Properties Discovered at FAST
Abstract
We describe PSR J1926-0652, a pulsar recently discovered with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Using sensitive single-pulse detections from FAST and long-term timing observations from the Parkes 64-m radio telescope, we probed phenomena on both long and short time scales. The FAST observations covered a wide frequency range from 270 to 800 MHz, enabling individual pulses to be studied in detail. The pulsar exhibits at least four profile components, short-term nulling lasting from 4 to 450 pulses, complex subpulse drifting behaviours and intermittency on scales of tens of minutes. While the average band spacing P3 is relatively constant across different bursts and components, significant variations in the separation of adjacent bands are seen, especially near the beginning and end of a burst. Band shapes and slopes are quite variable, especially for the trailing components and for the shorter bursts. We show that for each burst the last detectable pulse prior to emission ceasing has different properties compared to other pulses. These complexities pose challenges for the classic carousel-type models.
Cite
@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}
}
Comments
13pages with 12 figures