A Study of 10 Rotating Radio Transients Using Parkes Radio Telescope

作     者：Xinhui Ren Jingbo Wang Wenming Yan Jintao Xie Shuangqiang Wang Yirong Wen Yong Xia 

作者机构：Xinjiang Astronomical ObservatoryChinese Academy of SciencesUrumqi 830011China University of Chinese Academy of SciencesBeijing 100049China Institute of Optoelectronic TechnologyLishui UniversityLishui 323000China Xinjiang Key Laboratory of Radio AstrophysicsUrumqi 830011China Research Center for Intelligent Computing PlatformsZhejiang LaboratoryHangzhou 311100China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2024年第24卷第4期

页      面：114-123页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the Major Science and Technology Program of Xinjiang Uygur Autonomous Region(grant no.2022A03013-4) the Zhejiang Provincial Natural Science Foundation of China(grant no.LY23A030001) the National SKA Program of China(grant no.2020SKA0120100,2022YFC2205201,2020SKA0120200) the Natural Science Foundation of Xinjiang Uygur Autonomous Region(grant no.2022D01D85) the National Natural Science Foundation of China(NSFC,grant Nos.12041304,12273100,and 12041303) the West Light Foundation of Chinese Academy of Sciences(grant no.WLFC 2021-XBQNXZ-027) the open program of the Key Laboratory of Xinjiang Uygur Autonomous Region(grant no.2020D04049)。 

主　　题：(stars:)pulsars:general stars:neutron stars:individual(PSRs J1919+1745.1909+0641,0628+0909) 

摘      要：Rotating Radio Transients(RRATs)are a relatively new subclass of pulsars that emit detectable radio bursts sporadically.We analyzed 10 RRATs observed using the Parkes telescope,with eight of these observed via the ultra-wide-bandwidth low-frequency(UWL)receiver.We measured the burst rate and produced integrated profiles spanning multiple frequency bands for three RRATs.We also conducted a spectral analysis on both integrated pulses and individual pulses of three RRATs.All of their integrated pulses follow a simple power law,consistent with the known range of pulsar spectral indices.Their average spectral indices of single pulses are-0.9,-1.2,and-1.0 respectively,which are within the known range of pulsar spectral indices.Additionally,we find that the spreads of single-pulse spectral indices for these RRATs(ranging from-3.5 to+0.5)are narrower compared to what has been observed in other RRATs.Notably,the average spectral index and scatter of single pulses are both relatively small.For the remaining five RRATs observed at the UWL receiver,we also provide the upper limits on fluence and flux density.In addition,we obtain the timing solution of PSR J1709-43.Our analysis shows that PSRs J1919+1745,J1709-43,and J1649-4653 are potentially nulling pulsars or weak pulsars with sparse strong pulses.