首页|A Study of 10 Rotating Radio Transients Using Parkes Radio Telescope

A Study of 10 Rotating Radio Transients Using Parkes Radio Telescope

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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.

(stars:)pulsars:generalstars:neutronstars:individual(PSRs J1919+17451909+06410628+0909)

Xinhui Ren、Jingbo Wang、Wenming Yan、Jintao Xie、Shuangqiang Wang、Yirong Wen、Yong Xia

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Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Urumqi 830011,China

University of Chinese Academy of Sciences,Beijing 100049,China

Institute of Optoelectronic Technology,Lishui University,Lishui 323000,China

Xinjiang Key Laboratory of Radio Astrophysics,Urumqi 830011,China

Research Center for Intelligent Computing Platforms,Zhejiang Laboratory,Hangzhou 311100,China

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Australian Government to operate as a National Facility managed by CSIROMajor Science and Technology Program of Xinjiang Uygur Autonomous RegionZhejiang Provincial Natural Science Foundation of ChinaNational SKA Program of ChinaNational SKA Program of ChinaNational SKA Program of ChinaNatural Science Foundation of Xinjiang Uygur Autonomous RegionNational Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)West Light Foundation of Chinese Academy of Sciencesopen program of the Key Laboratory of Xinjiang Uygur Autonomous Region

2022A03013-4LY23A0300012020SKA01201002022YFC22052012020SKA01202002022D01D85120413041227310012041303WLFC 2021-XBQNXZ-0272020D04049

2024

10.1088/1674-4527/ad2dbe

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(4)