The FAST Galactic Plane Pulsar Snapshot Survey: II. Discovery of 76 Galactic rotating radio transients and their enigma
D. J. Zhou, J. L. Han, Jun Xu, Chen Wang, P. F. Wang, Tao Wang,, Wei-Cong Jing, Xue Chen, Yi Yan, Wei-Qi. Su, Heng-Qian Gan, Peng Jiang,, Jing-Hai Sun, Hong-Guang Wang, Na Wang, Shuang-Qiang Wang, Ren-Xin Xu, and, Xiao-Peng You

TL;DR
This paper reports the discovery of 76 new Galactic rotating radio transients (RRATs) using FAST, revealing that many are weak or nulling pulsars, and provides insights into their emission properties and relation to normal pulsars.
Contribution
The study introduces a sensitive single pulse search module for FAST, leading to the discovery of numerous new RRATs and detailed analysis of their emission characteristics and relation to normal pulsars.
Findings
76 new transient radio sources discovered
Most RRATs are weak or nulling pulsars with sporadic pulses
Polarization properties suggest emission regions similar to normal pulsars
Abstract
We are carrying out the GPPS survey by using the FAST, the most sensitive systematic pulsar survey in the Galactic plane. In addition to about 500 pulsars already discovered through normal periodical search, we report here the discovery of 76 new transient radio sources with sporadic strong pulses, detected by using the newly developed module for a sensitive single pulse search. Their small DM values suggest that they all are the Galactic RRATs. More radio pulses have been detected from 26 transient radio sources but no periods can be found due to a limited small number of pulses from all FAST observations. The following-up observations show that 16 transient sources are newly identified as being the prototypes of RRATs with a period already determined from more detected sporadic pulses, 10 sources are extremely nulling pulsars, and 24 sources are weak pulsars with sparse strong pulses.…
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Taxonomy
TopicsPulsars and Gravitational Waves Research · GNSS positioning and interference · Radio Astronomy Observations and Technology
