The FRB-searching pipeline of the Tianlai Cylinder Pathfinder Array
Zijie Yu, Furen Deng, Shijie Sun, Chenhui Niu, Jixia Li, Fengquan Wu,, Wei-Yang Wang, Yougang Wang, Shifan Zuo, Lin Shu, Jie Hao, Xiaohui Liu, Reza, Ansari, Ue-Li Pen, Albert Stebbins, Peter Timbie, Xuelei Chen

TL;DR
This paper details the design and implementation of a real-time FRB search pipeline for the Tianlai Cylinder Pathfinder Array, achieving successful detection of known pulsars and the first FRB discovery with high recall.
Contribution
It introduces a novel real-time FRB search pipeline integrated with the Tianlai array, including calibration, survey strategy, and beam arrangement optimization.
Findings
Detected four known pulsars during commissioning.
Achieved an 88% recall rate in FRB candidate detection.
Reported the first FRB discovery by the Tianlai array.
Abstract
This paper presents the design, calibration, and survey strategy of the Fast Radio Burst (FRB) digital backend and its real-time data processing pipeline employed in the Tianlai Cylinder Pathfinder array. The array, consisting of three parallel cylindrical reflectors and equipped with 96 dual-polarization feeds, is a radio interferometer array designed for conducting drift scans of the northern celestial semi-sphere. The FRB digital backend enables the formation of 96 digital beams, effectively covering an area of approximately 40 square degrees with 3 dB beam. Our pipeline demonstrates the capability to make automatic search of FRBs, detecting at quasi-real-time and classify FRB candidates automatically. The current FRB searching pipeline has an overall recall rate of 88\%. During the commissioning phase, we successfully detected signals emitted by four well-known pulsars: PSR…
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Taxonomy
TopicsRadio Astronomy Observations and Technology · Pulsars and Gravitational Waves Research · Geophysics and Gravity Measurements
