TL;DR
This paper introduces a novel pulsar search method utilizing phase characteristics in radio data, enabling faster candidate identification with comparable accuracy to existing tools.
Contribution
The paper presents a new search diagnostic based on phase characteristics and demonstrates its effectiveness on FAST data, improving processing speed over PRESTO.
Findings
Achieved similar search results to PRESTO.
Faster processing speed in pulsar candidate search.
Validated method on FAST telescope data.
Abstract
We present a method by using the phase characteristics of radio observation data for pulsar search and candidate identification. The phase characteristics are relations between the pulsar signal and the phase correction in the frequency-domain, and we regard it as a new search diagnostic characteristic. Based on the phase characteristics, a search method is presented: calculating DM (dispersion measure) -- frequency data to select candidate frequencies, and then confirming of candidates by using the broadband characteristics of pulsar signals. Based on this method, we performed a search test on short observation data of M15 and M71, which were observed by Five-hundred-meter Aperture spherical radio Telescope (FAST), and some of the Galactic Plane Pulsar Snapshot survey (GPPS) data. Results show that it can get similar search results to PRESTO (PulsaR Exploration and Search TOolkit)…
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