摘要
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 dispersion measure(DM)—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-hundredmeter Aperture Spherical radio Telescope,and some of the Galactic Plane Pulsar Snapshot survey data.Results show that it can get similar search results to PRESTO(Pulsa R Exploration and Search TOolkit)while having a faster processing speed.
基金
supported by the National Natural Science Foundation of China(Nos.12203039 and 11873083)
the National Natural Science Foundation of China(Nos.12173053 and 12041303)
supported by the National SKA Program of China(No.2020SKA0120100)
the Youth Innovation Promotion Association of CAS(id.2018075)
the CAS“Light of West China”Program
the Specialized Research Fund for State Key Laboratories
the Science and Technology Program of Guizhou Province([2021]4001)。
