Pushchino multibeam pulsar search: I. Targeted search of weak pulsars

Abstract

The search for pulsars in a sample of pulsar candidates found based on a multi-year survey conducted with low (6 channels; sampling 0.1s) time-frequency resolution on declinations -9^o < δ< +42^o was carried out. A Large Phased Array (LPA) transit telescope operating at 111 MHz in the 2.5 MHz band was used. Search, analysis and evidence of pulsar detection were carried out using a visualization program of summed up power spectra obtained from the survey data with high 32 channels; sampling 12.5ms) time-frequency resolution. 11 new pulsars with periods P0 = 0.41-3.75 s and dispersion measure DM=15-154 pc/cm^3 have been discovered. In total, in the survey with a low time-frequency resolution for the period 2016-2021 in a blind search, 208 pulsars were found, of them 42 new and 166 known pulsars. It is shown that in the search on the data with high time-frequency resolution accumulated over a time interval of 7 years, pulsars with a flux density of 0.1 - 0.2 mJy at the frequency of 111 MHz can be detected. When searching for pulsars with regular (periodic) emission at declinations +21^o < δ< +42^o, all pulsars located outside the galactic plane, having P0 \ge 0.5 s, DM \le 100 pc/cm^3 and the flux density S \ge 0.5 mJy, can be detected

13 pages, 7 figures, submitted to MNRAS

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Cited by in corpus (11)

• The FAST Galactic Plane Pulsar Snapshot survey: VI. The discovery of 473 new pulsars
• The FAST Galactic Plane Pulsar Snapshot Survey: III. Timing results of 30 FAST-GPPS discovered pulsars
• Pushchino multibeams pulsar search. IV. Detection of new pulsars at declinations -9o < δ< +55o
• Pushchino multibeam pulsar search -- II. Long-term variability of RRATs
• Detection of two new RRATs at 111 MHz
• Search for pulsars with periods of more than two seconds at declinations from +21${}^o$ to +42${}^o$
• Interplanetary scintillation and pulsar pulse statistics
• Search for interpulses in a complete sample of pulsars at a frequency of 111 MHz
• Variations in the Radiation Intensity of Pulsar B0950+08: Nine Years of Monitoring at 110 MHz
• Search for weak components in pulsar radiation
• Pushchino multibeams pulsar search -- III. Drift periods of pulsars from summed power spectra method