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Search for Pulsars in an Area with Coordinates 3h < α < 4h and +21° < δ < +42°
- Authors: Tyul’bashev S.A.1, Tyul’basheva G.E.2
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Affiliations:
- Lebedev Physical Institute, Russian Academy of Sciences, Pushchino Radio Astronomy Observatory, Astro Space Center
- Institute of Mathematical Problems of Biology, Russian Academy of Sciences, Branch of the Keldysh Institute of Applied Mathematics
- Issue: Vol 100, No 2 (2023)
- Pages: 196-205
- Section: Articles
- URL: https://journals.rcsi.science/0004-6299/article/view/139066
- DOI: https://doi.org/10.31857/S0004629923020093
- EDN: https://elibrary.ru/CKUCJT
- ID: 139066
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Abstract
The search for pulsars outside the plane of the galaxy in an area of 300 sq. deg. was carried out with the LPA LPI antenna at 111 MHz, with a sensitivity 5 to 10 times better than that of previous surveys. The search was performed in the summed power spectra. With an accumulation time equivalent to 100 hours of continuous observations for each point of the area, 5 known pulsars were found with a signal-to-noise ratio (S/N) from 20 to 1300 in the first harmonic of the spectrum. Average profiles are obtained for the detected pulsars. Estimates are given for the peak and integrated flux densities of the found pulsars for individual sessions and for power spectra summed over 5.5 years, using the developed method based on measurements of harmonic heights in the power spectrum. No new pulsars were found in the area. Apparently, when searching for pulsars in the area, we approached the lower limit of the luminosity of second pulsars. The survey completeness is at the level of 0.5 mJy.
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About the authors
S. A. Tyul’bashev
Lebedev Physical Institute, Russian Academy of Sciences, Pushchino Radio Astronomy Observatory, Astro Space Center
Email: serg@prao.ru
142290, Pushchino, Russia
G. E. Tyul’basheva
Institute of Mathematical Problems of Biology, Russian Academy of Sciences, Branch of the Keldysh Institute of Applied Mathematics
Author for correspondence.
Email: serg@prao.ru
142290, Pushchino, Russia
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