Search for interpulses in a complete sample of pulsars at a frequency of 111 MHz
- Authors: Toropov M.O.1, Tyul’bashev S.A.2, Beskin V.S.2,3
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Affiliations:
- LLC TEK Inform
- Lebedev Physical Institute
- Moscow Institute of Physics and Technology (MIPT)
- Issue: Vol 101, No 12 (2024)
- Pages: 1084-1094
- Section: Articles
- URL: https://rjmseer.com/0004-6299/article/view/647687
- DOI: https://doi.org/10.31857/S0004629924120062
- EDN: https://elibrary.ru/ICLIPB
- ID: 647687
Cite item
Abstract
An interpulse search was carried out in a sample of 96 pulsars observed on the Large Phased Array (LPA) radio telescope in the Pushchino Multibeams Pulsar Search (PUMPS). The pulsar sample is complete for pulsars having a signal-to-noise ratio (S/N) in the main pulse (MP) greater than 40. To search for weak interpulses (IP), the addition of average profiles over an interval of up to 10 years was used. Interpulses were detected in 12 pulsars (12.5% of the sample), of which 7 pulsars have an interpulse located near the 180◦ phase relative to the main pulse (probable orthogonal rotators), and 5 have phases far from 180◦ (probable coaxial rotators). The amplitude ratios of IP/MP are in the range of 0.004−0.023, the median value is 0.01. Estimates of the observed number of coaxial and orthogonal rotators with IP/MP ≥0.01 do not contradict the model according to which, during evolution, the magnetic axis and the axis of rotation become orthogonal.
About the authors
M. O. Toropov
LLC TEK Inform
Email: serg@prao.ru
Russian Federation, Moscow
S. A. Tyul’bashev
Lebedev Physical Institute
Author for correspondence.
Email: serg@prao.ru
Astro-Space Center, Pushchino radio astronomy observatory
Russian Federation, PushchinoV. S. Beskin
Lebedev Physical Institute; Moscow Institute of Physics and Technology (MIPT)
Email: serg@prao.ru
Russian Federation, Moscow; Dolgoprudnyi
References
- R.N. Manchester, G.B. Hobbs, A. Teoh, and M. Hobbs, Astron. J. 129(4), 1993 (2005).
- J. Gil, Astron. and Astrophys. 127, 267 (1983).
- K. Maciesiak, J. Gil, and V.A.R.M. Ribeiro, Monthly Not. Roy. Astron. Soc. 414(2), 1314 (2011).
- D.R. Lorimer and M. Kramer, Handbook of Pulsar Astronomy (Cambridge, UK: Cambridge University Press, 2012).
- L. Davis and M. Goldstein, Astrophys. J. Letters 159, L81 (1970).
- R.N. Manchester and A.G. Lyne, Monthly Not. Roy. Astron. Soc. 181, 761 (1977).
- P. Goldreich, Astrophys. J. Letters 160, L11 (1970).
- A. Philippov, A. Tchekhovskoy, and J.G. Li, Monthly Not. Roy. Astron. Soc. 441(3), 1879 (2014).
- V.S. Beskin, A.V. Gurevich, and Y.N. Istomin, Physics of the Pulsar Magnetosphere (Cambridge, New York: Cambridge University Press, 1993).
- A.G. Lyne, C.A. Jordan, F. Graham-Smith, C.M. Espinoza, B.W. Stappers, and P. Weltevrede, Monthly Not. Roy. Astron. Soc. 446(1), 857 (2015).
- V.I. Shishov, I.V. Chashei, V.V. Oreshko, S.V. Logvinenko, et al., Astron. Rep. 60(12), 1067 (2016).
- S.A. Tyul’bashev, V.S. Tyul’bashev, V.V. Oreshko, and S.V. Logvinenko, Astron. Rep. 60(2), 220 (2016).
- S.A. Tyul’bashev, P.Y. Golysheva, V.S. Tyul’bashev, and I.A. Subaev, Astron. Rep. 63(11), 920 (2019).
- S.A. Tyul’bashev, M.A. Kitaeva, and G.E. Tyul’basheva, Monthly Not. Roy. Astron. Soc. 517(1), 1112 (2022).
- S.A. Tyul’bashev, G.E. Tyul’basheva, M.A. Kitaeva, I.L. Ovchinnikov, V.V. Oreshko, and S.V. Logvinenko, Monthly Not. Roy. Astron. Soc. 528(2), 2220 (2024).
- I.F. Malov and E.B. Nikitina, Astron. Rep. 57(11), 833 (2013).
- A.D. Kuz’min, B.Ya. Losovskii, and K.A. Lapaev, Astron. Rep. 51(8), 615 (2007).
- A.V. Pynzar’ and V.I. Shishov, Astron. Rep. 52(8), 623 (2008).
- P. Weltevrede and S. Johnston, Monthly Not. Roy. Astron. Soc. 387(4), 1755 (2008).
- P.F. Wang, J.L. Han, J. Xu, C. Wang, et al., Res. Astron. and Astrophys. 3(10), id. 104002 (2023).
- B. Posselt, A. Karastergiou, S. Johnston, A. Parthasarathy, et al., Monthly Not. Roy. Astron. Soc. 520(3), 4582 (2023).
- E.M. Novoselov, V.S. Beskin, A.K. Galishnikova, M.M. Rashkovetskyi, and A.V. Biryukov, Monthly Not. Roy. Astron. Soc. 494(3), 3899 (2020).
- L.I. Arzamasskiy, V.S. Beskin, and K.K. Pirov, Monthly Not. Roy. Astron. Soc. 466(2), 2325 (2017).
- A. Spitkovsky, Astrophys. J. Letters 648(1), L51 (2006).
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