Abstract
We have carried out a detailed study of the single pulse of PSR J1946 + 1805 with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). We reassessed the nulling fraction (NF) to be 57.5%. We also reverted the multiple drifting modes and obtained their drifting parameters. It is found that, for this pulsar, there exists the dwarf pulse at the beginning or end of the burst state, and the duration of dwarf pulse usually is one to two pulse periods. Additionally, we observed that there are scattered dwarf pulses detected in the null state. Detailed analysis of the fraction of linear polarization for all dwarf pulse is presented. It is worth noting that relative to normal pulses these dwarf pulses have a very high fraction of linear polarization, even more than 90%. We proposed that the dwarf pulses appearing at the beginning or end of the burst state may be a common behavior, which is important to understand the physical mechanism of the process of switching between two states.
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29 February 2024
The original version of this article has been revised: Figure 5 has been corrected.
05 March 2024
A Correction to this paper has been published: https://doi.org/10.1007/s10509-024-04289-4
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Acknowledgements
This work is supported by he National Natural Science Foundation of China (No. 12273008), the National SKA Program of China (No.2022SKA0130104), the Natural Science and Technology Foundation of Guizhou Province (Nos. [2023]024, ZK[2022]304), the Foundation of Guizhou Provincial Education Department (Nos. KY (2020) 003, KY[2022]137, KY[2022]132), the Academic New Seedling Fund Project of Guizhou Normal University (No. [2022]B18), the Major Science and Technology Program of Xinjiang Uygur Autonomous Region (No.2022A03013-4). This work uses the data from the FAST telescope (Five-hundred-meter Aperture Spherical radio Telescope). FAST is a Chinese national mega-science facility, built and operated by the National Astronomical Observatories, Chinese Academy of Sciences.
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J.T. processed the data; Q.J.Z, S.J.D. and J.T. drafted the paper; X.X. contribued to the writing and analysis, J.T.B., J.G.L., L.H S., S.D.,D.D.Z., G.J.Q., R.S.Z., A.J.D. and W.Q.Z. contributed to analysis of the paper.
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The original version of this article has been revised: Figure 5 has been corrected.
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Tian, J., Xu, X., Bai, J. et al. Investigation of states switch properties of PSR J1946 + 1805 with the FAST. Astrophys Space Sci 369, 21 (2024). https://doi.org/10.1007/s10509-024-04284-9
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DOI: https://doi.org/10.1007/s10509-024-04284-9