A study of periodic single-pulse emission behavior in PSR J1819+1305 using L-band observations from the FAST
4 affiliations
- 1School of Physics and Electronic Science , Guizhou Normal University, Guiyang 550025 ,
- 2Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing , Guizhou Normal University, Guiyang 550025 ,
- 3National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101 ,
- 4Nanjing Institute of Astronomical Optics & Technology, National Astronomical Observatories , CAS, Nanjing 210042 ,
Abstract
This paper reports a detailed study of the single pulses of PSR J1819+1305 using L-band observations from the FAST. Using the unprecedented ultra-high sensitivity of FAST, we observed PSR J1819+1305 to estimate its nulling period and fraction, identify its pulse nulling and burst states, and analyze its subpulse drifting, pulse profile and polarization properties. Based on the analysis of polarization, the magnetospheric configuration was constrained, and the emission heights were estimated. Our study reveal that single pulse of this pulsar displays a periodic nulling with a nulling fraction of ∼32.9% and nulling period of 50P1. Both values are smaller than those obtained from previous low-frequency (327 MHz, 430 MHz) observations. Analyses of single-pulse energy temporal variations further indicate notable differences in the average pulse profile geometries between the last burst pulse preceding the nulling state and the first burst pulse following it. Within the trailing component, we detected subpulse drifting with a period of P2 = 2.08 ± 0.03P1 and amplitude modulation with a period of P3 = 6.65 ± 0.04P1, where P1 is spin period of PSR J1819+1305. Additionally, we determine the magnetic inclination angle α ≈ 131.36○ and impact angle β ≈ 3.36○ of this pulsar using the RVM model and MCMC method, and further derive emission heights of rgeo = 735.76 ± 11.00 km and rdelay = 782.36 ± 77.39 km via the emission geometry and aberration-retardation correction methods, respectively. This study expands the multi-band observational sample of pulsars with periodic nulling, amplitude modulation, and subpulse drifting, thereby laying a foundation for future studies of statistical and radiation mechanism.
Related
- Single-pulse reanalysis of the 2024 Vela glitch and new observations of PSR~J0437−4715 and PSR~J1644−4559
- Spin-disc misalignment drives periodic accretion and pulse profile asymmetry in X-ray pulsars
- A Physically Motivated Compact Parameterization of Neutron Star Atmosphere Emission for Thermal X-ray Pulse-Profile Modeling
- Investigating the subpulse drifting and periodic nulling behavior of the long-period pulsar PSR J1831-1223 with FAST
- JWST Observations of Calcium-Strong Transients: I. Complex Nebular He Emission in SN 2024uj
BibTeX
@article{shang2026study,
title = {{A study of periodic single-pulse emission behavior in PSR J1819+1305 using L-band observations from the FAST}},
author = {L H Shang and Y Yu and Y L Liang},
journal = {Monthly Notices of the Royal Astronomical Society},
year = {2026},
month = oct,
doi = {10.1093/mnras/stag2009},
url = {https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag2009/8979806},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - A study of periodic single-pulse emission behavior in PSR J1819+1305 using L-band observations from the FAST
AU - L H Shang
AU - Y Yu
AU - Y L Liang
PY - 2026
DA - 2026/10/22
JO - Monthly Notices of the Royal Astronomical Society
DO - 10.1093/mnras/stag2009
UR - https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag2009/8979806
AB - This paper reports a detailed study of the single pulses of PSR J1819+1305 using L-band observations from the FAST. Using the unprecedented ultra-high sensitivity of FAST, we observed PSR J1819+1305 to estimate its nulling period and fraction, identify its pulse nulling and burst states, and analyze its subpulse drifting, pulse profile and polarization properties. Based on the analysis of polarization, the magnetospheric configuration was constrained, and the emission heights were estimated. Our study reveal that single pulse of this pulsar displays a periodic nulling with a nulling fraction of ∼32.9% and nulling period of 50P1. Both values are smaller than those obtained from previous low-frequency (327 MHz, 430 MHz) observations. Analyses of single-pulse energy temporal variations further indicate notable differences in the average pulse profile geometries between the last burst pulse preceding the nulling state and the first burst pulse following it. Within the trailing component, we detected subpulse drifting with a period of P2 = 2.08 ± 0.03P1 and amplitude modulation with a period of P3 = 6.65 ± 0.04P1, where P1 is spin period of PSR J1819+1305. Additionally, we determine the magnetic inclination angle α ≈ 131.36○ and impact angle β ≈ 3.36○ of this pulsar using the RVM model and MCMC method, and further derive emission heights of rgeo = 735.76 ± 11.00 km and rdelay = 782.36 ± 77.39 km via the emission geometry and aberration-retardation correction methods, respectively. This study expands the multi-band observational sample of pulsars with periodic nulling, amplitude modulation, and subpulse drifting, thereby laying a foundation for future studies of statistical and radiation mechanism.
SN - 0035-8711
SN - 1365-2966
ER -