Polarization studies of black widows PSRs B1957+20, J2055+3829, and J1544+4937

ABSTRACT We present an analysis of the polarization of three black widow pulsars, PSRs B1957+20, J2055+3829, and J1544+4937, at 1250 MHz using the Five-hundred-meter Aperture Spherical radio Telescope. Radio eclipses for PSRs B1957+20 and J2055+3829 are detected, while the radio emission for J1544+4937 is detected throughout the eclipse. We study the polarization and dispersion measure properties of the pulsars near and during the eclipse. The position angle of the linear polarization is observed to shift at the eclipse boundary in all of these three pulsars, implying a lower limit line-of-sight magnetic field strength of the eclipse medium of approximately a few milligauss (mG) to tens of mG. We also find evidence that the magnetic field in the eclipse medium of PSRs B1957+20 and J1544+4937 reverses.

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Publication Details

Journal
Monthly Notices of the Royal Astronomical Society
Published
2025-06-17
DOI
https://doi.org/10.1093/mnras/staf990
Citations
1
Primary Topic
Pulsars and Gravitational Waves Research
Type
article
Field-Weighted Citation Impact
1.15

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article

Polarization studies of black widows PSRs B1957+20, J2055+3829, and J1544+4937

Rui Luo, Shi Dai, G. Hobbs, Andrew Zic et al.
1 citations
Monthly Notices of the Royal Astronomical Society
Pulsars and Gravitational Waves Research
1.15
article

Polarization studies of black widows PSRs B1957+20, J2055+3829, and J1544+4937

Rui Luo, Shi Dai, G. Hobbs, Andrew Zic, Jingbo Wang, Na Wang, Shuangqiang Wang
article en
1 citations

Abstract

ABSTRACT We present an analysis of the polarization of three black widow pulsars, PSRs B1957+20, J2055+3829, and J1544+4937, at 1250 MHz using the Five-hundred-meter Aperture Spherical radio Telescope. Radio eclipses for PSRs B1957+20 and J2055+3829 are detected, while the radio emission for J1544+4937 is detected throughout the eclipse. We study the polarization and dispersion measure properties of the pulsars near and during the eclipse. The position angle of the linear polarization is observed to shift at the eclipse boundary in all of these three pulsars, implying a lower limit line-of-sight magnetic field strength of the eclipse medium of approximately a few milligauss (mG) to tens of mG. We also find evidence that the magnetic field in the eclipse medium of PSRs B1957+20 and J1544+4937 reverses.

Monthly Notices of the Royal Astronomical SocietyVol. 541(1)
Commonwealth Scientific and Industrial Research Organisation (AU), Chinese Academy of Sciences (CN), Xinjiang Astronomical Observatory (CN), Lishui University (CN), Guangzhou University (CN), Astronomy and Space (AU), National Astronomical Observatories (CN)
National Natural Science Foundation of China, Chinese Academy of Sciences, Natural Science Foundation of Xinjiang, National Key Research and Development Program of China, National Astronomical Observatories, Chinese Academy of Sciences
Openalex Percentile: Top 18%
Pulsars and Gravitational Waves Research
1.15
DOIOpen Access PDFOpenAlex
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Polarization studies of black widows PSRs B1957+20, J2055+3829, and J1544+4937 — Rui Luo, Shi Dai, et al. · Monthly Notices of the Royal Astronomical Society (2025) | TGRS Research Map | TGRS