A polarization census of bright pulsars using the ultrawideband receiver on the Parkes radio telescope

被引：18

作者：

Sobey, C. ^{[1
]}

Johnston, S. ^{[2
]}

Dai, S. ^{[2
]}

Kerr, M. ^{[3
]}

Manchester, R. N. ^{[2
]}

Oswald, L. S. ^{[4
]}

Parthasarathy, A. ^{[5
]}

Shannon, R. M. ^{[6
,7
]}

Weltevrede, P. ^{[8
]}

机构：

[1] CSIRO Astron & Space Sci, POB 1130, Bentley, WA 6102, Australia

[2] CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia

[3] Naval Res Lab, Space Sci Div, Washington, DC 20375 USA

[4] Univ Oxford, Dept Astrophys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England

[5] Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany

[6] Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218, Hawthorn, Vic 3122, Australia

[7] Swinburne Univ Technol, OzGrav Australian Res Council Ctr Excellence Grav, Mail H74,POB 218, Melbourne, Vic 3122, Australia

[8] Univ Manchester, Jodrell Bank, Ctr Astrophys, Alan Turing Bldg, Manchester M13 9PL, Lancs, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2021年 / 504卷 / 01期

基金：

英国科学技术设施理事会; 澳大利亚研究理事会;

关键词：

polarization; (stars:) pulsars: general; ISM: magnetic fields; DEPENDENT DISPERSION MEASURES; FARADAY-ROTATION MEASUREMENTS; CIRCULAR-POLARIZATION; SOUTHERN PULSARS; MAGNETIC-FIELD; LOW-FREQUENCY; LINEAR-POLARIZATION; ELECTRON-DENSITY; PARAMETERS; PROFILES;

D O I：

10.1093/mnras/stab861

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present high signal-to-noise ratio, full polarization pulse profiles for 40 bright, 'slowly' rotating (non-recycled) pulsars using the new ultrawideband low-frequency (UWL; 704-4032MHz) receiver on the Parkes radio telescope. We obtain updated and accurate interstellar medium parameters towards these pulsars (dispersion measures and Faraday rotation measures), and reveal Faraday dispersion towards PSR J1721-3532 caused by interstellar scattering. We find general trends in the pulse profiles including decreasing fractional linear polarization and increasing degree of circular polarization with increasing frequency, consistent with previous studies, while also revealing new features and frequency evolution. This demonstrates results that can be obtained using UWL monitoring observations of slow pulsars, which are valuable for improving our understanding of pulsar emission and the intervening interstellar medium. The calibrated data products are publicly available.

引用

页码：228 / 247

页数：20

共 32 条

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