A broadband radio study of PSR J0250+5854: the slowest-spinning radio pulsar knownCitation formats

  • External authors:
  • L. Bondonneau
  • J.-M. Grießmeier
  • J. W. T. Hessels
  • W. J. Huang
  • A. Karastergiou
  • V. I. Kondratiev
  • J. Künsemöller
  • D. Li
  • B. Peng
  • C. Sobey
  • C. M. Tan
  • G. Theureau
  • H. G. Wang
  • C. M. Zhang
  • B. Cecconi
  • J. N. Girard
  • A. Loh
  • P. Zarka

Standard

A broadband radio study of PSR J0250+5854: the slowest-spinning radio pulsar known. / Agar, Crispin H.; Weltevrede, Patrick; Bondonneau, L.; Grießmeier, J.-M.; Hessels, J. W. T.; Huang, W. J. ; Karastergiou, A.; Keith, Michael; Kondratiev, V. I. ; Künsemöller, J.; Li, D.; Peng, B.; Sobey, C.; Stappers, Benjamin; Tan, C. M. ; Theureau, G.; Wang, H. G.; Zhang, C. M. ; Cecconi, B.; Girard, J. N. ; Loh, A.; Zarka, P.

In: MNRAS, Vol. 508, No. 1, 06.10.2021, p. 1102–1114.

Research output: Contribution to journalArticlepeer-review

Harvard

Agar, CH, Weltevrede, P, Bondonneau, L, Grießmeier, J-M, Hessels, JWT, Huang, WJ, Karastergiou, A, Keith, M, Kondratiev, VI, Künsemöller, J, Li, D, Peng, B, Sobey, C, Stappers, B, Tan, CM, Theureau, G, Wang, HG, Zhang, CM, Cecconi, B, Girard, JN, Loh, A & Zarka, P 2021, 'A broadband radio study of PSR J0250+5854: the slowest-spinning radio pulsar known', MNRAS, vol. 508, no. 1, pp. 1102–1114. https://doi.org/10.1093/mnras/stab2496

APA

Agar, C. H., Weltevrede, P., Bondonneau, L., Grießmeier, J-M., Hessels, J. W. T., Huang, W. J., Karastergiou, A., Keith, M., Kondratiev, V. I., Künsemöller, J., Li, D., Peng, B., Sobey, C., Stappers, B., Tan, C. M., Theureau, G., Wang, H. G., Zhang, C. M., Cecconi, B., ... Zarka, P. (2021). A broadband radio study of PSR J0250+5854: the slowest-spinning radio pulsar known. MNRAS, 508(1), 1102–1114. https://doi.org/10.1093/mnras/stab2496

Vancouver

Agar CH, Weltevrede P, Bondonneau L, Grießmeier J-M, Hessels JWT, Huang WJ et al. A broadband radio study of PSR J0250+5854: the slowest-spinning radio pulsar known. MNRAS. 2021 Oct 6;508(1):1102–1114. https://doi.org/10.1093/mnras/stab2496

Author

Agar, Crispin H. ; Weltevrede, Patrick ; Bondonneau, L. ; Grießmeier, J.-M. ; Hessels, J. W. T. ; Huang, W. J. ; Karastergiou, A. ; Keith, Michael ; Kondratiev, V. I. ; Künsemöller, J. ; Li, D. ; Peng, B. ; Sobey, C. ; Stappers, Benjamin ; Tan, C. M. ; Theureau, G. ; Wang, H. G. ; Zhang, C. M. ; Cecconi, B. ; Girard, J. N. ; Loh, A. ; Zarka, P. / A broadband radio study of PSR J0250+5854: the slowest-spinning radio pulsar known. In: MNRAS. 2021 ; Vol. 508, No. 1. pp. 1102–1114.

Bibtex

@article{b376e0f5db954f9eb8f62b7d0284e93a,
title = "A broadband radio study of PSR J0250+5854: the slowest-spinning radio pulsar known",
abstract = "We present radio observations of the most slowly rotating known radio pulsar PSR J0250+5854. With a 23.5 s period, it is close, or even beyond, the P-Pdot diagram region thought to be occupied by active pulsars. The simultaneous observations with FAST, the Chilbolton and Effelsberg international LOFAR stations, and NenuFAR represent a five-fold increase in the spectral coverage of this object, with the detections at 1250 MHz (FAST) and 57 MHz (NenuFAR) being the highest- and lowest-frequency published respectively to date. We measure a flux density of 4±2 μJy at 1250 MHz and an exceptionally steep spectral index of -3.5+0.2-1.5, with a turnover below ~95 MHz. In conjunction with observations of this pulsar with the GBT and the LOFAR Core, we show that the intrinsic profile width increases drastically towards higher frequencies, contrary to the predictions of conventional radius-to-frequency mapping. We examine polarimetric data from FAST and the LOFAR Core and conclude that its polar cap radio emission is produced at an absolute height of several hundreds of kilometres around 1.5 GHz, similar to other rotation-powered pulsars across the population. Its beam is significantly underfilled at lower frequencies, or it narrows because of the disappearance of conal outriders. Finally, the results for PSR J0250+5854 and other slowly spinning rotation-powered pulsars are contrasted with the radio-detected magnetars. We conclude that magnetars have intrinsically wider radio beams than the slow rotation-powered pulsars, and that consequently the latter's lower beaming fraction is what makes objects such as PSR J0250+5854 so scarce.",
keywords = "pulsars, neutron stars, polarisation, magnetars, broadband, PSR J0250+5854",
author = "Agar, {Crispin H.} and Patrick Weltevrede and L. Bondonneau and J.-M. Grie{\ss}meier and Hessels, {J. W. T.} and Huang, {W. J.} and A. Karastergiou and Michael Keith and Kondratiev, {V. I.} and J. K{\"u}nsem{\"o}ller and D. Li and B. Peng and C. Sobey and Benjamin Stappers and Tan, {C. M.} and G. Theureau and Wang, {H. G.} and Zhang, {C. M.} and B. Cecconi and Girard, {J. N.} and A. Loh and P. Zarka",
year = "2021",
month = oct,
day = "6",
doi = "10.1093/mnras/stab2496",
language = "English",
volume = "508",
pages = "1102–1114",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "1365-2966",
publisher = "Oxford University Press",
number = "1",

}

RIS

TY - JOUR

T1 - A broadband radio study of PSR J0250+5854: the slowest-spinning radio pulsar known

AU - Agar, Crispin H.

AU - Weltevrede, Patrick

AU - Bondonneau, L.

AU - Grießmeier, J.-M.

AU - Hessels, J. W. T.

AU - Huang, W. J.

AU - Karastergiou, A.

AU - Keith, Michael

AU - Kondratiev, V. I.

AU - Künsemöller, J.

AU - Li, D.

AU - Peng, B.

AU - Sobey, C.

AU - Stappers, Benjamin

AU - Tan, C. M.

AU - Theureau, G.

AU - Wang, H. G.

AU - Zhang, C. M.

AU - Cecconi, B.

AU - Girard, J. N.

AU - Loh, A.

AU - Zarka, P.

PY - 2021/10/6

Y1 - 2021/10/6

N2 - We present radio observations of the most slowly rotating known radio pulsar PSR J0250+5854. With a 23.5 s period, it is close, or even beyond, the P-Pdot diagram region thought to be occupied by active pulsars. The simultaneous observations with FAST, the Chilbolton and Effelsberg international LOFAR stations, and NenuFAR represent a five-fold increase in the spectral coverage of this object, with the detections at 1250 MHz (FAST) and 57 MHz (NenuFAR) being the highest- and lowest-frequency published respectively to date. We measure a flux density of 4±2 μJy at 1250 MHz and an exceptionally steep spectral index of -3.5+0.2-1.5, with a turnover below ~95 MHz. In conjunction with observations of this pulsar with the GBT and the LOFAR Core, we show that the intrinsic profile width increases drastically towards higher frequencies, contrary to the predictions of conventional radius-to-frequency mapping. We examine polarimetric data from FAST and the LOFAR Core and conclude that its polar cap radio emission is produced at an absolute height of several hundreds of kilometres around 1.5 GHz, similar to other rotation-powered pulsars across the population. Its beam is significantly underfilled at lower frequencies, or it narrows because of the disappearance of conal outriders. Finally, the results for PSR J0250+5854 and other slowly spinning rotation-powered pulsars are contrasted with the radio-detected magnetars. We conclude that magnetars have intrinsically wider radio beams than the slow rotation-powered pulsars, and that consequently the latter's lower beaming fraction is what makes objects such as PSR J0250+5854 so scarce.

AB - We present radio observations of the most slowly rotating known radio pulsar PSR J0250+5854. With a 23.5 s period, it is close, or even beyond, the P-Pdot diagram region thought to be occupied by active pulsars. The simultaneous observations with FAST, the Chilbolton and Effelsberg international LOFAR stations, and NenuFAR represent a five-fold increase in the spectral coverage of this object, with the detections at 1250 MHz (FAST) and 57 MHz (NenuFAR) being the highest- and lowest-frequency published respectively to date. We measure a flux density of 4±2 μJy at 1250 MHz and an exceptionally steep spectral index of -3.5+0.2-1.5, with a turnover below ~95 MHz. In conjunction with observations of this pulsar with the GBT and the LOFAR Core, we show that the intrinsic profile width increases drastically towards higher frequencies, contrary to the predictions of conventional radius-to-frequency mapping. We examine polarimetric data from FAST and the LOFAR Core and conclude that its polar cap radio emission is produced at an absolute height of several hundreds of kilometres around 1.5 GHz, similar to other rotation-powered pulsars across the population. Its beam is significantly underfilled at lower frequencies, or it narrows because of the disappearance of conal outriders. Finally, the results for PSR J0250+5854 and other slowly spinning rotation-powered pulsars are contrasted with the radio-detected magnetars. We conclude that magnetars have intrinsically wider radio beams than the slow rotation-powered pulsars, and that consequently the latter's lower beaming fraction is what makes objects such as PSR J0250+5854 so scarce.

KW - pulsars

KW - neutron stars

KW - polarisation

KW - magnetars

KW - broadband

KW - PSR J0250+5854

UR - https://arxiv.org/abs/2109.00266

UR - https://academic.oup.com/mnras/article/508/1/1102/6366250

U2 - 10.1093/mnras/stab2496

DO - 10.1093/mnras/stab2496

M3 - Article

VL - 508

SP - 1102

EP - 1114

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 1365-2966

IS - 1

ER -