The Low-Frequency Radio Eclipses of the Black Widow Pulsar J1810+1744

E. J. Polzin; R. P. Breton; A. O. Clarke; V. I. Kondratiev; B. W. Stappers; J. W. T. Hessels; C. G. Bassa; J. W. Broderick; J. -M. Grießmeier; C. Sobey; S. ter Veen; J. van Leeuwen; P. Weltevrede

doi:10.1093/mnras/sty349

The Low-Frequency Radio Eclipses of the Black Widow Pulsar J1810+1744

E. J. Polzin, R. P. Breton, A. O. Clarke, V. I. Kondratiev, B. W. Stappers, J. W. T. Hessels, C. G. Bassa, J. W. Broderick, J. -M. Grießmeier, C. Sobey, S. ter Veen, J. van Leeuwen, P. Weltevrede

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Abstract

We have observed and analysed the eclipses of the black widow pulsar J1810+1744 at low radio frequencies. Using LOw-Frequency ARray (LOFAR) and Westerbork Synthesis Radio Telescope observations between 2011--2015 we have measured variations in flux density, dispersion measure and scattering around eclipses. High-time-resolution, simultaneous beamformed and interferometric imaging LOFAR observations show concurrent disappearance of pulsations and total flux from the source during the eclipses, with a $3\sigma$ upper limit of 36 mJy ($pulsars averaged out-of-eclipse flux density). The dispersion measure variations are highly asymmetric, suggesting a tail of material swept back due to orbital motion. The egress deviations are variable on timescales shorter than the 3.6 hr orbital period and are indicative of a clumpy medium. Additional pulse broadening detected during egress is typically $

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society
Early online date	9 Feb 2018
DOIs	https://doi.org/10.1093/mnras/sty349
Publication status	Published - 2018

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astro-ph.HE

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Polzin, E. J., Breton, R. P., Clarke, A. O., Kondratiev, V. I., Stappers, B. W., Hessels, J. W. T., Bassa, C. G., Broderick, J. W., Grießmeier, J. .-M., Sobey, C., Veen, S. T., Leeuwen, J. V., & Weltevrede, P. (2018). The Low-Frequency Radio Eclipses of the Black Widow Pulsar J1810+1744. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1093/mnras/sty349

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title = "The Low-Frequency Radio Eclipses of the Black Widow Pulsar J1810+1744",

abstract = "We have observed and analysed the eclipses of the black widow pulsar J1810+1744 at low radio frequencies. Using LOw-Frequency ARray (LOFAR) and Westerbork Synthesis Radio Telescope observations between 2011--2015 we have measured variations in flux density, dispersion measure and scattering around eclipses. High-time-resolution, simultaneous beamformed and interferometric imaging LOFAR observations show concurrent disappearance of pulsations and total flux from the source during the eclipses, with a $3\sigma$ upper limit of 36 mJy ($pulsars averaged out-of-eclipse flux density). The dispersion measure variations are highly asymmetric, suggesting a tail of material swept back due to orbital motion. The egress deviations are variable on timescales shorter than the 3.6 hr orbital period and are indicative of a clumpy medium. Additional pulse broadening detected during egress is typically $",

keywords = "astro-ph.HE",

author = "Polzin, {E. J.} and Breton, {R. P.} and Clarke, {A. O.} and Kondratiev, {V. I.} and Stappers, {B. W.} and Hessels, {J. W. T.} and Bassa, {C. G.} and Broderick, {J. W.} and Grie{\ss}meier, {J. -M.} and C. Sobey and Veen, {S. ter} and Leeuwen, {J. van} and P. Weltevrede",

note = "15 pages, 9 figures",

year = "2018",

doi = "10.1093/mnras/sty349",

language = "English",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "1365-2966",

publisher = "Oxford University Press",

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TY - JOUR

T1 - The Low-Frequency Radio Eclipses of the Black Widow Pulsar J1810+1744

AU - Polzin, E. J.

AU - Breton, R. P.

AU - Clarke, A. O.

AU - Kondratiev, V. I.

AU - Stappers, B. W.

AU - Hessels, J. W. T.

AU - Bassa, C. G.

AU - Broderick, J. W.

AU - Grießmeier, J. -M.

AU - Sobey, C.

AU - Veen, S. ter

AU - Leeuwen, J. van

AU - Weltevrede, P.

N1 - 15 pages, 9 figures

PY - 2018

Y1 - 2018

N2 - We have observed and analysed the eclipses of the black widow pulsar J1810+1744 at low radio frequencies. Using LOw-Frequency ARray (LOFAR) and Westerbork Synthesis Radio Telescope observations between 2011--2015 we have measured variations in flux density, dispersion measure and scattering around eclipses. High-time-resolution, simultaneous beamformed and interferometric imaging LOFAR observations show concurrent disappearance of pulsations and total flux from the source during the eclipses, with a $3\sigma$ upper limit of 36 mJy ($pulsars averaged out-of-eclipse flux density). The dispersion measure variations are highly asymmetric, suggesting a tail of material swept back due to orbital motion. The egress deviations are variable on timescales shorter than the 3.6 hr orbital period and are indicative of a clumpy medium. Additional pulse broadening detected during egress is typically $

AB - We have observed and analysed the eclipses of the black widow pulsar J1810+1744 at low radio frequencies. Using LOw-Frequency ARray (LOFAR) and Westerbork Synthesis Radio Telescope observations between 2011--2015 we have measured variations in flux density, dispersion measure and scattering around eclipses. High-time-resolution, simultaneous beamformed and interferometric imaging LOFAR observations show concurrent disappearance of pulsations and total flux from the source during the eclipses, with a $3\sigma$ upper limit of 36 mJy ($pulsars averaged out-of-eclipse flux density). The dispersion measure variations are highly asymmetric, suggesting a tail of material swept back due to orbital motion. The egress deviations are variable on timescales shorter than the 3.6 hr orbital period and are indicative of a clumpy medium. Additional pulse broadening detected during egress is typically $

KW - astro-ph.HE

U2 - 10.1093/mnras/sty349

DO - 10.1093/mnras/sty349

M3 - Article

SN - 1365-2966

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

The Low-Frequency Radio Eclipses of the Black Widow Pulsar J1810+1744

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