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Dispersion Measure toward the Pulsar PSR B1530+27 from Observations at 111 MHz

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Abstract

Observations of individual pulses from the pulsar PSR B1530+27 have been carried out. The dispersion measure (DM) toward this pulsar has been found from 11 084 pulses to be \(DM=14.6904\pm 0.0009\) pc cm\({}^{-3}\). The (\(3\sigma\)) upper limit on the DM derivative is \(|dDM/dt|<0.001\) pc cm\({}^{-3}\) yr\({}^{-1}\). The seasonal DM variations related to the passage of radiation through the interplanetary plasma do not exceed 0.01 pc cm\({}^{-3}\).

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ACKNOWLEDGMENTS

I am grateful to the staff of the Pushchino Radio Astronomy Observatory for the help with the observations, to T.V. Smirnova, S.A. Tyulbashev, and the referees for their useful remarks, and to S.V. Logvinenko for the PM (a spectrum analyzer with a fast Fourier transform) design.

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  1. Pushchino Radio Astronomy Observatory, Astrospace Center, Lebedev Physical Institute, Russian Academy of Sciences, 142290, Pushchino, Moscow oblast, Russia

    A. A. Ershov

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  1. A. A. Ershov
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Correspondence to A. A. Ershov.

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Translated by V. Astakhov

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Ershov, A.A. Dispersion Measure toward the Pulsar PSR B1530+27 from Observations at 111 MHz. Astron. Lett. 46, 826–830 (2020). https://doi.org/10.1134/S1063773720100060

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  • DOI: https://doi.org/10.1134/S1063773720100060

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