Testing the Hypothesis about the Existence of a Planet Orbiting the Pulsar B0329+54 (J0332+5434)

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Abstract

We have analyzed the results of our observations of the millisecond pulsar B0329+54 (J0332+5434), which exhibits quasi-periodic variations in the barycentric times of arrival (TOAs) of pulses
on long time scales. We have tested the hypothesis about the existence of a planet with a mass close to the mass of the terrestrial planets and an orbital period of 27.8 yr around this pulsar that was proposed previously to explain the variations in its TOAs. We show that this hypothesis is not confirmed when considering the series of TOA residuals over the entire available time interval of observations 1968–2022 and that the TOA variations for this pulsar apparently have a different physical cause.

About the authors

V. A. Potapov

Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Physical Institute, Russian Academy of Sciences, Pushchino, Moscow obl., 142290 Russia

Email: potap@prao.ru
Россия, Пущино

S. A. Andrianov

St. Petersburg State University, Mathematics and Mechanics Faculty, St. Petersburg, 198504 Russia

Author for correspondence.
Email: st086842@student.spbu.ru
Россия, Санкт-Петербург

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