A Pulsar, the Heliosphere, and Pioneer 10: Probable Mimicking of a Planet of PSR B1257+12 by Solar Rotation-Reference-Cited by-同舟云学术

A Pulsar, the Heliosphere, and Pioneer 10: Probable Mimicking of a Planet of PSR B1257+12 by Solar Rotation

Published:1997-12-12 Issue:5345 Volume:278 Page:1919-1921
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Scherer Klaus¹²,Fichtner Horst¹²,Anderson John D.¹²,Lau Eunice L.¹²

Affiliation:

1. K. Scherer, J. D. Anderson, E. L. Lau, Jet Propulsion Laboratory, Mail Stop 301/230, Pasadena, CA 91119, USA.

2. H. Fichtner, Institut für Astrophysik und Extraterrestrische Forschung der Universität Bonn, Auf dem Hügel 71, D-53121 Bonn, Germany.

Abstract

Doppler data generated with the Pioneer 10 spacecraft's radio carrier wave between 1987 and 1995 show a 25.3-day periodicity which is related to the solar rotation. The timing data of the pulsar PSR B1257+12 also show a periodicity of 25.34 days, which has been explained as a signature of the pulsar's barycentric motion in response to the existence of a small moon-like object. However, because PSR B1257+12 is located close to the ecliptic and because the timing variations are in the range of microseconds, it is likely that the pulsar signal is affected by the same mechanism acting on the Pioneer 10 Doppler data. Hence, the hypothesized inner planet around PSR B1257+12 is probably an artifact of the heliosphere.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference20 articles.

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