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

Autor:	Horst Fichtner, K. Scherer, E. L. Lau, John D. Anderson
Rok vydání:	1997
Předmět:	Physics Multidisciplinary Pulsar Sub-Earth Millisecond pulsar Planet Pulsar planet Astronomy Astrophysics Heliosphere Binary pulsar Exoplanet
Zdroj:	Science. 278:1919-1921
ISSN:	1095-9203 0036-8075
DOI:	10.1126/science.278.5345.1919
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aad511c07cb03375deb5fdddd0976815 https://doi.org/10.1126/science.278.5345.1919 Zobrazit plný text záznamu