Are there really planets around PSR 1257+12?

Details Are there really planets around PSR 1257+12? Are there really planets around PSR 1257+12?

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aspc...36...71g&link_type=abstract

In: Planets around pulsars; Proceedings of the Conference, California Inst. of Technology, Pasadena, Apr. 30-May 1, 1992 (A93-36

Physics

3

Extrasolar Planets, Pulsars, Stellar Models, Stellar Rotation, Planetary Systems, Precession

Scientific paper

A hypothesis is proposed that the combination of effects involving precession and/or nutation of the spin axis and/or migration of the magnetic axis around the spin axis is responsible for the observed residuals in PSR 1257+12. To account for the observed time-of-arrivals (TOA) variations, the actual processes should work in opposite directions and have time scale equal or longer than periodicities identified in PSR 1257+12. The two strict periodicities contributing to the observed TOA variations and the amplitude of the TOA residuals close to P/2 are natural consequences of the proposed model. Two relevant geometrical configurations are discussed to account for the observed profile of PSR 1259+25.

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