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Searches for Pulsar Planetary Systems

Published online by Cambridge University Press:  19 September 2017

T. Joseph W. Lazio ,
J. Fischer  and
James M. Cordes
T. Joseph W. Lazio
Affiliation:
Naval Research Laboratory, Code 7213, Washington, DC 20375-5351 USA; [email protected]; [email protected]
J. Fischer
Affiliation:
Naval Research Laboratory, Code 7213, Washington, DC 20375-5351 USA; [email protected]; [email protected]
James M. Cordes
Affiliation:
Astronomy Dept. and NAIC, Cornell University, Ithaca, NY 14853-6801 USA; [email protected]

Abstract

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The first extrasolar planetary system was discovered around the pulsar PSR B1257+12, and the planets therein remain the lowest mass exoplanets known (with one whose mass is of order a lunar mass). Pulsar planetary systems will remain the only extrasolar planetary systems within which terrestrial-mass planets can be detected for the near future, and multiple pulsar planetary systems would provide strong circumstantial evidence that terrestrial-mass planets are ubiquitous, and possibly information about the formation of terrestrial-mass planets. We summarize two searches for planetary or proto-planetary systems around pulsars. The first is a series of infrared observations of millisecond pulsars in which the objective is to detect (proto-planetary) disks. The second uses a genetic algorithm—a function optimization method based on evolutionary processes in the natural world—to search for the signatures of planetary perturbations in pulse timing data.

Type
Extrasolar Planets
Information
Symposium - International Astronomical Union , Volume 213: Bioastronomy 2002: Life Among the stars , 2004 , pp. 101 - 106
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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