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Paper: A pulsar timing tutorial and NRAO Green Bank observations of PSR 1257+12
Volume: 36, Planets Around Pulsars
Page: 11
Authors: Backer, D. C.
Abstract: The steps required in precise timing of pulsars, including pulsars with orbital perturbations, are outlined. Observations of PSR 1257+12 confirm the double periodicity reported by Wolszczan and Frail (1992) with independent data and independent analysis. Observations of PSR 1855+09 compare favorably with a timing model based on independent data and thus serve as a clock and system check. The timing of PSR 1620-26, an 11-ms pulsar in the globular cluster M4, show a large period second derivative which, if gravitational, indicates a low mass companion or an encounter at distances of 10-100 AU.
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