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Tempo is a computer program to analyze radio observations of pulsars. Once enough observations are available, Tempo can deduce the pulsar rotation rate and phase, astrometric position and rates of change, and parameters of binary systems, by fitting models to pulse times of arrival measured at one or more terrestrial observatories. This is a non-trivial procedure because much larger effects must be removed before the detailed fit can be performed. These include: * Dispersion of the pulses in the Interstellar medium, the solar system, and the ionosphere * Observatory motion (including Earth rotation, precession, nutation, polar motion and orbital motion) * Tropospheric propagation delay * Gravitational time dilation due to binary companions and Solar system bodies. Tempo is maintained and distributed by Princeton University and the Australia Telescope National Facility. There is a reference manual available, but no general documentation. Tempo is a relatively old program, and is being replaced by Tempo2. The main advantages of Tempo2, from the abstract, are:
== See also == *Pulsar *Binary pulsar 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tempo (astronomy)」の詳細全文を読む スポンサード リンク
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