Applying clock comparison methods to pulsar timing observations
- Chen, Siyuan
- Vernotte, François
- Rubiola, Enrico
DOIAbstract
International audienceFrequency metrology outperforms any other branch of metrology in accuracy (parts in 10^−16) and small fluctuations (<10^−17). In turn, among celestial bodies, the rotation speed of millisecond pulsars is by far the most stable (<10^−18). Therefore, the precise measurement of the time of arrival (TOA) of pulsar signals is expected to disclose information about cosmological phenomena, and to enlarge our astrophysical knowledge. Related to this topic, Pulsar Timing Array projects have been developed and operated for the last decades. The TOAs from a pulsar can be affected by local emission and environmental effects, in the direction of the propagation through the interstellar medium or universally by gravitational waves f...
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