A Pulsar Time Scale Based on Parkes Observations in 1995–2010
- Авторы: Rodin A.E.1, Fedorova V.A.1,2
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Учреждения:
- Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Physical Institute
- Pushchino State Natural Science Institute
- Выпуск: Том 62, № 6 (2018)
- Страницы: 378-382
- Раздел: Article
- URL: https://journals.rcsi.science/1063-7729/article/view/191641
- DOI: https://doi.org/10.1134/S1063772918060057
- ID: 191641
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Аннотация
Timing of highly stable millisecond pulsars provides the possibility of independently verifying terrestrial time scales on intervals longer than a year. An ensemble pulsar time scale is constructed based on pulsar timing data obtained on the 64-m Parkes telescope (Australia) in 1995–2010. Optimal Wiener filters were applied to enhance the accuracy of the ensemble time scale. The run of the time-scale difference PTens−TT(BIPM2011) does not exceed 0.8 ± 0.4 μs over the entire studied time interval. The fractional instability of the difference PTens−TT(BIPM2011) over 15 years is σz = (0.6 ± 1.6) × 10−15, which corresponds to an upper limit for the energy density of the gravitational-wave background Ωgh2 ~ 10−10 and variations in the gravitational potential ~10−15 Hz at the frequency 2 × 10−9 Hz.
Об авторах
A. Rodin
Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Physical Institute
Автор, ответственный за переписку.
Email: rodin@prao.ru
Россия, Pushchino, Moscow oblast, 142290
V. Fedorova
Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Physical Institute; Pushchino State Natural Science Institute
Email: rodin@prao.ru
Россия, Pushchino, Moscow oblast, 142290; Pushchino, Moscow oblast
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