SIMBAD references

2025RAA....25c5022C - Research in Astron. and astroph., 25, part no 3, 5022 (2025/March-0)

Chinese Pulsar Timing Array Upper Limits on Microhertz Gravitational Waves from Supermassive Black-hole Binaries Using PSR J1713+0747 FAST Data.

CABALLERO R.N., XU H., LEE K., CHEN S., GUO Y., JIANG J., WANG B., XU J. and XUE Z.

Abstract (from CDS):

We derive the gravitational-wave (GW) strain upper limits from resolvable supermassive black-hole binaries using the data from the Five-hundred-meter Aperture Spherical radio Telescope, in the context of the Chinese Pulsar Timing Array project. We focus on circular orbits in the μHz GW frequency band between 10–7 and 3 × 10–6 Hz. This frequency band is higher than the traditional pulsar timing array band and is less explored. We used the data of the millisecond pulsar PSR J1713+5307 observed between 2019 August and 2021 April. A dense observation campaign was carried out in 2020 September to allow for the μHz band coverage. Our sky-averaged continuous source upper limit at the 95% confidence level at 1 μHz is 1.26 × 10–12, while the same limit in the direction of the pulsar is 4.77 × 10–13.

Abstract Copyright: © 2025. National Astronomical Observatories, CAS and IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.

Journal keyword(s): (stars:) pulsars: general - gravitational waves - methods: statistical - methods: observational - methods: data analysis

Simbad objects: 1

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