2025RAA....25c5022C

Query : 2025RAA....25c5022C

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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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PSR J1713+0747 Psr 17 13 49.5367813 +07 47 37.450240           ~ 530 1

Query : 2025RAA....25c5022C

Basic data :
PSR J1713+0747 -- Pulsar
Other object types: otypes_help 		gam (1FGL,2FGL,...), Psr (2022ApJS,PSR)
ICRS coord. (ep=J2000) : 		17 13 49.5367813 +07 47 37.450240 (Radio) [ 0.01783 0.04 90 ] B 2024MNRAS.530..287S
FK4 coord. (ep=B1950 eq=1950) : 		17 11 24.7239334 +07 51 03.350489 [ 0.01783 0.04 90 ]
Gal coord. (ep=J2000) : 		028.7505531263 +25.2228203646 [ 0.01783 0.04 90 ]
Proper motions mas/yr : 		4.9215 -3.920 [0.0008 0.002 90] C 2023A&A...678A..48E
Parallaxes (mas): 		0.88 [0.1] C 2024MNRAS.530..287S
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Identifiers (9) :
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PSR J1713+0447 3FGL J1714.0+0748 PSR J1713+0747
1FGL J1713.9+0750 4FGL J1713.8+0747 PSR J1713+07
2FGL J1714.0+0751 FL8Y J1713.9+0746 PSR B1711+07

References (530 between 1850 and 2026) (Total 530)
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Distance : 2    Plx : 1    PM : 2   

   

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