2025MNRAS.540.3709U

Query : 2025MNRAS.540.3709U

2025MNRAS.540.3709U - Mon. Not. R. Astron. Soc., 540, 3709-3724 (2025/July-2)

Do they repeat? Monitoring 36 non-repeating FRBs with FAST.

UNO Y., HASHIMOTO T., GOTO T., HISANO S., WONG Y.H.V., CHEN A., EIE S., HO S.C.-C., CHIBUEZE J.O., LIN Y.-W., KIM S.J., HSU T.-Y., WANG P., WANG P. and AZNAM M.

Abstract (from CDS):

The origin of fast radio bursts (FRBs), highly energetic millisecond-duration radio pulses originating from beyond our Galaxy, remains unknown. Observationally, FRBs are classified as non-repeating or repeating; however, this classification is complicated by limited observing time and sensitivity constraints, which may result in some repeating FRBs being misidentified as non-repeating. To address this issue, we adopt both empirical and machine-learning techniques from previous studies to identify candidates that may have been misclassified. We conducted follow-up observations of 36 such candidates, each observed for 10 min using the Five-hundred-meter Aperture Spherical Telescope (FAST). No radio bursts exceeding a signal-to-noise ratio of 7 were detected, with a typical 7$\sigma$ fluence limit of $\sim$0.013 Jy ms. We constrain the repetition rates of these sources using two statistical models of FRB occurrence. Combining our FAST non-detections with prior observations, we derive upper limits on the repetition rates of $\sim 10^{-2.6}$-$10^{-0.22}$ h$^{-1}$ under a Poisson process, and $\sim 10^{-2.3}$-$10^{-0.25}$ h$^{-1}$ under a Weibull process. This work presents one of the most stringent upper limits on FRB repetition rates to date, based on a sample size five times larger than those used in previous studies.

Abstract Copyright: © 2025 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): radio continuum: transients - fast radio bursts

Simbad objects: 38

goto Full paper

goto View the references in ADS

Number of rows : 38
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 FRB 20190102A rB 00 37 02.4000 +26 43 12.000           ~ 15 0
2 FRB 20190226C rB 01 09 50.4000 +26 45 36.000           ~ 10 0
3 FRB 20190601B rB 01 11 31.2000 +23 49 12.000           ~ 11 0
4 FRB 20190605D rB 01 46 52.8000 +28 37 12.000           ~ 9 0
5 FRB 20181231A rB 01 58 50.4000 +20 57 36.000           ~ 9 0
6 FRB 20181203A rB 02 14 24.0000 +23 34 12.000           ~ 7 0
7 FRB 20190118B rB 02 38 50.4000 +23 34 12.000           ~ 7 0
8 FRB 20190129A rB 03 00 14.4000 +21 25 12.000           ~ 12 0
9 FRB 171213 rB 03 39.0 -10 56           ~ 18 0
10 FRB 20201124A rB 05 07 57.600 +26 11 24.00           ~ 307 0
11 FRB 20181119D rB 05 31 58.6980 +33 08 52.588           ~ 933 0
12 FRB 20190604G rB 08 03 14.4000 +59 30 00.000           ~ 11 0
13 FRB 160410 rB 08 41 25.0 +06 05 05           ~ 18 0
14 FRB 20190221A rB 08 50 24.0000 +09 54 00.000           ~ 10 0
15 FRB 151230 rB 09 40 50.0 -03 27 05           ~ 31 0
16 FRB 20190428A rB 11 22 55.2000 +23 19 48.000           ~ 9 0
17 FRB 20181223B rB 11 39 33.6000 +21 35 24.000           ~ 10 0
18 FRB 20190228A rB 12 13 55.2000 +22 54 00.000           ~ 11 0
19 FRB 130729 rB 13 41 21.0 -05 59 43           ~ 46 0
20 FRB 180212 rB 14 21.0 -03 35           ~ 16 0
21 FRB 20181128D rB 14 22 28.8000 +59 55 48.000           ~ 6 0
22 FRB 20190111A rB 14 28 00.0000 +26 46 48.000           ~ 10 0
23 FRB 20190125B rB 14 29 48.0 +49 37 54           ~ 11 0
24 FRB 20181022E rB 14 44 43.2000 +27 07 48.000           ~ 10 0
25 FRB 20190304C rB 14 52 02.4000 +26 43 12.000           ~ 9 0
26 FRB 20180915B rB 15 00 55.2000 +25 01 12.000           ~ 7 0
27 FRB 20181221A rB 15 22 19.2000 +25 51 36.000           ~ 17 0
28 FRB 20181127A rB 16 15 12.0000 +25 25 48.000           ~ 9 0
29 FRB 20190110C rB 16 27 55.2000 +41 25 12.000           ~ 36 0
30 FRB 20181228B rB 16 41 43.2000 +63 51 00.000           ~ 14 0
31 FRB 20181214F rB 16 50 28.8000 +32 26 24.000           ~ 9 0
32 FRB 20190118A rB 16 53 14.4000 +11 33 00.000           ~ 12 0
33 FRB 20181215B rB 16 59 14.4000 +47 33 36.000           ~ 9 0
34 FRB 20190425A rB 17 02 41.0 +21 34 34           ~ 47 0
35 NAME FRB J1852-08 rB 18 52 05.0 -08 29 35           ~ 54 0
36 FRB 110523 rB 21 45 31.0 -00 15 23           ~ 91 0
37 FRB 110703 rB 23 30 51.0 -02 52 24           ~ 54 0
38 FRB 20190131B rB 23 38 52.8000 +11 42 36.000           ~ 7 0

To bookmark this query, right click on this link: simbad:objects in 2025MNRAS.540.3709U and select 'bookmark this link' or equivalent in the popup menu