2025MNRAS.537.1070T


Query : 2025MNRAS.537.1070T

2025MNRAS.537.1070T - Mon. Not. R. Astron. Soc., 537, 1070-1092 (2025/February-3)

Discovery of 26 new Galactic radio transients by MeerTRAP.

TURNER J.D., STAPPERS B.W., TIAN J., BEZUIDENHOUT M.C., CALEB M., DRIESSEN L.N., JANKOWSKI F., PASTOR-MARAZUELA I., RAJWADE K.M., SURNIS M., KRAMER M., BARR E.D. and BEREZINA M.

Abstract (from CDS):

Radio searches for single pulses provide the opportunity to discover one-off events, fast transients, and some pulsars that might otherwise be missed by conventional periodicity searches. The MeerTRAP real-time search pipeline operates commensally to observations with the MeerKAT telescope. Here, we report on 26 new Galactic radio transients, mostly rotating radio transients (RRATs) and also the detection of one RRAT and two pulsars that were independently discovered by other surveys. The dispersion measures of two of the new sources marginally exceed the Galactic contribution depending on the electron density model used. Using a simple method of fitting a Gaussian function to individual pulses, and obtaining positions of arcsec accuracy from image-based localizations using channelized voltage data from our transient buffer, we have derived timing solutions spanning multiple years for five sources. The timing parameters imply ages of several Myr and low surface magnetic field strengths which is characteristic of RRATs. We were able to measure spin periods for eight more transients, including one source which appears to rotate every 17.5 s. A majority of the sources have only been seen in one observation, sometimes despite multiple return visits to the field. Some sources exhibit complex emission features like component switching and periodic microstructure.

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

Journal keyword(s): stars: neutron - pulsars: general - radio continuum: transients

Simbad objects: 32

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Number of rows : 32
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 J0250+5854 Psr 02 50 17.78 +58 54 01.3           ~ 51 0
2 FRB 20201124A rB 05 07 57.600 +26 11 24.00           ~ 307 0
3 FRB 20181119D rB 05 31 58.6980 +33 08 52.588           ~ 933 0
4 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
5 PSR J0901-4046 Psr 09 01 29.2490 -40 46 02.984           ~ 48 0
6 PSR J0917-4413 Psr 09 17 52.40900 -44 13 20.4000           ~ 2 0
7 NAME Vela Supercluster SCG 10 53.0 +02 44           ~ 54 0
8 HD 96670 HXB 11 07 13.9342973568 -59 52 23.180506824 6.86 7.60 7.43 8.38   O7V(f)n 109 1
9 PSR J1244-6359 Psr 12 44 47.693 -63 59 47.40           ~ 11 0
10 PSR J1530-2114 Psr 15 30 43.00 -21 14 21.0           ~ 2 0
11 LEDA 3097177 G 15 32 43.1 -56 07 30           ~ 8 0
12 PSR J1540-5821 Psr 15 40 10.600 -58 21 55.50           ~ 2 0
13 PSR J1554-4854 Psr 15 54 42.68 -48 54 01.5           ~ 2 0
14 PSR B1557-50 Psr 16 00 53.0150 -50 44 21.300           ~ 119 0
15 PSR J1621-5039 Psr 16 21 04.71 -50 39 48.6           ~ 7 0
16 GLEAM-X J162759.5-523504 Psr 16 27 59.50 -52 35 04.3           ~ 51 0
17 PSR J1649-4230 Psr 16 49 46.640 -42 30 21.30           ~ 2 0
18 PSR J1650-5025 Psr 16 50 00.18350 -50 26 03.0000           ~ 2 0
19 PSR J1727-2946 Psr 17 27 15.09493 -29 46 36.7970           ~ 19 0
20 PSR B1804-12 Psr 18 06 06.791 -11 54 28.70           ~ 25 0
21 SAX J1808.4-3658 LXB 18 08 27.58 -36 58 43.9           ~ 1051 0
22 AX J1809.8-1943 Psr 18 09 51.07 -19 43 51.8           ~ 532 0
23 PSR J1819-1458 Psr 18 19 34.173 -14 58 03.57           ~ 136 0
24 [HRM2023] GPM J1839-10 Psr 18 39 02.000 -10 31 49.37           ~ 35 0
25 QSO B1908-202 Bla 19 11 09.65289294 -20 06 55.1090664   18.21   18.14   ~ 306 1
26 PSR J1930-1852 Psr 19 30 29.7156 -18 51 46.270           ~ 54 0
27 NAME ASKAP J193505.1+214841.0 Psr 19 35 05.1260 +21 48 41.047           ~ 22 0
28 FRB 20240114A rB 21 27 39.8350 +04 19 45.634           ~ 66 0
29 NVSS J221811+282849 Rad 22 18 11.25 +28 28 53.1           ~ 4 1
30 [RRB2014] RM J221826.6+290308.6 ClG 22 18 26.6308 +29 03 08.648           ~ 2 0
31 PSR J2222+2923 Psr 22 23 03.224 +29 23 58.65           ~ 14 0
32 PSR J2237+2828 Psr 22 37 29.41 +28 28 40.0           ~ 3 0

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