2023MNRAS.520.3847C

Query : 2023MNRAS.520.3847C

2023MNRAS.520.3847C - Mon. Not. R. Astron. Soc., 520, 3847-3856 (2023/April-2)

MeerKAT discovery of 13 new pulsars in Omega Centauri.

CHEN W., FREIRE P.C.C., RIDOLFI A., BARR E.D., STAPPERS B., KRAMER M., POSSENTI A., RANSOM S.M., LEVIN L., BRETON R.P., BURGAY M., CAMILO F., BUCHNER S., CHAMPION D.J., ABBATE F., VENKATRAMAN KRISHNAN V., PADMANABH P.V., GAUTAM T., VLEESCHOWER L., GEYER M., GRIESSMEIER J.-M., MEN Y.P., BALAKRISHNAN V. and BEZUIDENHOUT M.C.

Abstract (from CDS):

The most massive globular cluster in our Galaxy, Omega Centauri, is an interesting target for pulsar searches, because of its multiple stellar populations and the intriguing possibility that it was once the nucleus of a galaxy that was absorbed into the Milky Way. The recent discoveries of pulsars in this globular cluster and their association with known X-ray sources was a hint that, given the large number of known X-ray sources, there is a much larger undiscovered pulsar population. We used the superior sensitivity of the MeerKAT radio telescope to search for pulsars in Omega Centauri. In this paper, we present some of the first results of this survey, including the discovery of 13 new pulsars; the total number of known pulsars in this cluster currently stands at 18. At least half of them are in binary systems and preliminary orbital constraints suggest that most of the binaries have light companions. We also discuss the ratio between isolated and binaries pulsars, and how they were formed in this cluster.

Abstract Copyright: © 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): Pulsar - Globular cluster - Binary

Simbad objects: 36

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Number of rows : 36
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 PSR J0024-7201X Psr 00 24 22.38565 -72 01 17.4414           ~ 15 0
3 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
4 PSR J1312+1810 Psr 13 12 55 +18 10.0           ~ 44 1
5 M 53 GlC 13 12 55.25 +18 10 05.4     7.79     ~ 907 0
6 PSR J1326-4728I Psr 13 26 29.0 -47 30 24           ~ 3 0
7 PSR J1326-4728D Psr 13 26 32.7130 -47 28 40.053           ~ 5 0
8 PSR J1326-4728Q Psr 13 26 35.0 -47 27 54           ~ 2 0
9 PSR J1326-4728G Psr 13 26 37.1 -47 29 41           ~ 2 0
10 PSR J1326-4728K Psr 13 26 38.1 -47 27 39           ~ 2 0
11 PSR J1326-4728A Psr 13 26 39.670 -47 30 11.64           ~ 7 0
12 PSR J1326-4728E Psr 13 26 42.67844 -47 27 23.9990           ~ 5 0
13 PSR J1326-4728H Psr 13 26 44.0 -47 28 55           ~ 2 0
14 PSR J1326-4728P Psr 13 26 45.0 -47 29 42           ~ 2 0
15 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
16 PSR J1326-4728O Psr 13 26 48.0 -47 27 19           ~ 2 0
17 PSR J1326-4728B Psr 13 26 49.563 -47 29 24.62           ~ 10 0
18 PSR J1326-4728N Psr 13 26 49.8 -47 31 25           ~ 2 0
19 PSR J1326-4728J Psr 13 26 51.7 -47 27 09           ~ 3 0
20 PSR J1326-4728F Psr 13 26 53.0 -47 28 28           ~ 2 0
21 PSR J1326-4728C Psr 13 26 55.2219 -47 30 11.753           ~ 5 0
22 PSR J1326-4728M Psr 13 26 59.0 -47 30 09           ~ 2 0
23 PSR J1326-4728L Psr 13 27 02.8 -47 26 49           ~ 2 0
24 PSR J1326-4728R Psr 13 27 10.0 -47 29 02           ~ 2 0
25 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
26 ESO 455-23 GlC 17 35 47.80 -30 28 11.0           ~ 285 0
27 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
28 NGC 6440 GlC 17 48 52.67 -20 21 34.5           ~ 592 0
29 NGC 6441 GlC 17 50 13.06 -37 03 05.2           ~ 940 0
30 NGC 6517 GlC 18 01 50.376 -08 57 34.39   11.08       ~ 215 0
31 NGC 6522 GlC 18 03 34.08 -30 02 02.3           ~ 569 0
32 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 939 1
33 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
34 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
35 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
36 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0

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