2023MNRAS.518.1642A

Query : 2023MNRAS.518.1642A

2023MNRAS.518.1642A - Mon. Not. R. Astron. Soc., 518, 1642-1655 (2023/January-2)

A MeerKAT look at the polarization of 47 Tucanae pulsars: magnetic field implications.

ABBATE F., POSSENTI A., RIDOLFI A., VENKATRAMAN KRISHNAN V., BUCHNER S., BARR E.D., BAILES M., KRAMER M., CAMERON A., PARTHASARATHY A., VAN STRATEN W., CHEN W., CAMILO F., PADMANABH P.V., MAO S.A., FREIRE P.C.C., RANSOM S.M., VLEESCHOWER L., GEYER M. and ZHANG L.

Abstract (from CDS):

We present the polarization profiles of 22 pulsars in the globular cluster 47 Tucanae using observations from the MeerKAT radio telescope at UHF band (544-1088 MHz) and report precise values of dispersion measure (DM) and rotation measure (RM). We use these measurements to investigate the presence of turbulence in electron density and magnetic fields. The structure function of DM shows a break at ∼30 arcsec (∼0.6 pc at the distance of 47 Tucanae) that suggests the presence of turbulence in the gas in the cluster driven by the motion of wind-shedding stars. On the other hand, the structure function of RM does not show evidence of a break. This non-detection could be explained either by the limited number of pulsars or by the effects of the intervening gas in the Galaxy along the line of sight. Future pulsar discoveries in the cluster could help confirm the presence and localize the turbulence.

Abstract Copyright: © 2022 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): (Galaxy:) globular clusters: individual: 47 Tucanae - magnetic fields - polarization

Simbad objects: 28

goto Full paper

goto View the references in ADS

Number of rows : 28
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 J0024-7204C Psr 00 23 50.371 -72 04 31.44           ~ 65 1
2 PSR J0024-7204M Psr 00 23 54.489 -72 05 30.83           ~ 41 1
3 PSR J0023-7203J Psr 00 23 59.40735 -72 03 58.7914           ~ 91 1
4 PSR J0024-7204Y Psr 00 24 01.4016 -72 04 41.837           ~ 28 1
5 PSR J0024-72L Psr 00 24 03.754 -72 04 56.87           ~ 42 1
6 PSR J0024-72F Psr 00 24 03.907 -72 04 42.47           ~ 54 1
7 PSR J0023-72S Psr 00 24 03.9779 -72 04 42.342           ~ 37 1
8 PSR J0023-72O Psr 00 24 04.637 -72 04 53.71           ~ 66 1
9 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
10 PSR J0024-7204R Psr 00 24 05.670 -72 04 52.62           ~ 52 1
11 PSR B0021-72W Psr 00 24 06.0580 -72 04 49.088           ~ 87 1
12 PSR J0024-72H Psr 00 24 06.686 -72 04 06.74           ~ 64 1
13 PSR J0024-7204aa Psr 00 24 07.27830 -72 05 19.5212           ~ 16 0
14 PSR B0021-72I Psr 00 24 07.9330 -72 04 39.669           ~ 68 1
15 PSR J0024-72G Psr 00 24 07.943 -72 04 39.65           ~ 47 1
16 PSR J0024-7204ab Psr 00 24 08.1657 -72 04 47.616           ~ 13 0
17 PSR B0021-72T Psr 00 24 08.54 -72 04 38.9           ~ 48 1
18 PSR B0021-72N Psr 00 24 09.193 -72 04 28.83           ~ 40 1
19 PSR J0023-72U Psr 00 24 09.8325 -72 03 59.667           ~ 64 2
20 PSR J0024-7204E Psr 00 24 11.125 -72 05 20.14           ~ 66 1
21 PSR J0024-72D Psr 00 24 13.818 -72 04 43.83           ~ 62 1
22 PSR J0023-72Q Psr 00 24 16.482 -72 04 25.15           ~ 44 1
23 PSR J0024-7201X Psr 00 24 22.38565 -72 01 17.4414           ~ 15 0
24 ICRF J040820.3-654509 Sy2 04 08 20.37884 -65 45 09.0806     18.0     ~ 207 1
25 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
26 ICRF J082526.8-501038 QSO 08 25 26.8673494560 -50 10 38.484054768   20.94       ~ 139 1
27 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
28 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2

To bookmark this query, right click on this link: simbad:objects in 2023MNRAS.518.1642A and select 'bookmark this link' or equivalent in the popup menu