2021MNRAS.504.1115O

Query : 2021MNRAS.504.1115O

2021MNRAS.504.1115O - Mon. Not. R. Astron. Soc., 504, 1115-1128 (2021/June-2)

The Thousand-Pulsar-Array programme on MeerKAT - V. Scattering analysis of single-component pulsars.

OSWALD L.S., KARASTERGIOU A., POSSELT B., JOHNSTON S., BAILES M., BUCHNER S., GEYER M., KEITH M.J., KRAMER M., PARTHASARATHY A., REARDON D.J., SERYLAK M., SHANNON R.M., SPIEWAK R., VAN STRATEN W. and VENKATRAMAN KRISHNAN V.

Abstract (from CDS):

We have measured the scattering time-scale, τ, and the scattering spectral index, α, for 84 single-component pulsars. Observations were carried out with the MeerKAT telescope as part of the Thousand-Pulsar-Array programme in the MeerTime project at frequencies between 0.895 and 1.670 GHz. Our results give a distribution of values for α (defined in terms of τ and frequency ν as τ ∝ ν–α) for which, upon fitting a Gaussian, we obtain a mean and standard deviation of <α> = 4.0 ± 0.6. This is due to our identification of possible causes of inaccurate measurement of τ, which, if not filtered out of modelling results, tend to lead to underestimation of α. The pulsars in our sample have large dispersion measures and are therefore likely to be distant. We find that a model using an isotropic scatter broadening function is consistent with the data, likely due to the averaging effect of multiple scattering screens along the line of sight. Our sample of scattering parameters provides a strong data set upon which we can build to test more complex and time-dependent scattering phenomena, such as extreme scattering events.

Abstract Copyright: © The Author(s) 2021. Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): scattering - pulsars: general - ISM: structure

Simbad objects: 88

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Number of rows : 88
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 J0646+0905 Psr 06 46 31.02500 +09 05 49.6000           ~ 16 0
2 PSR J1055-6028 Psr 10 56 11.87 -60 27 12.7           ~ 48 1
3 PSR J1112-6103 Psr 11 12 14.81 -61 03 31.1           ~ 77 0
4 PSR B1112-60 Psr 11 14 22.69000 -61 00 32.1000           ~ 37 0
5 PSR J1138-6207 Psr 11 38 21.62 -62 07 59.3           ~ 26 0
6 PSR J1305-6203 Psr 13 05 20.90 -62 03 21.6           ~ 26 0
7 PSR J1316-6232 Psr 13 16 46.30 -62 32 12.2           ~ 10 0
8 PSR J1319-6105 Psr 13 19 26.32 -61 05 26.2           ~ 12 0
9 PSR J1321-3509 Psr 13 20 12.68 -35 12 26.0           ~ 26 0
10 PSR B1338-62 Psr 13 41 42.63 -62 20 20.7           ~ 152 1
11 PSR J1349-6130 Psr 13 49 36.65 -61 30 17.1           ~ 33 0
12 PSR J1406-6121 Psr 14 06 50.04 -61 21 27.9           ~ 29 0
13 PSR J1412-6145 Psr 14 12 07.69 -61 45 28.8           ~ 45 1
14 PSR J1413-6141 Psr 14 13 09.87 -61 41 13.0           ~ 44 1
15 PSR J1511-5835 Psr 15 11 07.0 -58 35 28           ~ 9 0
16 PSR B1508-57 Psr 15 12 43.13000 -58 00 00.4300           ~ 52 0
17 PSR J1514-5925 Psr 15 14 59.10 -59 25 43.3           ~ 26 0
18 PSR J1519-5734 Psr 15 19 47.59 -57 34 13.6           ~ 8 0
19 PSR J1538-5551 Psr 15 38 45.03 -55 51 36.9           ~ 22 0
20 PSR J1543-5459 Psr 15 43 56.25 -54 59 13.7           ~ 25 0
21 PSR J1551-5310 Psr 15 51 41.25 -53 10 59.6           ~ 24 0
22 PSR J1610-5006 Psr 16 10 44.30 -50 06 42.2           ~ 11 0
23 PSR J1630-4719 Psr 16 30 02.47 -47 19 42.0           ~ 10 0
24 PSR B1627-47 Psr 16 30 37.6175969280 -47 33 04.226971788           ~ 26 0
25 PSR J1632-4621 Psr 16 32 49.813 -46 21 48.60           ~ 20 0
26 PSR B1630-44 Psr 16 33 47.03000 -44 53 08.5800           ~ 30 0
27 PSR J1638-4608 Psr 16 38 22.98 -46 08 11.6           ~ 31 0
28 PSR B1636-47 Psr 16 40 13.19 -47 15 35.3           ~ 36 0
29 PSR J1640-4951 Psr 16 40 43.56 -49 51 02.1           ~ 6 0
30 PSR J1650-4341 Psr 16 50 44.63 -43 41 32.2           ~ 8 0
31 PSR J1653-4249 Psr 16 53 40.22 -42 49 03.3           ~ 18 0
32 PSR J1655-3844 Psr 16 55 38.66 -38 44 09.0           ~ 7 0
33 PSR J1700-4422 Psr 17 00 53.67 -44 22 27.0           ~ 8 0
34 PSR J1702-4128 Psr 17 02 52.52 -41 28 48.2           ~ 72 0
35 PSR B1703-40 Psr 17 07 21.78000 -40 53 55.1000           ~ 55 0
36 PSR J1715-3859 Psr 17 15 37.89 -38 59 25.1           ~ 9 0
37 PSR J1717-3737 Psr 17 17 15.96 -37 37 36.0           ~ 8 0
38 PSR B1714-34 Psr 17 17 20.30000 -34 25 00.3100           ~ 55 0
39 PSR B1715-40 Psr 17 19 01.722 -40 06 59.50           ~ 26 0
40 PSR J1720-3659 Psr 17 20 02.0050309104 -36 59 07.478417112           ~ 10 0
41 PSR B1718-35 Psr 17 21 32.76 -35 32 48.3           ~ 86 0
42 PSR J1724-3149 Psr 17 24 44.9 -31 49 04           ~ 8 0
43 PSR J1725-3546 Psr 17 25 42.2 -35 46 16           ~ 7 0
44 PSR B1727-33 Psr 17 30 32.559 -33 50 39.40           ~ 130 1
45 PSR J1731-3123 Psr 17 31 00.5 -31 23 43           ~ 7 0
46 PSR B1735-32 Psr 17 38 54.185 -32 11 53.60           ~ 42 0
47 PSR B1736-31.4 Psr 17 39 24.304 -31 31 15.30           ~ 39 0
48 PSR B1737-30.8 Psr 17 40 50.031 -30 52 04.10           ~ 55 1
49 PSR B1740-31.8 Psr 17 43 15.565 -31 53 05.30           ~ 17 0
50 PSR B1758-23 Psr 18 01 19.8149 -23 04 44.630           ~ 153 0
51 PSR B1809-17.6 Psr 18 11 55.034 -17 36 37.70           ~ 114 1
52 PSR B1809-17.3 Psr 18 12 07.208 -17 18 29.50           ~ 33 0
53 PSR B1809-17.5 Psr 18 12 15.89 -17 33 37.0           ~ 26 0
54 PSR J1816-1729 Psr 18 16 18.662 -17 29 02.70           ~ 33 0
55 SWIFT J1818.0-1607 N* 18 18 00.23 -16 07 53.0           ~ 109 0
56 PSR B1815-14 Psr 18 18 23.77000 -14 22 39.0000           ~ 61 0
57 PSR J1819-1114 Psr 18 19 28.78 -11 14 43.0           ~ 7 0
58 PSR B1817-15.1 Psr 18 19 53.691 -15 10 20.60           ~ 11 0
59 PSR B1817-13 Psr 18 20 19.759 -13 46 15.30           ~ 36 0
60 PSR B1819-14 Psr 18 22 54.042 -14 00 02.40           ~ 34 0
61 PSR B1821-11 Psr 18 24 29.538 -11 18 42.60           ~ 37 0
62 PSR J1824-1159 Psr 18 24 56.151 -11 59 53.40           ~ 8 0
63 PSR J1824-1423 Psr 18 24 57.4986292872 -14 23 04.733371824           ~ 11 0
64 PSR B1822-14 Psr 18 25 02.927 -14 46 52.60           ~ 92 0
65 PSR B1829-10 Psr 18 32 40.866 -10 21 32.78           ~ 73 0
66 PSR J1833-0559 Psr 18 33 07.60 -05 59 25.0           ~ 9 0
67 PSR J1834-0731 Psr 18 34 16.0 -07 31 07           ~ 29 0
68 PSR B1832-06 Psr 18 35 05.56 -06 43 06.9     13.18     ~ 63 0
69 PSR B1835-06.1 Psr 18 37 43.55 -06 04 49.0           ~ 77 0
70 PSR B1836-06.7 Psr 18 39 09.803 -06 43 45.20           ~ 16 0
71 PSR B1836-03.3 Psr 18 39 37.515 -03 21 10.50           ~ 20 0
72 PSR J1840-0559 Psr 18 40 23.18 -05 59 16.2           ~ 5 0
73 PSR B1838-04 Psr 18 41 05.66300 -04 25 19.5000           ~ 66 0
74 PSR B1840-01.9 Psr 18 42 57.870 -01 53 26.70           ~ 12 0
75 PSR B1841-05 Psr 18 44 05.108 -05 38 34.19           ~ 54 0
76 PSR J1844-0030 Psr 18 44 41.10 -00 30 25.8           ~ 10 0
77 PSR B1842-02 Psr 18 44 44.975 -02 44 40.90           ~ 28 0
78 PSR J1846-0749 Psr 18 46 19.74 -07 49 21.4           ~ 12 0
79 PSR J1850-0026 Psr 18 50 14.714 -00 26 11.60           ~ 23 1
80 PSR J1850-0006 Psr 18 50 47.93 -00 06 26.1           ~ 14 0
81 PSR J1852-0127 Psr 18 52 03.60 -01 27 23.4           ~ 8 0
82 PSR J1853+0545 Psr 18 53 58.418 +05 45 55.20           ~ 24 0
83 PSR J1857+0526 Psr 18 57 15.8572328808 +05 26 31.118999388           ~ 19 0
84 PSR J1857+0143 Psr 18 58 15.46 +01 36 55.4           ~ 44 0
85 PSR J1859+0601 Psr 18 59 45.76 +06 01 46.1           ~ 9 0
86 PSR B1911+11.6 Psr 19 13 43.88 +11 45 33.1           ~ 15 0
87 PSR J1916+0844 Psr 19 16 19.08 +08 44 07.0           ~ 15 0
88 PSR J1928+1923 Psr 19 28 05.163 +19 23 31.32           ~ 8 0

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