2020MNRAS.494.2012P

Query : 2020MNRAS.494.2012P

2020MNRAS.494.2012P - Mon. Not. R. Astron. Soc., 494, 2012-2026 (2020/May-2)

Timing of young radio pulsars - II. Braking indices and their interpretation.

PARTHASARATHY A., JOHNSTON S., SHANNON R.M., LENTATI L., BAILES M., DAI S., KERR M., MANCHESTER R.N., OSLOWSKI S., SOBEY C., VAN STRATEN W. and WELTEVREDE P.

Abstract (from CDS):

In Paper I of this series, we detected a significant value of the braking index (n) for 19 young, high-{dot}E radio pulsars using ∼10 yr of timing observations from the 64-m Parkes radio telescope. Here, we investigate this result in more detail using a Bayesian pulsar timing framework to model timing noise and to perform selection to distinguish between models containing exponential glitch recovery and braking index signatures. We show that consistent values of n are maintained with the addition of substantial archival data, even in the presence of glitches. We provide strong arguments that our measurements are unlikely due to exponential recovery signals from unseen glitches even though glitches play a key role in the evolution of a pulsar's spin frequency. We conclude that, at least over decadal time-scales, the value of n can be significantly larger than the canonical 3 and discuss the implications for the evolution of pulsars.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: data analysis - stars: neutron - pulsars: general

Simbad objects: 91

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Number of rows : 91
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 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
2 PSR J0537-6910 Psr 05 37 46.66 -69 10 17.1           ~ 309 1
3 PSR B0540-69 Psr 05 40 11.2000490438 -69 19 54.198559829           ~ 976 3
4 PSR B0540+23 Psr 05 43 09.65 +23 29 06.1     14.40     ~ 278 0
5 PSR B0744-53 Psr 07 45 02.3 -53 51 22           ~ 58 0
6 PSR J0820-3826 Psr 08 20 59.932 -38 26 42.88           ~ 17 0
7 PSR J0834-4159 Psr 08 34 16.3 -41 59 51           ~ 34 0
8 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2446 1
9 PSR J0857-4424 Psr 08 57 55.8823806144 -44 24 10.616717376           ~ 39 0
10 PSR J0905-5127 Psr 09 05 51.922 -51 27 48.71           ~ 51 0
11 PSR J0954-5430 Psr 09 54 06.04 -54 30 53.5           ~ 34 0
12 PSR J1016-5819 Psr 10 16 12.100 -58 19 01.15           ~ 27 0
13 PSR J1020-6026 Psr 10 20 11.40 -60 26 06.8           ~ 20 0
14 PSR J1043-6116 Psr 10 43 55.22200 -61 16 51.2900           ~ 32 0
15 PSR J1115-6052 Psr 11 15 53.68 -60 52 17.8           ~ 26 0
16 PSR J1123-6256 Psr 11 23 55.53000 -62 59 10.9200           ~ 39 0
17 PSR J1156-5707 Psr 11 56 07.45 -57 07 01.9           ~ 22 0
18 PSR J1216-6223 Psr 12 16 41.89 -62 23 57.8           ~ 17 0
19 PSR B1221-63 Psr 12 24 22.2740 -64 07 53.834           ~ 122 0
20 PSR J1305-6203 Psr 13 05 20.90 -62 03 21.6           ~ 26 0
21 PSR J1349-6130 Psr 13 49 36.65 -61 30 17.1           ~ 33 0
22 PSR J1412-6145 Psr 14 12 07.69 -61 45 28.8           ~ 45 1
23 PSR J1452-5851 Psr 14 52 52.58 -58 51 13.3           ~ 21 0
24 PSR B1449-64 Psr 14 53 32.6546 -64 13 16.047           ~ 158 0
25 PSR J1509-5850 Psr 15 09 27.153 -58 50 56.05           ~ 131 0
26 PSR B1508-57 Psr 15 12 43.13000 -58 00 00.4300           ~ 52 0
27 PSR B1509-58 Psr 15 13 47.6 -59 07 54     13.06     ~ 879 1
28 PSR J1514-5925 Psr 15 14 59.10 -59 25 43.3           ~ 26 0
29 PSR J1515-5720 Psr 15 15 09.3 -57 20 49           ~ 19 0
30 PSR J1524-5706 Psr 15 24 21.43 -57 06 35.0           ~ 28 0
31 PSR J1530-5327 Psr 15 30 26.87 -53 27 56.3           ~ 32 0
32 PSR J1531-5610 Psr 15 31 27.91 -56 10 55.0           ~ 59 0
33 PSR J1538-5551 Psr 15 38 45.03 -55 51 36.9           ~ 22 0
34 PSR B1535-56 Psr 15 39 14.07000 -56 26 26.2000           ~ 64 0
35 PSR J1543-5459 Psr 15 43 56.25 -54 59 13.7           ~ 25 0
36 PSR J1548-5607 Psr 15 48 43.8746461512 -56 07 35.458209840           ~ 30 0
37 PSR J1549-4848 Psr 15 49 21.02700 -48 48 36.1000           ~ 55 0
38 PSR J1551-5310 Psr 15 51 41.25 -53 10 59.6           ~ 24 0
39 PSR B1556-57 Psr 16 00 19.93 -57 51 14.7           ~ 45 0
40 PSR J1601-5335 Psr 16 01 54.91 -53 35 43.2           ~ 25 0
41 PSR B1607-52 Psr 16 11 03.20 -52 09 23.6           ~ 48 0
42 PSR J1632-4757 Psr 16 32 16.7704844928 -47 57 33.931138860           ~ 29 0
43 PSR J1632-48 Psr 16 32 39.94 -48 18 52.8           ~ 36 0
44 PSR J1637-4642 Psr 16 37 13.77 -46 42 15.0           ~ 40 0
45 PSR B1634-45 Psr 16 37 58.710 -45 53 27.30           ~ 60 0
46 PSR J1638-4608 Psr 16 38 22.98 -46 08 11.6           ~ 31 0
47 PSR J1638-4417 Psr 16 38 46.22 -44 17 03.6           ~ 22 0
48 PSR B1636-47 Psr 16 40 13.19 -47 15 35.3           ~ 36 0
49 PSR J1640-4631 Psr 16 40 43.52 -46 31 35.4           ~ 65 0
50 PSR J1643-4505 Psr 16 43 36.97 -45 05 46.0           ~ 22 0
51 PSR J1648-4611 Psr 16 48 22.02 -46 11 16.0           ~ 73 0
52 PSR J1649-4653 Psr 16 49 24.5 -46 53 09           ~ 26 0
53 PSR J1650-4921 Psr 16 50 35.100 -49 21 03.88           ~ 21 0
54 PSR J1702-4305 Psr 17 02 27.290 -43 06 44.00           ~ 18 1
55 PSR J1715-3903 Psr 17 15 14.3 -39 03 02           ~ 28 0
56 PSR B1719-37 Psr 17 22 59.17000 -37 12 03.0000           ~ 107 0
57 PSR J1723-3659 Psr 17 23 07.580 -36 59 13.90           ~ 45 0
58 PSR B1730-37 Psr 17 33 26.754 -37 16 54.60           ~ 54 0
59 PSR B1731-33.5 Psr 17 34 26.6 -33 33 22           ~ 104 1
60 PSR B1732-32.9 Psr 17 35 56.9 -32 58 19           ~ 18 0
61 PSR B1735-29.8 Psr 17 38 52.24 -29 55 51.0           ~ 23 0
62 PSR B1736-29 Psr 17 39 34.28500 -29 03 03.9600           ~ 86 0
63 PSR J1739-3023 Psr 17 39 39.85 -30 23 11.2           ~ 54 0
64 PSR B1742-30 Psr 17 45 56.30810 -30 40 23.3000           ~ 182 0
65 PSR J1801-2154 Psr 18 01 08.3 -21 54 32           ~ 18 0
66 PSR J1806-2124 Psr 18 06 19.59 -21 25 40.0           ~ 42 0
67 PSR J1809-1917 Psr 18 09 43.147 -19 17 38.10           ~ 128 1
68 PSR J1815-1738 Psr 18 15 14.67 -17 38 03.0           ~ 28 0
69 PSR J1820-1529 Psr 18 20 40.8 -15 29 50           ~ 20 0
70 PSR B1821-19 Psr 18 24 00.43600 -19 45 44.5000           ~ 101 0
71 PSR B1822-14 Psr 18 25 02.927 -14 46 52.60           ~ 92 0
72 PSR J1828-1101 Psr 18 28 18.849 -11 01 50.90           ~ 63 0
73 PSR J1828-1057 Psr 18 28 33.2 -10 57 26           ~ 22 0
74 PSR B1828-10 Psr 18 30 47.566 -10 59 27.90           ~ 190 1
75 PSR B1829-08 Psr 18 32 37.01300 -08 27 03.1600           ~ 79 0
76 PSR B1830-08 Psr 18 33 40.24500 -08 27 30.9000           ~ 155 1
77 PSR J1834-0731 Psr 18 34 16.0 -07 31 07           ~ 29 0
78 SNR G023.3-00.3 SNR 18 34 51.80 -08 44 38.2           ~ 240 0
79 PSR J1835-1106 Psr 18 35 18.287 -11 06 15.10           ~ 75 0
80 PSR J1835-0944 Psr 18 35 46.7 -09 44 29           ~ 22 0
81 PSR J1837-0559 Psr 18 37 23.663 -05 59 28.30           ~ 30 0
82 PSR B1835-04.9 Psr 18 38 11.19 -04 53 23.0           ~ 32 0
83 PSR J1838-0549 Psr 18 38 38.1 -05 49 12           ~ 32 0
84 PSR B1836-03.3 Psr 18 39 37.515 -03 21 10.50           ~ 20 0
85 PSR J1839-0905 Psr 18 39 53.4698607744 -09 05 14.177174460           ~ 22 0
86 PSR J1842-0905 Psr 18 42 22.138 -09 05 24.60           ~ 29 0
87 PSR J1843-0702 Psr 18 43 22.44 -07 02 54.6           ~ 29 0
88 PSR B1841-05 Psr 18 44 05.108 -05 38 34.19           ~ 54 0
89 PSR J1845-0743 Psr 18 45 57.17630 -07 43 38.1600           ~ 38 0
90 PSR J1853-0004 Psr 18 53 23.02 -00 04 32.3           ~ 46 0
91 PSR J1853+0011 Psr 18 53 29.97 +00 11 29.7           ~ 17 0

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