2023MNRAS.522.6258B

Query : 2023MNRAS.522.6258B

2023MNRAS.522.6258B - Mon. Not. R. Astron. Soc., 522, 6258-6263 (2023/July-2)

Imprint of magnetic obliquity in apparent spin-down of radio pulsars.

BIRYUKOV A. and BESKIN G.

Abstract (from CDS):

Numerical simulations predict that the spin-down rate of a single rotation-powered neutron star depends on the angle α between its spin and magnetic axes as $P\dot{P} \propto \mu ^2 (k_0 + k_1\sin ^2\alpha)$, where P is the star spin period, μ is its magnetic moment, while k0 ∼ k1 ∼ 1. Here, we describe a simple observational test for this prediction based on the comparison of spin-down rates of 50 nearly orthogonal (with α close to 90 deg) and 27 nearly aligned (with α close to 0 deg) pulsars. We found, that the apparent pulsar spin-down is consistent with the theory if assumed, that magnetic moments of orthogonal rotators are systematically larger than those of aligned ones for ∼0.15...0.2 dex. Also, as a by-product of the analysis, we provide yet another constraint on the average braking index of radio pulsars as 1 ≤ n ≤ 4 with formal significance not worse than 99 per cent.

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

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

Simbad objects: 76

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Number of rows : 76
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 B0149-16 Psr 01 52 10.85400 -16 37 53.6300           ~ 130 0
2 PSR B0154+61 Psr 01 57 49.9434 +62 12 26.648           ~ 127 0
3 PSR B0402+61 Psr 04 06 30.0806 +61 38 41.408           ~ 90 1
4 PSR B0458+46 Psr 05 02 04.561 +46 54 06.09           ~ 96 0
5 PSR B0523+11 Psr 05 25 56.49800 +11 15 18.8000           ~ 125 1
6 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
7 PSR J0627+0706 Psr 06 27 44.17200 +07 06 33.0000           ~ 33 0
8 PSR B0656+14 Psr 06 59 48.18800 +14 14 19.2000   24.85 24.90     ~ 943 1
9 PSR B0818-13 Psr 08 20 26.40700 -13 50 56.3200           ~ 229 0
10 PSR B0823+26 Psr 08 26 51.5068 +26 37 21.297           ~ 541 1
11 PSR B0826-34 Psr 08 28 16.6 -34 17 07           ~ 167 0
12 PSR J0831-4406 Psr 08 31 32.43 -44 06 11.9           ~ 16 0
13 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2446 1
14 PSR B0840-48 Psr 08 42 05.44430 -48 51 20.6000           ~ 47 0
15 PSR J0905-5127 Psr 09 05 51.922 -51 27 48.71           ~ 51 0
16 PSR B0906-49 Psr 09 08 35.46000 -49 13 05.0000           ~ 168 0
17 PSR B0943+10 Psr 09 46 07.31 +09 51 57.3           ~ 364 1
18 PSR B0950+08 Psr 09 53 09.31210 +07 55 36.9000           ~ 806 2
19 PSR B1055-52 Psr 10 57 59.0450 -52 26 56.330           ~ 757 0
20 PSR B1124-60 Psr 11 26 52.608 -60 54 39.96           ~ 27 0
21 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 852 0
22 PSR B1409-62 Psr 14 13 31.32000 -63 07 34.6000           ~ 38 0
23 PSR J1424-6438 Psr 14 24 59.20 -64 38 10.0           ~ 8 0
24 PSR B1508+55 Psr 15 09 25.674 +55 31 32.90           ~ 322 1
25 PSR B1541+09 Psr 15 43 38.82000 +09 29 16.4000           ~ 215 1
26 PSR J1549-4848 Psr 15 49 21.02700 -48 48 36.1000           ~ 55 0
27 PSR B1607-52 Psr 16 11 03.20 -52 09 23.6           ~ 48 0
28 PSR J1613-5234 Psr 16 13 57.49 -52 34 17.0           ~ 7 0
29 PSR J1637-4450 Psr 16 37 53.15 -44 50 26.3           ~ 13 0
30 PSR B1634-45 Psr 16 37 58.710 -45 53 27.30           ~ 60 0
31 PSR B1642-03 Psr 16 45 02.0330 -03 17 57.200           ~ 394 0
32 PSR B1648-17 Psr 16 51 31.75 -17 09 22.0           ~ 45 0
33 PSR B1702-19 Psr 17 05 36.09300 -19 06 39.2000           ~ 191 1
34 PSR J1713-3945 Psr 17 13 02.4438883512 -38 44 29.816068236           ~ 20 0
35 PSR B1718-02 Psr 17 20 57.269 -02 12 23.90           ~ 57 0
36 PSR B1718-32 Psr 17 22 02.96410 -32 07 45.0700           ~ 101 0
37 PSR B1719-37 Psr 17 22 59.17000 -37 12 03.0000           ~ 107 0
38 PSR B1727-47 Psr 17 31 42.21000 -47 44 38.7000           ~ 166 0
39 PSR B1736-29 Psr 17 39 34.28500 -29 03 03.9600           ~ 86 0
40 PSR B1745-12 Psr 17 48 17.4310 -13 00 53.400           ~ 68 0
41 PSR B1747-46 Psr 17 51 42.18500 -46 57 26.7200           ~ 124 0
42 PSR B1803-19.3 Psr 18 06 06.6 -19 20 23           ~ 13 0
43 PSR J1808-1726 Psr 18 08 42.3 -17 26 27           ~ 9 0
44 PSR B1811+40 Psr 18 13 13.281 +40 13 39.03           ~ 67 0
45 PSR B1818-04 Psr 18 20 52.5920 -04 27 37.120           ~ 230 0
46 PSR J1828-1101 Psr 18 28 18.849 -11 01 50.90           ~ 63 0
47 PSR B1831-04 Psr 18 34 25.62100 -04 26 15.7000           ~ 103 0
48 PSR B1839+09 Psr 18 41 55.92100 +09 12 07.2900           ~ 134 0
49 PSR J1842+0358 Psr 18 42 17.02 +03 58 35.3           ~ 14 0
50 PSR J1843-0702 Psr 18 43 22.44 -07 02 54.6           ~ 29 0
51 PSR J1849+0409 Psr 18 49 03.47 +04 09 42.3           ~ 20 0
52 PSR B1848+04 Psr 18 51 03.298 +04 18 12.00           ~ 45 0
53 PSR J1852-0118 Psr 18 52 17.15 -01 18 14.8           ~ 13 0
54 PSR B1900+01 Psr 19 03 29.9860 +01 35 38.530           ~ 133 0
55 PSR J1903+0925 Psr 19 03 55.2 +09 25 55           ~ 14 0
56 PSR B1907+00 Psr 19 09 35.25200 +00 07 56.8400           ~ 91 0
57 PSR B1907+10 Psr 19 09 48.6222922872 +11 02 02.884778124     13.61     ~ 155 0
58 PSR B1907+03 Psr 19 10 09.01600 +03 58 30.0000     14.10     ~ 99 0
59 PSR B1910+08.4 Psr 19 13 00.50 +08 32 05.1           ~ 25 0
60 PSR B1911-04 Psr 19 13 54.16240 -04 40 47.5600           ~ 192 0
61 PSR J1915+1410 Psr 19 15 35.42 +14 10 51.5           ~ 12 0
62 PSR B1915+13 Psr 19 17 39.79400 +13 53 57.1600           ~ 190 0
63 PSR B1917+00 Psr 19 19 50.67000 +00 21 39.8000           ~ 120 0
64 PSR B1918+19 Psr 19 21 03.799 +19 48 44.70           ~ 119 0
65 PSR B1924+14 Psr 19 26 57.22 +14 34 55.3           ~ 50 0
66 PSR B1930+22 Psr 19 32 22.8565447656 +22 20 52.063074024     14.52     ~ 149 0
67 PSR J1935+2025 Psr 19 35 41.941 +20 25 40.10           ~ 39 0
68 PSR B1944+17 Psr 19 46 53.044 +18 05 41.24           ~ 252 0
69 PSR B2003-08 Psr 20 06 16.36500 -08 07 02.1600           ~ 113 0
70 PSR B2020+28 Psr 20 22 37.0671 +28 54 23.104           ~ 330 1
71 PSR J2047+5029 Psr 20 47 54.640 +50 29 38.17           ~ 18 0
72 PSR B2111+46 Psr 21 13 24.3295 +46 44 08.844           ~ 226 1
73 PSR B2148+63 Psr 21 49 58.7033 +63 29 44.277           ~ 96 0
74 PSR B2152-31 Psr 21 55 13.64000 -31 18 53.8000           ~ 62 0
75 PSR B2323+63 Psr 23 25 13.3196 +63 16 52.362     13.30     ~ 55 0
76 PSR B2327-20 Psr 23 30 26.98600 -20 05 29.7500           ~ 133 0

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