2018MNRAS.479.3393W

Query : 2018MNRAS.479.3393W

2018MNRAS.479.3393W - Mon. Not. R. Astron. Soc., 479, 3393-3404 (2018/September-3)

The decomposition of temporal variations of pulsar dispersion measures.

WANG P.F. and HAN J.L.

Abstract (from CDS):

The pulsar dispersion measure (DM) accounts for the total electron content between a pulsar and us. High-precision observations for projects of pulsar timing arrays show temporal DM variations of millisecond pulsars. The aim of this paper is to decompose the DM variations of 30 millisecond pulsars using the Hilbert-Huang transform (HHT) method, so that we can determine the general DM trends resulting from interstellar clouds and the annual DM variation curves resulting from the solar wind, interplanetary medium and/or ionosphere. We find that the decomposed annual variation curves of 22 pulsars exhibit quasi-sinusoidal, one-component and double-component features of different origins. The amplitudes and phases of the curve peaks are related to the ecliptic latitude and longitude of pulsars, respectively.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

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

Simbad objects: 30

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Number of rows : 30
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 J0023+0923 Psr 00 23 16.890 +09 23 24.18           ~ 137 0
2 PSR J0030+0451 Psr 00 30 27.42348 +04 51 39.7144           ~ 596 1
3 PSR J0340+41 Psr 03 40 23.2887 +41 30 45.300           ~ 91 0
4 PSR B0613-02.0 Psr 06 13 43.977070 -02 00 47.34294           ~ 319 1
5 PSR J0645+5158 Psr 06 45 59.08191 +51 58 14.9210           ~ 65 0
6 PSR J1012+5307 Psr 10 12 33.4345449600 +53 07 02.548542576     19.5     DA 419 1
7 PSR J1025-07 Psr 10 24 38.6991893112 -07 19 19.045523388     19.81 18.78 18.00 ~ 286 1
8 PSR J1455-3300 Psr 14 55 47.976991 -33 30 46.40280           ~ 165 1
9 PSR J1600-3053 Psr 16 00 51.902514 -30 53 49.45343           ~ 218 0
10 PSR J1614-2230 Psr 16 14 36.50974 -22 30 31.5420           ~ 452 1
11 PSR J1640+2224 Psr 16 40 16.744850 +22 24 08.84119           ~ 210 0
12 PSR J1643-1224 Psr 16 43 38.16612 -12 24 58.6334           ~ 260 2
13 PSR J1713+0747 Psr 17 13 49.5367813 +07 47 37.450240           ~ 530 1
14 PSR J1738+0333 Psr 17 38 53.966386 +03 33 10.87200           ~ 191 1
15 PSR J1741+1351 Psr 17 41 31.1499024 +13 51 44.279709           ~ 122 0
16 PSR J1744-1134 Psr 17 44 29.4220844 -11 34 54.801320           ~ 323 1
17 PSR J1747-4036 Psr 17 47 48.715690 -40 36 54.79950           ~ 83 0
18 PSR J1853+1303 Psr 18 53 57.3183 +13 03 44.088           ~ 107 1
19 PSR B1855+09 Psr 18 57 36.390620 +09 43 17.20712           DA 569 1
20 PSR J1909-3744 Psr 19 09 47.42820 -37 44 14.7740           ~ 343 2
21 PSR J1918-0642 Psr 19 18 48.027685 -06 42 34.95735           ~ 146 0
22 PSR J1923+2515 Psr 19 23 22.494560 +25 15 40.64360           ~ 53 0
23 PSR B1937+21.4 Psr 19 39 38.560096 +21 34 59.13552           ~ 1142 0
24 PSR J1944+0907 Psr 19 44 09.32 +09 07 23.2           ~ 65 1
25 PSR J2010-1323 Psr 20 10 45.922635 -13 23 56.13270           ~ 93 0
26 PSR J2043+1711 Psr 20 43 20.8828 +17 11 28.941           ~ 129 1
27 PSR B2145-07.8 Psr 21 45 50.45590 -07 50 18.5900           ~ 336 0
28 PSR J2214+3000 Psr 22 14 38.8480 +30 00 38.209           ~ 136 0
29 PSR J2302+4442 Psr 23 02 46.9789 +44 42 22.102           ~ 124 0
30 PSR J2317+1439 Psr 23 17 09.235606 +14 39 31.29559           ~ 211 1

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