2020A&A...644A..73W

Query : 2020A&A...644A..73W

2020A&A...644A..73W - Astronomy and Astrophysics, volume 644A73-73 (2020/12-1)

Jiamusi pulsar observations. III. Nulling of 20 pulsars.

WANG P.F., HAN J.L., HAN L., CAI B.Y., WANG C., WANG T., CHEN X., ZHOU D.J., YU Y.Z., HAN J., XU J., GAO X.Y., HONG T., HOU L.G. and DONG B.

Abstract (from CDS):


Aims. Most pulsar nulling observations have been conducted at frequencies lower than 1400 MHz. We aim to understand the nulling behaviors of pulsars at relatively high frequencies, and to decipher whether or not nulling is caused by a global change in the pulsar magnetosphere.
Methods. We used the Jiamusi 66 m telescope to observe 20 bright pulsars at 2250 MHz with unprecedented lengths of time. We estimated the nulling fractions of these pulsars, and identified the null and emission states of the pulses. We also calculated the nulling degrees and scales of the emission-null pairs to describe the distributions of emission and null lengths.
Results. Three pulsars, PSRs J0248+6021, J0543+2329, and J1844+00, are found to null for the first time. The details of null-to-emission and emission-to-null transitions within the pulse window are observed for the first time for PSR J1509+5531, which is a low-probability event. A complete cycle of long nulls with timescales of hours is observed for PSR J1709-1640. For most of these pulsars, the K-S tests of nulling degrees and nulling scales reject the hypothesis that null and emission are caused by random processes at high significance levels. Emission-null sequences of some pulsars exhibit quasi-periodic, low-frequency or featureless modulations, which might be related to different origins. During transitions between emission and null states, pulse intensities have diverse tendencies for variation. Significant correlations are found between respectively nulling fraction, nulling cadence, and nulling scale and the energy loss rate of the pulsars. Combined with the nulling fractions reported in the literature for 146 nulling pulsars, we find that statistically large nulling fractions are more tightly related to pulsar period than to characteristic age or energy-loss rate.

Abstract Copyright: © ESO 2020

Journal keyword(s): pulsars: general

VizieR on-line data: <Available at CDS (J/A+A/644/A73): tablec1.dat list.dat fits/*>

Simbad objects: 216

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Number of rows : 216
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 B0011+47 Psr 00 14 17.75 +47 46 33.4           ~ 67 0
2 PSR B0031-07 Psr 00 34 08.9100 -07 21 56.000           ~ 350 0
3 PSR B0045+33 Psr 00 48 33.98 +34 12 08.0           ~ 45 0
4 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
5 PSR B0148-06 Psr 01 51 22.71800 -06 35 02.9800           ~ 112 0
6 PSR B0149-16 Psr 01 52 10.85400 -16 37 53.6300           ~ 130 0
7 PSR J0248+6021 Psr 02 48 18.642 +60 21 34.70           ~ 63 1
8 PSR B0301+19 Psr 03 04 33.115 +19 32 51.40           ~ 247 0
9 PSR B0329+54 Psr 03 32 59.3370698592 +54 34 45.028206408           ~ 690 1
10 PSR B0450-18 Psr 04 52 34.11900 -17 59 23.1500           ~ 203 1
11 PSR J0458-0505 Psr 04 58 37.12 -05 05 05.1           ~ 7 0
12 PSR B0523+11 Psr 05 25 56.49800 +11 15 18.8000           ~ 125 1
13 PSR B0525+21 Psr 05 28 52.308 +22 00 01.00     14.30     ~ 370 0
14 PSR B0529-66.9 Psr 05 29 50.90000 -66 52 39.9000           ~ 42 0
15 PSR B0538-75 Psr 05 36 30.82900 -75 43 54.6300           ~ 75 0
16 PSR J0540+3207 Psr 05 40 37 +32 07.6           ~ 18 0
17 PSR B0540+23 Psr 05 43 09.65 +23 29 06.1     14.40     ~ 278 0
18 PSR B0626+24 Psr 06 29 05.7273 +24 15 41.546           ~ 123 0
19 PSR B0628-28 Psr 06 30 49.35000 -28 34 42.1000           ~ 313 1
20 PSR B0656+14 Psr 06 59 48.18800 +14 14 19.2000   24.85 24.90     ~ 943 1
21 PSR J0726-2612 Psr 07 26 08.12 -26 12 38.1           ~ 36 0
22 PSR B0736-40 Psr 07 38 32.2620 -40 42 39.420           ~ 212 0
23 PSR B0740-28 Psr 07 42 49.0730 -28 22 43.510           ~ 445 0
24 PSR B0751+32 Psr 07 54 40.688 +32 31 56.20           ~ 88 0
25 PSR B0809+74 Psr 08 14 59.500 +74 29 05.70           ~ 425 0
26 PSR B0818-41 Psr 08 20 15.46000 -41 14 35.2000           ~ 100 0
27 PSR B0818-13 Psr 08 20 26.40700 -13 50 56.3200           ~ 229 0
28 PSR J0823+0159 Psr 08 23 09.78731 +01 59 12.6003           DA 244 0
29 PSR B0823+26 Psr 08 26 51.5068 +26 37 21.297           ~ 541 1
30 PSR B0826-34 Psr 08 28 16.6 -34 17 07           ~ 167 0
31 PSR B0834+06 Psr 08 37 05.64620 +06 10 15.8700           ~ 472 0
32 PSR B0835-41 Psr 08 37 21.1943 -41 35 14.563     12.69     ~ 149 0
33 PSR B0853-33 Psr 08 55 38.42100 -33 31 38.9900           ~ 57 0
34 PSR B0906-17 Psr 09 08 38.22700 -17 39 39.9000           ~ 100 0
35 PSR B0919+06 Psr 09 22 13.85000 +06 38 19.0000           ~ 329 1
36 PSR B0932-52 Psr 09 34 28.23700 -52 49 27.3000           ~ 55 0
37 PSR J0941-39 Psr 09 42 -39.7           ~ 26 0
38 PSR B0940-55 Psr 09 42 14.88000 -55 52 55.1000           ~ 101 0
39 PSR J0943+22 Psr 09 43 25 +22 56.0           ~ 23 0
40 PSR B0940+16 Psr 09 43 30.10 +16 31 37.0           ~ 79 0
41 PSR B0942-13 Psr 09 44 28.96700 -13 54 41.8800           ~ 87 0
42 PSR B0950+08 Psr 09 53 09.31210 +07 55 36.9000           ~ 806 2
43 PSR J1012-5830 Psr 10 12 54.7512970536 -58 30 24.443775000           ~ 7 0
44 PSR J1049-5833 Psr 10 49 50.34 -58 33 44.6           ~ 22 0
45 PSR J1055-6905 Psr 10 55 44.71 -69 05 11.4           ~ 8 0
46 PSR B1055-52 Psr 10 57 59.0450 -52 26 56.330           ~ 757 0
47 PSR B1056-57 Psr 10 59 00.88860 -57 42 14.5500           ~ 51 0
48 PSR J1107-5907 Psr 11 07 34.46 -59 07 18.7           ~ 42 0
49 PSR B1112+50 Psr 11 15 38.400 +50 30 12.29           ~ 154 0
50 PSR B1114-41 Psr 11 16 43.08300 -41 22 44.8600           ~ 61 0
51 PSR J1129-53 Psr 11 29 21 -53 31.0           ~ 9 0
52 PSR B1131-62 Psr 11 33 51.30000 -62 50 51.0000           ~ 33 0
53 PSR B1133+16 Psr 11 36 03.09460 +15 51 15.9000           ~ 715 0
54 PSR B1154-62 Psr 11 57 15.2070 -62 24 50.930           ~ 118 0
55 PSR J1225-6035 Psr 12 25 28.63 -60 35 37.6           ~ 10 0
56 PSR B1237+25 Psr 12 39 40.386 +24 53 49.87           ~ 497 1
57 PSR B1240-64 Psr 12 43 17.2912183824 -64 23 23.082548820           ~ 119 0
58 PSR J1255-6131 Psr 12 55 54.86 -61 31 10.1           ~ 8 0
59 PSR J1307-6318 Psr 13 07 54.7 -63 18 35           ~ 13 0
60 PSR J1322-62 Psr 13 22.9 -62 51           ~ 2 0
61 PSR B1322-66 Psr 13 26 02.70600 -67 00 50.1000           ~ 55 0
62 PSR B1323-63 Psr 13 26 32.43300 -64 08 43.8000           ~ 47 0
63 PSR B1323-58 Psr 13 26 58.2170 -58 59 29.290           ~ 82 0
64 PSR B1325-49 Psr 13 28 33.58 -49 21 33.4           ~ 39 0
65 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
66 PSR B1356-60 Psr 13 59 58.2480 -60 38 07.550           ~ 131 0
67 PSR B1358-63 Psr 14 01 52.45000 -63 57 42.0000           ~ 83 0
68 PSR J1406-5806 Psr 14 06 01.2 -58 06 32           ~ 11 0
69 PSR J1424-6956 Psr 14 23 26.790 -69 53 42.82           ~ 9 0
70 PSR B1424-55 Psr 14 28 26.24000 -55 30 50.0600           ~ 52 0
71 PSR B1426-66 Psr 14 30 40.73200 -66 23 05.5460           ~ 102 0
72 PSR B1449-64 Psr 14 53 32.6546 -64 13 16.047           ~ 158 0
73 PSR B1451-68 Psr 14 56 00.0175876848 -68 43 40.034742348           ~ 203 0
74 PSR B1454-51 Psr 14 57 40.09300 -51 22 54.9000           ~ 28 0
75 PSR J1502-5653 Psr 15 02 57.389 -56 53 39.21           ~ 24 0
76 PSR B1508+55 Psr 15 09 25.674 +55 31 32.90           ~ 322 1
77 PSR B1510-48 Psr 15 14 14.56300 -48 34 19.9700           ~ 45 0
78 PSR J1514-5925 Psr 15 14 59.10 -59 25 43.3           ~ 26 0
79 PSR J1525-5417 Psr 15 25 28.35 -54 17 20.0           ~ 10 0
80 PSR B1524-39 Psr 15 27 58.82800 -39 31 34.2000     10.58     ~ 50 0
81 PSR B1530+27 Psr 15 32 10.3646 +27 45 49.623           ~ 122 0
82 PSR J1534-46 Psr 15 34 -46.2           ~ 3 0
83 PSR B1530-53 Psr 15 34 08.3012586672 -53 34 20.547404184           ~ 80 0
84 PSR B1540-06 Psr 15 43 30.1373 -06 20 45.332           ~ 131 1
85 PSR B1555-55 Psr 15 59 20.70000 -55 45 47.0000     13.40     ~ 31 0
86 PSR B1556-44 Psr 15 59 41.5290 -44 38 45.740           ~ 140 0
87 PSR B1604-00 Psr 16 07 12.078 -00 32 40.98           ~ 228 1
88 PSR B1612+07 Psr 16 14 40.906 +07 37 31.00           ~ 101 0
89 PSR J1624-4613 Psr 16 24 18.7 -46 13 02           ~ 7 0
90 PSR B1630-44 Psr 16 33 47.03000 -44 53 08.5800           ~ 30 0
91 PSR J1634-5107 Psr 16 34 04.91 -51 07 44.8           ~ 10 0
92 PSR J1639-4359 Psr 16 39 06.85 -43 59 52.0           ~ 7 0
93 PSR B1641-45 Psr 16 44 49.28482 -45 59 09.6360     12.60     ~ 217 0
94 PSR B1642-03 Psr 16 45 02.0330 -03 17 57.200           ~ 394 0
95 PSR B1641-68 Psr 16 46 54.91000 -68 31 51.7000           ~ 50 0
96 PSR J1647-3607 Psr 16 47 46.51 -36 07 04.0           ~ 9 0
97 PSR J1648-4458 Psr 16 48 13.0 -44 58 26           ~ 9 0
98 PSR J1649-4349 Psr 16 49 20.42 -43 49 22.2           ~ 26 0
99 PSR J1649+2533 Psr 16 49 44.23 +25 33 07.0           ~ 33 0
100 PSR B1650-38 Psr 16 53 39.798 -38 38 20.80     11.61     ~ 35 0
101 PSR B1658-37 Psr 17 01 18.45000 -37 26 27.2000           ~ 45 0
102 PSR J1702-4428 Psr 17 02 52.6 -44 28 03           ~ 8 0
103 PSR B1700-32 Psr 17 03 22.51400 -32 41 48.5000           ~ 117 0
104 PSR J1703-4902 Psr 17 03 54.54100 -48 52 01.0400           ~ 42 0
105 PSR J1707-4729 Psr 17 07 15.547 -47 29 34.50           ~ 19 0
106 PSR B1706-16 Psr 17 09 26.45200 -16 40 59.2000           ~ 247 0
107 PSR J1715-4034 Psr 17 15 40.92000 -40 34 18.0000           ~ 22 0
108 PSR B1713-40 Psr 17 17 52.31000 -41 03 13.0000           ~ 42 0
109 PSR B1718-32 Psr 17 22 02.96410 -32 07 45.0700           ~ 101 0
110 PSR J1725-4043 Psr 17 25 41.42 -40 43 11.0           ~ 9 0
111 PSR J1726-31 Psr 17 26.6 -31 57           ~ 3 0
112 PSR J1727-2739 Psr 17 27 30.98000 -27 38 53.0000           ~ 51 0
113 PSR B1727-47 Psr 17 31 42.21000 -47 44 38.7000           ~ 166 0
114 PSR B1730-37 Psr 17 33 26.754 -37 16 54.60           ~ 54 0
115 PSR J1736-2457 Psr 17 36 45.4563358128 -24 57 51.337007964           ~ 16 0
116 PSR J1738-2330 Psr 17 38 08.8 -23 30 47           ~ 21 0
117 PSR B1735-32 Psr 17 38 54.185 -32 11 53.60           ~ 42 0
118 PSR B1737+13 Psr 17 40 07.3455 +13 11 56.690           ~ 191 0
119 PSR J1741-3016 Psr 17 41 07.04 -30 16 31.0           ~ 25 0
120 PSR B1738-08 Psr 17 41 22.5629 -08 40 31.711           ~ 98 0
121 PSR J1742-4616 Psr 17 42 26.10 -46 16 53.5           ~ 13 0
122 PSR J1744-3922 Psr 17 44 02.67 -39 22 21.1           ~ 19 1
123 PSR B1742-30 Psr 17 45 56.30810 -30 40 23.3000           ~ 182 0
124 PSR J1749+16 Psr 17 49 29 +16 24.0           ~ 5 0
125 PSR J1750+07 Psr 17 50 40 +07 33.0           ~ 5 0
126 PSR B1747-31 Psr 17 50 47.31 -31 57 44.3           ~ 42 0
127 PSR B1747-46 Psr 17 51 42.18500 -46 57 26.7200           ~ 124 0
128 PSR J1752+2359 Psr 17 52 35.42 +23 59 48.2           ~ 64 0
129 PSR B1749-28 Psr 17 52 58.70700 -28 06 36.0000           ~ 277 1
130 PSR B1754-22.3 Psr 17 57 50.772 -22 23 49.00           ~ 15 0
131 PSR B1755-25.6 Psr 17 58 31.94 -25 40 49.0           ~ 8 0
132 PSR B1758-03 Psr 18 01 22.62800 -03 57 55.7000           ~ 54 0
133 PSR J1808-0812 Psr 18 08 09.43200 -08 13 01.8000           ~ 46 0
134 PSR J1809-2109 Psr 18 09 14.32000 -21 09 02.0000           ~ 27 0
135 PSR B1809-17.3 Psr 18 12 07.208 -17 18 29.50           ~ 33 0
136 PSR B1813-36 Psr 18 17 05.8883476416 -36 18 04.776876972           ~ 62 0
137 PSR J1819-1458 Psr 18 19 34.173 -14 58 03.57           ~ 136 0
138 PSR J1819+1305 Psr 18 19 56.226 +13 05 15.25           ~ 41 0
139 PSR J1820-0509 Psr 18 20 22.73 -05 09 38.5           ~ 16 0
140 PSR B1818-04 Psr 18 20 52.5920 -04 27 37.120           ~ 230 0
141 PSR B1819-22 Psr 18 22 58.95000 -22 56 29.0000           ~ 123 0
142 PSR J1823-1126 Psr 18 23 19.9 -11 26 04           ~ 8 0
143 PSR B1821+05 Psr 18 23 30.9731 +05 50 24.310           ~ 136 0
144 PSR B1822-14 Psr 18 25 02.927 -14 46 52.60           ~ 92 0
145 PSR J1825-33 Psr 18 26 -33.4           ~ 5 0
146 PSR J1827-0750 Psr 18 27 02.70710 -07 50 15.4000           ~ 23 0
147 PSR B1827-11.6 Psr 18 30 01.78700 -11 35 27.0000           ~ 22 0
148 PSR B1828-12.4 Psr 18 31 12.83 -12 23 31.0           ~ 16 0
149 PSR J1832+0029 Psr 18 32 50.7 +00 29 27           ~ 59 0
150 PSR B1831-10.9 Psr 18 33 58.40 -10 55 31.0           ~ 8 0
151 PSR B1831-00 Psr 18 34 17.25 -00 10 53.3           DA 101 0
152 PSR B1834-12.7 Psr 18 37 09.41 -12 43 56.0           ~ 7 0
153 PSR J1837-0653 Psr 18 37 14.53000 -06 52 55.0000           ~ 43 0
154 PSR J1840-0840 Psr 18 40 51.9 -08 40 29           ~ 23 0
155 PSR J1840-1417 Psr 18 41.0 -14 18           ~ 22 0
156 PSR J1841-0500 Psr 18 41 18.14 -05 00 19.5           ~ 54 0
157 PSR J1841-0310 Psr 18 41 25.9 -03 10 21           ~ 8 0
158 PSR B1839+09 Psr 18 41 55.92100 +09 12 07.2900           ~ 134 0
159 PSR J1843-0211 Psr 18 43 30.33 -02 11 02.8           ~ 20 0
160 PSR J1844+00 Psr 18 44 11 +00 35.0           ~ 14 0
161 PSR B1842+14 Psr 18 44 54.8946 +14 54 14.120           ~ 127 0
162 PSR B1844-04 Psr 18 47 22.8222581784 -04 02 13.031112264           ~ 125 0
163 PSR B1845-19 Psr 18 48 18.03 -19 52 31.0           ~ 74 0
164 PSR B1848+12 Psr 18 51 13.2375743628 +12 59 35.328125251           ~ 48 0
165 PSR J1852-0635 Psr 18 52 57.44800 -06 36 00.4500           ~ 41 0
166 PSR J1853+0546 Psr 18 53 04.36 +05 05 26.1           ~ 21 0
167 PSR J1854-15 Psr 18 54 53.6 -15 57 47           ~ 10 0
168 PSR J1857-1027 Psr 18 57 26.45 -10 27 01.0           ~ 9 0
169 PSR B1857-26 Psr 19 00 47.54200 -26 00 44.8000           ~ 195 1
170 PSR B1858+04.1 Psr 19 01 10.3 +04 13 51           ~ 17 0
171 PSR J1901-0906 Psr 19 01 53.00700 -09 06 10.9000           ~ 55 0
172 PSR B1901+10 Psr 19 04 02.49 +10 11 34.6           ~ 28 0
173 PSR B1907+03 Psr 19 10 09.01600 +03 58 30.0000     14.10     ~ 99 0
174 PSR J1910+0517 Psr 19 10 37.907 +05 17 56.00           ~ 15 0
175 PSR B1911-04 Psr 19 13 54.16240 -04 40 47.5600           ~ 192 0
176 PSR J1916+1023 Psr 19 16 36.9 +10 23 03           ~ 9 0
177 PSR B1917+00 Psr 19 19 50.67000 +00 21 39.8000           ~ 120 0
178 PSR J1920+1040 Psr 19 20 55.4 +10 40 31           ~ 13 0
179 PSR B1918+19 Psr 19 21 03.799 +19 48 44.70           ~ 119 0
180 PSR B1919+21 Psr 19 21 44.815 +21 53 02.25           ~ 411 0
181 PSR B1923+04 Psr 19 26 24.47200 +04 31 31.5400           ~ 75 0
182 PSR J1926-0652 Psr 19 26 37.11 -06 52 43.0           ~ 14 0
183 PSR J1926-1314 Psr 19 26 53.835 -13 14 03.80           ~ 7 0
184 PSR J1929+1357 Psr 19 29 10.62 +13 57 35.9           ~ 19 0
185 PSR B1929+10 Psr 19 32 14.0570 +10 59 33.380           ~ 801 0
186 PSR J1933+2421 Psr 19 33 37.83 +24 36 39.6           ~ 157 0
187 PSR J1935+12 Psr 19 35 15.87 +11 59 06.5           ~ 6 0
188 PSR B1933+16 Psr 19 35 47.7011639352 +16 16 40.034899524           ~ 328 1
189 PSR B1942+17 Psr 19 44 31.8245719680 +17 55 41.670456996           ~ 22 0
190 PSR B1942-00 Psr 19 45 28.33000 -00 40 59.0000           ~ 65 0
191 PSR B1944+17 Psr 19 46 53.044 +18 05 41.24           ~ 252 0
192 PSR B1946+35 Psr 19 48 25.0067 +35 40 11.057           ~ 180 0
193 PSR B2003-08 Psr 20 06 16.36500 -08 07 02.1600           ~ 113 0
194 PSR B2016+28 Psr 20 18 03.8999255016 +28 39 54.940329468           ~ 374 0
195 PSR B2020+28 Psr 20 22 37.0671 +28 54 23.104           ~ 330 1
196 PSR B2021+51 Psr 20 22 49.8730 +51 54 50.233           ~ 288 1
197 PSR J2033+0042 Psr 20 33 31.12000 +00 42 24.1000           ~ 11 0
198 PSR B2034+19 Psr 20 37 14.54 +19 42 54.3           ~ 41 0
199 PSR B2044+15 Psr 20 46 39.33600 +15 40 33.6000           ~ 109 0
200 PSR B2045-16 Psr 20 48 35.74000 -16 16 45.0000           ~ 344 0
201 PSR J2050+13 Psr 20 50 00 +13 01.0           ~ 4 0
202 PSR B2053+36 Psr 20 55 31.3552 +36 30 21.489           ~ 103 0
203 PSR B2110+27 Psr 21 13 04.3506 +27 54 01.160           ~ 115 0
204 PSR B2111+46 Psr 21 13 24.3295 +46 44 08.844           ~ 226 1
205 PSR B2113+14 Psr 21 16 13.76100 +14 14 20.3800           ~ 91 0
206 PSR B2122+13 Psr 21 24 46.574 +14 07 19.30           ~ 37 0
207 PSR B2154+40 Psr 21 57 01.840 +40 17 45.89           ~ 155 0
208 PSR J2208+5500 Psr 22 08 23.720 +55 00 08.41           ~ 10 0
209 PSR B2217+47 Psr 22 19 48.139 +47 54 53.93           ~ 230 0
210 PSR J2253+1516 Psr 22 53 14.533 +15 16 37.83           ~ 28 0
211 PSR B2303+30 Psr 23 05 58.3212 +31 00 01.281           ~ 216 0
212 PSR B2310+42 Psr 23 13 08.5976 +42 53 12.987           ~ 147 0
213 PSR B2315+21 Psr 23 17 57.8419 +21 49 48.019           ~ 119 0
214 PSR B2319+60 Psr 23 21 55.213 +60 24 30.71     13.80     ~ 200 0
215 PSR B2327-20 Psr 23 30 26.98600 -20 05 29.7500           ~ 133 0
216 PSR J2347-0612 Psr 23 46 50.54000 -06 10 01.0400           ~ 68 0

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