Table 2.
Nulling statistics of 20 pulsars.
| JName | Nsub | fn | Pcri | Nc | Ne | Nn | α1 | α2 | s1 | s2 |
|---|---|---|---|---|---|---|---|---|---|---|
| (%) | (%) | (P) | (P) | (°) | (°) | (P) | (P) | |||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) |
| J0034−0721 | 380 | 12.4 ( † ) < fn < 37.4 | 0.834 | – | – | – | – | – | – | – |
| J0248+6021 | 1312 | 0.0 < fn < 34.7 | 0.125 | – | – | – | – | – | – | – |
| J0304+1932 | 300 | 8.9 < fn < 17.5 | 0.012 | 16 | 132.8(76.0) | 17.6(7.2) | 9.4(4.7) | 11.6(9.3) | 134(76) | 128(72) |
| J0332+5434 | 22 000 | 0.0 ± 0.0 | 5.2e−04 | – | – | – | – | – | – | – |
| J0528+2200 | 243 | 8.1 ( † ) < fn < 22.3 | 1.158 | – | – | – | – | – | – | – |
| J0543+2329 | 4582 | 0.0 < fn < 16.6 | 0.003 | – | – | – | – | – | – | – |
| J0826+2637 | 4745 | 0.0 < fn < 3.4 | 0.012 | – | – | – | – | – | – | – |
| J0908−1739 | 175 | 18.8 < fn < 29.2 | 0.008 | 2 | 1526.4(992.0) | 512.0(32.0) | – | – | – | – |
| J0922+0638 | 9600 | 0.0 < fn < 0.06 | 0.095 | – | – | – | – | – | – | – |
| J0953+0755 | 5850 | 0.1 < fn < 11.8 | 0.193 | – | – | – | – | – | – | – |
| J1136+1551 | 2078 | 0.3 < fn < 11.5 | 0.038 | 16 | 374.8(374.0) | 4(0) | 1.4(1.4) | 2.0(1.7) | 353(361) | 218(159) |
| J1239+2453 | 9000 | 1.1 < fn < 2.8 | 0.043 | 161 | 106.8(107.2) | 2.4(1.0) | 3.7(6.1) | 3.7(6.2) | 106(108) | 104(97) |
| J1509+5531 | 4600 | 2.0 ± 0.1 | 0.067 | 120 | 36.0(35.3) | 1.7(1.2) | 8.2(11.3) | 8.2(12.2) | 36(35) | 36(35) |
| J1709−1640 ( ‡ ) | 3500 | 2.1 < fn < 3.4 | 0.007 | 36 | 178.2(178.8) | 11.2(9.6) | 26.3(31.3) | 22.4(26.0) | 176(175) | 180(180) |
| J1844+00 | 734 | 0.3 < fn < 34.0 | 4.7e−07 | 1 | 11616(4512) | 256(0) | – | – | – | – |
| J1932+1059 | 73 000 | 0.03 ± 0.01 | 0.024 | 243 | 294.5(430.1) | 1.0(0.2) | 1.6(3.1) | 1.7(3.1) | 297(432) | 291(431) |
| J2022+5154 | 24 500 | 0.12 ± 0.01 | 1.2e−03 | 75 | 313.0(346.7) | 1.2(0.4) | 2.7(7.4) | 3.3(10.5) | 321(351) | 310(345) |
| J2048−1616 | 506 | 2.1 < fn < 6.4 | 0.112 | 30 | 29.8(34.2) | 3.0(1.6) | 14.7(13.5) | 14.4(14.8) | 27(30) | 31(35) |
| J2313+4253 | 8000 | 5.2 ± 0.2 | 6.2e−05 | 219 | 33.2(34.9) | 3.0(2.5) | 21.9(27.1) | 20.4(24.0) | 34(35) | 34(35) |
| J2321+6024 | 4656 | 8.5 < fn < 18.5 | 0.053 | 393 | 36.4(39.6) | 10.8(8.4) | 25.8(20.2) | 25.5(19.0) | 40(39) | 40(39) |
Notes. ( † )Distributions of the significance for emission and null pulses cannot be resolved. ( ‡ )Analysis is for the block-A data from 27 Oct 2017. In the table, Nsub is from Table 1, fn is the nulling fraction or its upper or lower limits, Pcri is the probability for misidentification of nulls, Nc is the number of nulling cycles, Ne and Nn are the mean lengths of emission and null with their standard deviations given in the parentheses, and (α1, α2) and (s1, s2) are the nulling degrees and scales for EN and NE pairs from observations.
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