2021ApJ...917...48B

Query : 2021ApJ...917...48B

2021ApJ...917...48B - Astrophys. J., 917, 48-48 (2021/August-2)

Meterwavelength Single-pulse Polarimetric Emission Survey. V. Flux density, component spectral variation, and emission states.

BASU R., MITRA D. and MELIKIDZE G.I.

Abstract (from CDS):

We present the flux density measurements of the pulsars observed in the Meterwavelength Single-pulse Polarimetric Emission Survey. The average flux densities were estimated in 113 pulsars at two frequencies of 325 and 610 MHz using interferometric imaging. The average profile and single-pulse emission in each pulsar were calibrated using the estimated flux density. We have used the flux-calibrated average profile to study the variation of the spectral index across the emission beam in 21 pulsars where the core, inner cone, and the outer conal components could be clearly identified. The central core component showed a steeper increase in emission at the lower frequency compared with conal emission, with an average difference in spectral index δαcore–cone ∼ -0.7 between the core and the conal components in this frequency range. In contrast, the inner conal components had positive difference in their spectral index compared to the outer cones with average difference δαin–out ∼ +0.3. The variation in the spectral index across the pulse window should provide valuable inputs for constraining the radio emission processes. The single-pulse emission showed the presence of emission mode changing in 12 pulsars, with three cases where the phenomenon is being reported for the first time. In addition, we have also detected enhanced emission for short durations or flaring, in parts or across the entire emission window in 14 pulsars. The sudden changes in the emission during mode changing, as well as these bursting states, are unrelated to the emission mechanism and suggest the presence of rapid and repetitive changes during the plasma generation process.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Radio pulsars

Simbad objects: 154

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Number of rows : 154
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 QSO B0023-263 BLL 00 25 49.15629900 -26 02 12.6141092   20.30 19.5 18.084   ~ 173 1
2 PSR B0031-07 Psr 00 34 08.9100 -07 21 56.000           ~ 350 0
3 PKS 0114-21 rG 01 16 51.40488104 -20 52 06.8906316     16.5     ~ 91 1
4 PSR J0134-2937 Psr 01 34 18.69390 -29 37 17.1570           ~ 60 0
5 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
6 PSR B0148-06 Psr 01 51 22.71800 -06 35 02.9800           ~ 112 0
7 PSR B0149-16 Psr 01 52 10.85400 -16 37 53.6300           ~ 130 0
8 PSR B0203-40 Psr 02 06 01.29310 -40 28 03.6160           ~ 62 0
9 PSR B0301+19 Psr 03 04 33.115 +19 32 51.40           ~ 247 0
10 ICRF J031857.8+162832 Sy2 03 18 57.80304294 +16 28 32.6782325     22.0     ~ 212 1
11 4C 05.14 rG 03 23 20.2607119272 +05 34 11.891999568     19     ~ 82 1
12 PSR B0329+54 Psr 03 32 59.3370698592 +54 34 45.028206408           ~ 690 1
13 PSR B0450-18 Psr 04 52 34.11900 -17 59 23.1500           ~ 203 1
14 ICRF J052109.8+163822 Sy1 05 21 09.88596258 +16 38 22.0515459   19.37 18.84 18.480   ~ 910 1
15 PKS 0519-20 rG 05 21 38.8879 -20 47 39.361           ~ 32 1
16 PSR B0523+11 Psr 05 25 56.49800 +11 15 18.8000           ~ 125 1
17 PSR B0525+21 Psr 05 28 52.308 +22 00 01.00     14.30     ~ 370 0
18 ICRF J054236.1+495107 Sy1 05 42 36.13789710 +49 51 07.2337139   18.45 17.80 17.210   ~ 1573 1
19 PSR B0540+23 Psr 05 43 09.65 +23 29 06.1     14.40     ~ 278 0
20 PSR B0611+22 Psr 06 14 17.0324288405 +22 29 57.017874999           ~ 285 0
21 PSR B0626+24 Psr 06 29 05.7273 +24 15 41.546           ~ 123 0
22 PSR B0628-28 Psr 06 30 49.35000 -28 34 42.1000           ~ 313 1
23 PSR B0656+14 Psr 06 59 48.18800 +14 14 19.2000   24.85 24.90     ~ 943 1
24 PKS 0704-23 rG 07 06 33.5180238240 -23 11 37.853088900           ~ 37 1
25 PSR B0727-18 Psr 07 29 32.2900 -18 36 42.210           ~ 102 0
26 PSR B0736-40 Psr 07 38 32.2620 -40 42 39.420           ~ 212 0
27 PSR B0740-28 Psr 07 42 49.0730 -28 22 43.510           ~ 445 0
28 PSR B0756-15 Psr 07 58 29.06100 -15 28 08.3330           ~ 72 0
29 3C 191 QSO 08 04 47.9671662720 +10 15 23.746977252   18.65 18.40     ~ 295 2
30 PSR B0818-41 Psr 08 20 15.46000 -41 14 35.2000           ~ 100 0
31 PSR B0823+26 Psr 08 26 51.5068 +26 37 21.297           ~ 541 1
32 PSR B0826-34 Psr 08 28 16.6 -34 17 07           ~ 167 0
33 PSR B0834+06 Psr 08 37 05.64620 +06 10 15.8700           ~ 472 0
34 PKS 0834-19 rG 08 37 11.16132240 -19 51 56.7529560     19.6     ~ 59 1
35 PSR B0844-35 Psr 08 46 06.07120 -35 33 40.9100           ~ 89 0
36 PSR J0904-4546 Psr 09 05 23.90 -45 36 53.0           ~ 25 0
37 PSR J0905-5127 Psr 09 05 51.922 -51 27 48.71           ~ 51 0
38 PSR B0919+06 Psr 09 22 13.85000 +06 38 19.0000           ~ 329 1
39 PSR B0942-13 Psr 09 44 28.96700 -13 54 41.8800           ~ 87 0
40 PSR B0943+10 Psr 09 46 07.31 +09 51 57.3           ~ 364 1
41 PSR B0950+08 Psr 09 53 09.31210 +07 55 36.9000           ~ 806 2
42 3C 241 rG 10 21 54.533 +21 59 30.50   23.5       ~ 171 1
43 PKS 1030-34 rG 10 33 13.14 -34 18 45.2           ~ 19 1
44 PSR J1034-3224 Psr 10 34 19.46000 -32 24 26.2000           ~ 57 0
45 PSR B1114-41 Psr 11 16 43.08300 -41 22 44.8600           ~ 61 0
46 PSR B1133+16 Psr 11 36 03.09460 +15 51 15.9000           ~ 715 0
47 ICRF J115421.7-350529 Sy1 11 54 21.7842834888 -35 05 29.079469716   18.81 17.84     ~ 139 1
48 4C 31.38 Sy2 11 56 18.7420683840 +31 28 04.676598588   19.33 18.96     ~ 141 1
49 PSR B1237+25 Psr 12 39 40.386 +24 53 49.87           ~ 497 1
50 PSR B1254-10 Psr 12 57 04.77960 -10 27 04.7700           ~ 50 0
51 3C 283 rG 13 11 39.3334 -22 16 41.315   20       ~ 95 1
52 PSR B1325-43 Psr 13 28 06.41980 -43 57 44.5000           ~ 79 0
53 PSR B1325-49 Psr 13 28 33.58 -49 21 33.4           ~ 39 0
54 7C 132816.2+252436 QSO 13 30 37.6960744824 +25 09 10.983105972   18.31 17.67     ~ 373 1
55 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
56 PSR B1504-43 Psr 15 07 34.17500 -43 52 04.0500           ~ 45 0
57 4C -05.64 Bla 15 10 53.59142427 -05 43 07.4175000   17.44 17.21     ~ 249 1
58 PSR B1524-39 Psr 15 27 58.82800 -39 31 34.2000     10.58     ~ 50 0
59 PSR J1549-4848 Psr 15 49 21.02700 -48 48 36.1000           ~ 55 0
60 PSR B1552-31 Psr 15 55 17.94700 -31 34 20.3000           ~ 60 0
61 PSR J1556-4258 Psr 15 57 00.25445 -42 58 12.3500           ~ 43 0
62 PSR B1556-44 Psr 15 59 41.5290 -44 38 45.740           ~ 140 0
63 PSR B1558-50 Psr 16 02 18.7300 -51 00 06.100           ~ 104 0
64 PSR J1603-2531 Psr 16 03 04.82530 -25 31 47.9000           ~ 31 0
65 PSR B1600-49 Psr 16 04 22.9760 -49 09 57.980     13.00     ~ 83 0
66 PSR J1625-4050 Psr 16 25 10.33 -40 48 21.5           ~ 21 0
67 QSO B1622-310 BLL 16 25 55.5034803906 -31 08 08.577582708     18.1     ~ 35 1
68 PSR B1634-45 Psr 16 37 58.710 -45 53 27.30           ~ 60 0
69 PSR B1642-03 Psr 16 45 02.0330 -03 17 57.200           ~ 394 0
70 PSR J1648-3256 Psr 16 48 06.070 -32 56 40.80           ~ 25 0
71 PSR J1700-3310 Psr 17 00 52.96000 -33 12 45.0000           ~ 47 0
72 PSR B1700-32 Psr 17 03 22.51400 -32 41 48.5000           ~ 117 0
73 PSR J1705-3422 Psr 17 05 42.36200 -34 23 43.1000           ~ 44 0
74 PSR B1706-16 Psr 17 09 26.45200 -16 40 59.2000           ~ 247 0
75 PSR B1706-44 Psr 17 09 42.62000 -44 29 12.0000     13.30     ~ 670 1
76 PMN J1714-2514 Rad 17 14 47.793 -25 14 36.13           ~ 17 1
77 4C -00.67 Sy2 17 20 28.1680537512 -00 58 46.582453920   15.36       ~ 345 1
78 PSR B1717-29 Psr 17 20 34.13100 -29 33 14.0000           ~ 80 0
79 PSR B1718-32 Psr 17 22 02.96410 -32 07 45.0700           ~ 101 0
80 PSR B1719-37 Psr 17 22 59.17000 -37 12 03.0000           ~ 107 0
81 PSR J1727-2739 Psr 17 27 30.98000 -27 38 53.0000           ~ 51 0
82 PSR B1727-47 Psr 17 31 42.21000 -47 44 38.7000           ~ 166 0
83 PSR B1730-22 Psr 17 33 26.43000 -22 28 37.0000           ~ 68 0
84 PSR B1730-37 Psr 17 33 26.754 -37 16 54.60           ~ 54 0
85 PSR B1732-07 Psr 17 35 04.9730 -07 24 52.130           ~ 74 0
86 PSR B1736-29 Psr 17 39 34.28500 -29 03 03.9600           ~ 86 0
87 PSR B1737+13 Psr 17 40 07.3455 +13 11 56.690           ~ 191 0
88 PSR B1737-39 Psr 17 41 18.07900 -39 27 38.1200           ~ 78 0
89 PSR B1738-08 Psr 17 41 22.5629 -08 40 31.711           ~ 98 0
90 PSR B1742-30 Psr 17 45 56.30810 -30 40 23.3000           ~ 182 0
91 PSR B1745-12 Psr 17 48 17.4310 -13 00 53.400           ~ 68 0
92 PSR J1750-3506 Psr 17 50 44.501 -35 03 08.90           ~ 28 0
93 PSR B1747-46 Psr 17 51 42.18500 -46 57 26.7200           ~ 124 0
94 PSR J1752+2359 Psr 17 52 35.42 +23 59 48.2           ~ 64 0
95 PSR B1749-28 Psr 17 52 58.70700 -28 06 36.0000           ~ 277 1
96 PSR B1754-24 Psr 17 57 29.37000 -24 19 54.0000           ~ 102 0
97 PSR B1758-03 Psr 18 01 22.62800 -03 57 55.7000           ~ 54 0
98 PSR B1758-29 Psr 18 01 46.83900 -29 20 38.1000           ~ 53 0
99 PSR B1804-08 Psr 18 07 38.02590 -08 47 43.2800           ~ 139 0
100 PSR J1808-0812 Psr 18 08 09.43200 -08 13 01.8000           ~ 46 0
101 PSR J1816-2650 Psr 18 16 35.39900 -26 49 53.0000           ~ 59 0
102 PSR J1817-3837 Psr 18 17 00.270 -38 37 59.70           ~ 26 0
103 PSR B1813-36 Psr 18 17 05.8883476416 -36 18 04.776876972           ~ 62 0
104 PSR B1818-04 Psr 18 20 52.5920 -04 27 37.120           ~ 230 0
105 PMN J1822-0939 Rad 18 22 28.792 -09 38 57.03           ~ 49 1
106 PSR B1819-22 Psr 18 22 58.95000 -22 56 29.0000           ~ 123 0
107 PSR B1821+05 Psr 18 23 30.9731 +05 50 24.310           ~ 136 0
108 PSR B1820-31 Psr 18 23 46.81900 -31 06 48.0000           ~ 80 0
109 PSR J1823-0154 Psr 18 23 52.13800 -01 54 04.9400           ~ 32 0
110 PSR B1822-09 Psr 18 25 30.62000 -09 35 22.0000           ~ 382 0
111 PKS 1827-36 rG 18 30 58.9044114912 -36 02 30.801933924           ~ 85 1
112 PSR B1831-04 Psr 18 34 25.62100 -04 26 15.7000           ~ 103 0
113 PSR J1835-1106 Psr 18 35 18.287 -11 06 15.10           ~ 75 0
114 PSR B1833-10.3 Psr 18 35 57.44000 -10 19 51.0000           ~ 35 0
115 PSR B1839+09 Psr 18 41 55.92100 +09 12 07.2900           ~ 134 0
116 PSR B1839-04 Psr 18 42 26.4642900744 -04 00 00.516985452           ~ 81 0
117 PSR J1843-0000 Psr 18 43 27.96500 -00 00 41.5000           ~ 26 0
118 PSR B1842+14 Psr 18 44 54.8946 +14 54 14.120           ~ 127 0
119 PSR B1844-04 Psr 18 47 22.8222581784 -04 02 13.031112264           ~ 125 0
120 PSR B1845-01 Psr 18 48 23.59600 -01 23 58.4800           ~ 154 0
121 PSR J1848-1414 Psr 18 48 39.15 -14 14 17.0           ~ 23 0
122 PSR B1846-06 Psr 18 49 06.46470 -06 37 06.9100           ~ 74 0
123 PSR J1852-2610 Psr 18 52 59.47100 -26 10 13.6000           ~ 38 0
124 PSR B1857-26 Psr 19 00 47.54200 -26 00 44.8000           ~ 195 1
125 PSR B1859+07 Psr 19 01 39.02000 +07 16 33.6000     14.03     ~ 88 0
126 PSR J1901-0906 Psr 19 01 53.00700 -09 06 10.9000           ~ 55 0
127 PSR B1907+10 Psr 19 09 48.6222922872 +11 02 02.884778124     13.61     ~ 155 0
128 PSR B1907+03 Psr 19 10 09.01600 +03 58 30.0000     14.10     ~ 99 0
129 PSR B1911-04 Psr 19 13 54.16240 -04 40 47.5600           ~ 192 0
130 PSR B1915+09 Psr 19 16 32.33300 +09 51 25.9700           ~ 100 0
131 PSR B1915+13 Psr 19 17 39.79400 +13 53 57.1600           ~ 190 0
132 PSR J1919+0134 Psr 19 19 43.62 +01 34 56.5           ~ 20 0
133 PSR B1917+00 Psr 19 19 50.67000 +00 21 39.8000           ~ 120 0
134 PSR B1918+19 Psr 19 21 03.799 +19 48 44.70           ~ 119 0
135 PSR B1919+21 Psr 19 21 44.815 +21 53 02.25           ~ 411 0
136 ICRF J192417.4+332929 QSO 19 24 17.48046496 +33 29 29.7381957           ~ 17 0
137 PSR B1929+10 Psr 19 32 14.0570 +10 59 33.380           ~ 801 0
138 PSR B1937-26 Psr 19 41 00.41690 -26 02 05.8840           ~ 84 0
139 PSR B1944+17 Psr 19 46 53.044 +18 05 41.24           ~ 252 0
140 PSR B2003-08 Psr 20 06 16.36500 -08 07 02.1600           ~ 113 0
141 PSR B2043-04 Psr 20 46 00.17600 -04 21 26.3000           ~ 87 0
142 3C 422 QSO 20 47 10.3663354152 -02 36 22.142894832   20.80 19.50     ~ 92 1
143 PSR B2045-16 Psr 20 48 35.74000 -16 16 45.0000           ~ 344 0
144 ICRF J213750.0-204231 Sy1 21 37 50.00785656 -20 42 31.6728477   20.400 19.4 19.286   ~ 102 1
145 PSR J2144-3939 Psr 21 44 12.01000 -39 33 58.4000           ~ 145 0
146 PKS 2216-28 rG 22 19 42.5657 -27 56 27.238           ~ 26 1
147 3C 446 BLL 22 25 47.25929101 -04 57 01.3907626   18.83 18.39 16.3   ~ 863 1
148 3C 454.0 QSO 22 51 34.7277468096 +18 48 40.087264428   18.52 18.4     ~ 232 2
149 PSR B2303+30 Psr 23 05 58.3212 +31 00 01.281           ~ 216 0
150 PSR B2310+42 Psr 23 13 08.5976 +42 53 12.987           ~ 147 0
151 PSR B2315+21 Psr 23 17 57.8419 +21 49 48.019           ~ 119 0
152 PSR B2319+60 Psr 23 21 55.213 +60 24 30.71     13.80     ~ 200 0
153 PSR B2327-20 Psr 23 30 26.98600 -20 05 29.7500           ~ 133 0
154 PSR J2347-0612 Psr 23 46 50.54000 -06 10 01.0400           ~ 68 0

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