2006ApJ...650.1048G

Query : 2006ApJ...650.1048G

2006ApJ...650.1048G - Astrophys. J., 650, 1048-1062 (2006/October-3)

Formation of a partially screened inner acceleration region in radio pulsars: drifting subpulses and thermal X-Ray emission from polar cap surface.

GIL J., MELIKIDZE G. and ZHANG B.

Abstract (from CDS):

The subpulse drifting phenomenon in pulsar radio emission is considered within the partially screened inner gap model, in which the sub-Goldreich-Julian thermionic flow of iron ions or electrons coexists with the spark-associated electron-positron plasma flow. We derive a simple formula that relates the thermal X-ray luminosity LXfrom the spark-heated polar cap and the E×B subpulse periodicity P{d4}3(polar cap carousel time). For PSRs B0943+10 and B1133+16, the only two pulsars for which both P{d4}3and LXare known observationally, this formula holds well. For a few other pulsars, for which only one quantity is measured observationally, we predict the value of the other quantity and propose relevant observations that can confirm or discard the model. Then we further study the detailed physical conditions that allow such partially screened inner gap to form. By means of the condition Tc/Ts>1 (where Tcis the critical temperature above which the surface delivers a thermal flow to adequately supply the corotation charge density, and Tsis the actual surface temperature), it is found that a partially screened gap (PSG) can be formed given that the near surface magnetic fields are very strong and curved. We consider both curvature radiation (CR) and resonant inverse Compton scattering (ICS) to produce seed photons for pair production, and find that the former is the main agency to produce gamma rays to discharge the PSG.

Abstract Copyright: ∼

Journal keyword(s): Stars: Pulsars: General - Stars: Neutron - X-Rays: Stars

CDS comments: PSR J2007+0912 is a misprint for PSR J2007+0910

Simbad objects: 103

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Number of rows : 103
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 B0037+56 Psr 00 40 32.3899 +57 16 24.833           ~ 44 0
4 PSR B0052+51 Psr 00 55 45.3981 +51 17 24.601           ~ 52 0
5 PSR B0136+57 Psr 01 39 19.744 +58 14 31.73     13.41     ~ 163 0
6 PSR B0138+59 Psr 01 41 39.938 +60 09 32.30     12.85     ~ 120 0
7 PSR B0144+59 Psr 01 47 44.6434 +59 22 03.284           ~ 69 0
8 PSR B0148-06 Psr 01 51 22.71800 -06 35 02.9800           ~ 112 0
9 PSR B0301+19 Psr 03 04 33.115 +19 32 51.40           ~ 247 0
10 PSR B0320+39 Psr 03 23 26.6619 +39 44 52.403           ~ 139 0
11 PSR B0329+54 Psr 03 32 59.3370698592 +54 34 45.028206408           ~ 690 1
12 PSR B0450+55 Psr 04 54 07.709 +55 43 41.51           ~ 174 0
13 PSR B0523+11 Psr 05 25 56.49800 +11 15 18.8000           ~ 125 1
14 PSR B0525+21 Psr 05 28 52.308 +22 00 01.00     14.30     ~ 370 0
15 PSR B0540+23 Psr 05 43 09.65 +23 29 06.1     14.40     ~ 278 0
16 PSR B0609+37 Psr 06 12 44.087 +37 21 40.20           ~ 62 0
17 PSR B0621-04 Psr 06 24 20.02500 -04 24 50.5600           ~ 78 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 J0633+1746 Psr 06 33 54.153 +17 46 12.91           ~ 1308 0
21 PSR B0727-18 Psr 07 29 32.2900 -18 36 42.210           ~ 102 0
22 PSR B0740-28 Psr 07 42 49.0730 -28 22 43.510           ~ 445 0
23 PSR B0751+32 Psr 07 54 40.688 +32 31 56.20           ~ 88 0
24 PSR B0809+74 Psr 08 14 59.500 +74 29 05.70           ~ 425 0
25 PSR J0815+09 Psr 08 15 08.78 +09 39 50.7           ~ 42 0
26 PSR B0818-13 Psr 08 20 26.40700 -13 50 56.3200           ~ 229 0
27 PSR J0823+0159 Psr 08 23 09.78731 +01 59 12.6003           DA 244 0
28 PSR B0823+26 Psr 08 26 51.5068 +26 37 21.297           ~ 541 1
29 PSR B0826-34 Psr 08 28 16.6 -34 17 07           ~ 167 0
30 PSR B0834+06 Psr 08 37 05.64620 +06 10 15.8700           ~ 472 0
31 PSR B0919+06 Psr 09 22 13.85000 +06 38 19.0000           ~ 329 1
32 PSR B0940+16 Psr 09 43 30.10 +16 31 37.0           ~ 79 0
33 PSR B0943+10 Psr 09 46 07.31 +09 51 57.3           ~ 364 1
34 PSR B1039-19 Psr 10 41 36.19100 -19 42 13.7000           ~ 80 0
35 PSR B1112+50 Psr 11 15 38.400 +50 30 12.29           ~ 154 0
36 PSR B1133+16 Psr 11 36 03.09460 +15 51 15.9000           ~ 715 0
37 PSR B1237+25 Psr 12 39 40.386 +24 53 49.87           ~ 497 1
38 PSR B1508+55 Psr 15 09 25.674 +55 31 32.90           ~ 322 1
39 PSR B1530+27 Psr 15 32 10.3646 +27 45 49.623           ~ 122 0
40 PSR B1540-06 Psr 15 43 30.1373 -06 20 45.332           ~ 131 1
41 PSR B1541+09 Psr 15 43 38.82000 +09 29 16.4000           ~ 215 1
42 PSR B1604-00 Psr 16 07 12.078 -00 32 40.98           ~ 228 1
43 PSR B1612+07 Psr 16 14 40.906 +07 37 31.00           ~ 101 0
44 PSR B1642-03 Psr 16 45 02.0330 -03 17 57.200           ~ 394 0
45 PSR J1650-1654 Psr 16 50 27.1694 -16 54 42.282           ~ 27 0
46 PSR B1702-19 Psr 17 05 36.09300 -19 06 39.2000           ~ 191 1
47 PSR B1717-29 Psr 17 20 34.13100 -29 33 14.0000           ~ 80 0
48 PSR B1737+13 Psr 17 40 07.3455 +13 11 56.690           ~ 191 0
49 PSR B1738-08 Psr 17 41 22.5629 -08 40 31.711           ~ 98 0
50 PSR B1753+52 Psr 17 54 22.9068 +52 01 12.244           ~ 40 0
51 PSR B1804-08 Psr 18 07 38.02590 -08 47 43.2800           ~ 139 0
52 PSR B1818-04 Psr 18 20 52.5920 -04 27 37.120           ~ 230 0
53 PSR B1819-22 Psr 18 22 58.95000 -22 56 29.0000           ~ 123 0
54 PSR B1822-09 Psr 18 25 30.62000 -09 35 22.0000           ~ 382 0
55 PSR B1827-11.6 Psr 18 30 01.78700 -11 35 27.0000           ~ 22 0
56 PSR B1839+56 Psr 18 40 44.5372 +56 40 54.852           ~ 109 1
57 PSR B1839-04 Psr 18 42 26.4642900744 -04 00 00.516985452           ~ 81 0
58 PSR B1841-04 Psr 18 44 33.44600 -04 33 12.5000           ~ 46 1
59 PSR B1844-04 Psr 18 47 22.8222581784 -04 02 13.031112264           ~ 125 0
60 PSR B1845-01 Psr 18 48 23.59600 -01 23 58.4800           ~ 154 0
61 PSR B1846-06 Psr 18 49 06.46470 -06 37 06.9100           ~ 74 0
62 PSR B1857-26 Psr 19 00 47.54200 -26 00 44.8000           ~ 195 1
63 PSR B1859+03 Psr 19 01 31.7700 +03 31 04.960           ~ 156 0
64 PSR J1901-0906 Psr 19 01 53.00700 -09 06 10.9000           ~ 55 0
65 PSR B1900+01 Psr 19 03 29.9860 +01 35 38.530           ~ 133 0
66 PSR B1911-04 Psr 19 13 54.16240 -04 40 47.5600           ~ 192 0
67 PSR J1916+07 Psr 19 16 51.5 +07 48 00           ~ 14 0
68 PSR B1914+13 Psr 19 16 58.67000 +13 12 50.0000           ~ 99 0
69 PSR B1917+00 Psr 19 19 50.67000 +00 21 39.8000           ~ 120 0
70 PSR B1919+21 Psr 19 21 44.815 +21 53 02.25           ~ 411 0
71 PSR B1923+04 Psr 19 26 24.47200 +04 31 31.5400           ~ 75 0
72 PSR B1924+16 Psr 19 26 45.322 +16 48 32.78           ~ 90 0
73 PSR B1929+10 Psr 19 32 14.0570 +10 59 33.380           ~ 801 0
74 PSR B1933+16 Psr 19 35 47.7011639352 +16 16 40.034899524           ~ 328 1
75 PSR B1937-26 Psr 19 41 00.41690 -26 02 05.8840           ~ 84 0
76 PSR B1942-00 Psr 19 45 28.33000 -00 40 59.0000           ~ 65 0
77 PSR B1944+17 Psr 19 46 53.044 +18 05 41.24           ~ 252 0
78 PSR B1946+35 Psr 19 48 25.0067 +35 40 11.057           ~ 180 0
79 PSR B1952+29 Psr 19 54 22.5107 +29 23 16.150           ~ 149 0
80 PSR B1953+50 Psr 19 55 18.7637 +50 59 55.292           ~ 90 0
81 PSR B2000+40 Psr 20 02 44.030 +40 50 53.91           ~ 53 0
82 PSR J2007+0910 Psr 20 07 58.10 +09 10 12.9           ~ 14 0
83 PSR B2011+38 Psr 20 13 10.367 +38 45 43.31           ~ 78 0
84 PSR B2016+28 Psr 20 18 03.8999255016 +28 39 54.940329468           ~ 374 0
85 PSR B2020+28 Psr 20 22 37.0671 +28 54 23.104           ~ 330 1
86 PSR B2021+51 Psr 20 22 49.8730 +51 54 50.233           ~ 288 1
87 PSR B2043-04 Psr 20 46 00.17600 -04 21 26.3000           ~ 87 0
88 PSR B2044+15 Psr 20 46 39.33600 +15 40 33.6000           ~ 109 0
89 PSR B2045-16 Psr 20 48 35.74000 -16 16 45.0000           ~ 344 0
90 PSR B2053+36 Psr 20 55 31.3552 +36 30 21.489           ~ 103 0
91 PSR B2106+44 Psr 21 08 20.57 +44 41 49.4           ~ 71 1
92 PSR B2110+27 Psr 21 13 04.3506 +27 54 01.160           ~ 115 0
93 PSR B2111+46 Psr 21 13 24.3295 +46 44 08.844           ~ 226 1
94 PSR B2148+63 Psr 21 49 58.7033 +63 29 44.277           ~ 96 0
95 PSR B2154+40 Psr 21 57 01.840 +40 17 45.89           ~ 155 0
96 PSR B2255+58 Psr 22 57 57.744 +59 09 14.83     12.59     ~ 96 0
97 PSR B2303+30 Psr 23 05 58.3212 +31 00 01.281           ~ 216 0
98 PSR B2310+42 Psr 23 13 08.5976 +42 53 12.987           ~ 147 0
99 PSR B2319+60 Psr 23 21 55.213 +60 24 30.71     13.80     ~ 200 0
100 PSR B2324+60 Psr 23 26 58.6970 +61 13 36.468           ~ 65 0
101 PSR B2327-20 Psr 23 30 26.98600 -20 05 29.7500           ~ 133 0
102 PSR J2347-0612 Psr 23 46 50.54000 -06 10 01.0400           ~ 68 0
103 PSR B2351+61 Psr 23 54 04.7830 +61 55 46.845           ~ 102 0

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