2003A&A...404.1023B

Query : 2003A&A...404.1023B

2003A&A...404.1023B - Astronomy and Astrophysics, volume 4041023-1032 (2003/6-4)

A puzzling paucity of double peaked X-ray pulsars.

BULIK T., GONDEK-ROSINSKA D., SANTANGELO A., MIHARA T., FINGER M. and CEMELJIC M.

Abstract (from CDS):

Accretion powered pulsars exhibit a variety of lightcurves. In this paper we propose to classify the observed lightcurves as single or double pulsed. We analyze the lightcurves of 89 accretion powered pulsars and assign them to these classes. We present three datasets: first in which the classification can be easily done, second for which the classification is more difficult and not certain, and third for which we were unable to classify the pulsar because of a lack of published data. We analyze a simple model in which the angles between the magnetic and rotation axis β, and between the rotation axis and the line of sight θ are random, and show that it is inconsistent with the data. We also present a model in which the angle between the magnetic axis and the rotation axis is restricted and compare it with the data. This leads to an upper limit on the angle β<50°. We conclude that there must be a mechanism that leads to alignment of the magnetic and spin axis in X-ray pulsars.

Abstract Copyright: ∼

Journal keyword(s): X-rays: star - stars: neutron

CDS comments: Table 3 : 3U 1239-59 = 3A 1239-59 in Simbad.

Simbad objects: 85

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Number of rows : 85
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 RX J0049.0-7250 HXB 00 49 03.35 -72 50 52.4   17.01 16.898   16.686 B3:V 56 0
2 RX J0049.2-7311 HXB 00 49 13.6255324536 -73 11 37.869710892   16.52 16.555   16.320 B1e 50 1
3 LIN 139 HXB 00 49 42.0078068952 -73 23 14.676382752 14.09 15.00 14.98   14.70 O9.5-B0.5III-V 80 0
4 V* DZ Tuc HXB 00 50 44.7079466208 -73 16 05.430164196 14.46 15.37 15.396   15.225 B0-B0.5V 82 0
5 [MA93] 413 HXB 00 50 56.9992401408 -72 13 34.582439136   14.97 15.05     B0.5III-V 66 0
6 AzV 102 HXB 00 51 53.1358981896 -72 31 48.721904580 13.66 14.79 14.38   14.40 O9.7V:ne 80 0
7 LIN 203 HXB 00 52 13.9956976512 -73 19 18.812945496   14.66 14.67   14.534 O9.5IIIe/B0Ve 93 0
8 LIN 221 HXB 00 52 55.2656173752 -71 58 06.287817144 14.37 15.47 15.53   15.34 B0-B1III-V 51 0
9 X SMC X-2 HXB 00 54 33.43 -73 41 01.3 13.77 16.40 16.38   14.67 O9.5III-V 143 0
10 [MA93] 810 HXB 00 54 56.1754603176 -72 26 47.859057060 14.17 15.24 15.28   15.327 O9V 79 0
11 [MA93] 1036 HXB 00 57 49.5745148088 -72 02 35.873596896   15.52 15.64     B0-B2III-V 57 0
12 RX J0059.2-7138 HXB 00 59 12.7444006824 -71 38 44.962383408   14.07 14.01 14.36   B1-B1.5II-III 90 0
13 [MA93] 1367 HXB 01 03 13.9173060552 -72 09 14.258500452   14.70 14.79 15.0   B0.5IV-V 97 1
14 RX J0105.1-7211 HXB 01 05 09.941 -72 11 47.00   15.62 15.63 18.3   B1-B2III-V 54 1
15 RX J0111.2-7317 HXB 01 11 08.5770101712 -73 16 46.308129384 14.40 15.42 15.52   15.29 B0.5-1Ve 76 0
16 SK 160 HXB 01 17 05.1457288392 -73 26 36.014808156 12.23 13.00 13.15   13.17 O9.7Ia+ 918 0
17 [MA93] 1845 HXB 01 17 40.1630558064 -73 30 50.523690888 13.30 14.14 14.18   14.09 B1-3(II)e 63 0
18 V* V662 Cas HXB 01 18 02.6976641952 +65 17 29.829200388 12.27 11.99 11.14 10.33 9.58 B1Iae 289 0
19 V* V635 Cas HXB 01 18 31.9704955824 +63 44 33.072603144 17.05 16.64 15.19 14.34 13.22 B0.2Ve 791 0
20 PSR J0146+6145 Psr 01 46 22.21 +61 45 03.8   28.100 25.620     ~ 613 0
21 EM* GGA 104 HXB 01 47 00.2124077208 +61 21 23.663788056 11.76 12.09 11.366 11.00 10.52 B1IIIe 205 0
22 V* BQ Cam HXB 03 34 59.9116110096 +53 10 23.296879776   17.16 15.42 14.26 13.04 O8.5Ve 525 1
23 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 1037 0
24 LS V +44 17 HXB 04 40 59.3296237272 +44 31 49.258049376 11.02 11.42 10.73 10.28 9.76 B0.2Ve 176 0
25 CAL E HXB 05 02 51.7474501824 -66 26 26.907946008   14.12 14.22 14.359   O9.5/B0III/Ve 37 0
26 RX J0529.7-6556 HXB 05 29 47.8546718664 -65 56 43.592426736 13.761 14.477 14.594   14.741 B0.5Ve 36 0
27 RX J0531.2-6609 HXB 05 31 13.3008 -66 07 05.006     14.4     B0.7Ve 55 1
28 X LMC X-4 HXB 05 32 49.5556042296 -66 22 13.202721768   13.9 14.0 14.290   O8III 714 0
29 1A 0535-668 HXB 05 35 40.9970566152 -66 51 53.547559416       15.036 15.138 B2IIIe 302 0
30 HD 245770 HXB 05 38 54.5748918624 +26 18 56.836952784 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 1045 0
31 RX J0544.1-7100 HXB 05 44 05.2035514728 -71 00 50.782002660 14.598 15.292 15.235   15.220 B0Ve 26 0
32 EM* GGA 401 HXB 06 35 18.2797640568 +05 33 06.274961892   13.769 12.837 12.512   B2V-B1IIIe 60 0
33 HD 49798 HXB 06 48 04.7001531360 -44 18 58.436036028 6.758 8.017 8.287 8.391 8.543 sdO6 339 0
34 RX J0720.4-3125 N* 07 20 24.961 -31 25 50.21   26.1   27.0   ~ 316 0
35 V* V441 Pup HXB 07 28 53.5788273168 -26 06 28.897118208 11.27 12.29 11.83 11.53   O5Ve 91 0
36 V* V572 Pup HXB 08 12 28.3575205680 -31 14 52.138451400 12.14 13.03 12.74 12.44   B0.2IVe 76 0
37 2MASS J08355545-4311081 HXB 08 35 55.4597566608 -43 11 08.193290244     20.4     B0-2III-Ve 111 0
38 V* GP Vel HXB 09 02 06.8608812864 -40 33 16.899168060 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1588 0
39 GRO J1008-571 HXB 10 09 46.9642314696 -58 17 35.603851848       14.63   B0e 269 0
40 THA 35-II-42 WR* 10 25 56.5024585224 -57 48 43.519215708   14.168 12.661 12.102   WN5ha/O3+O3Vz((f*)) 105 0
41 LS 1698 HXB 10 37 35.3145142200 -56 47 55.869594756   12.00 11.48 11.38   B0III-Ve 120 0
42 2E 2336 HXB 10 50 08.93 -59 53 19.9           Be 419 0
43 WRAY 15-793 HXB 11 20 57.1736884968 -61 55 00.166078020 12.81 13.06 12.12     O9.5III/Ve 222 0
44 V* V779 Cen HXB 11 21 15.0920532528 -60 37 25.630264596   14.4 12.27     O9III/Veq 1159 0
45 1E 1145.1-6141 HXB 11 47 28.5598257552 -61 57 13.426997544   13.08       B2Iae 158 0
46 HD 102567 HXB 11 48 00.0214464120 -62 12 24.902384760 8.24 9.06 9.00 9.62   B1Vne 335 0
47 V* BP Cru HXB 12 26 37.5605188992 -62 46 13.261044684   12.482 10.803 10.304   B1Ia+ 731 0
48 1H 1238-599 HXB 12 42 01.7 -60 12 06     13.80     ~ 33 0
49 V* V850 Cen HXB 13 01 17.0968941216 -61 36 06.637549788   15.6 14.40     B2Vne 361 0
50 SAX J1324.4-6200 HXB 13 24 26.65128 -62 01 19.1280           Be? 28 0
51 4U 1416-62 HXB 14 21 12.1560262026 -62 41 56.089360085   17.9 17.2     B1e 171 0
52 SAX J1452.8-5949 HXB 14 52 52.70 -59 49 08.1           Be? 23 0
53 V* QV Nor HXB 15 42 23.3633146128 -52 23 09.577395960   16.3 14.5     B0.2Ia 455 1
54 2MASS J15574819-5424541 HXB 15 57 48.3340005883 -54 24 54.353062409           B1-2V 119 0
55 V* KZ TrA LXB 16 32 16.79 -67 27 39.3 17.40 18.60 18.5     ~ 626 1
56 V* HZ Her LXB 16 57 49.8110126616 +35 20 32.486555472 11.90 14.89 13.63 13.88   B3/6ep 2172 0
57 AX J1700-419 HXB 17 00 04.3592083584 -41 58 05.584329854           Be? 26 0
58 2MASS J17004888-4139214 HXB 17 00 48.884 -41 39 21.46           Ofpe/WN9 272 0
59 PSR J1708-4008 Psr 17 08 46.1 -40 08 56           ~ 315 0
60 2MASS J17251139-3616575 HXB 17 25 11.392 -36 16 57.53     14.30     B0-1Ia 140 2
61 V* V2116 Oph Sy* 17 32 02.1532435416 -24 44 44.129169096   20.78 18.4     M6IIIe 719 1
62 3FHL J1746.2-2852 LXB 17 44 33.09 -28 44 27.0           ~ 559 0
63 AX J1749.2-2725 HXB 17 49 12.28 -27 25 37.4           B3V 39 0
64 AX J1749.1-2639 HXB 17 49 12.969 -26 38 38.93           Be? 77 1
65 SAX J1808.4-3658 LXB 18 08 27.58 -36 58 43.9           ~ 1051 0
66 2MASS J18203009-1434228 HXB 18 20 30.09648 -14 34 22.8828           B0-2IV-Ve 71 1
67 V* V691 CrA LXB 18 25 46.8185061768 -37 06 18.529336656 14.30 15.20 15.1     ~ 461 0
68 X Sct X-1 HXB 18 35 25.8244223112 -07 36 50.416365528           ~ 89 0
69 RX J1838.4-0301 XB* 18 38 27.02 -03 01 14.4           ~ 29 0
70 AX J1844.8-0258 HXB 18 44 53 -02 56.0           ~ 126 0
71 Ginga 1843+009 HXB 18 45 36.8356591776 +00 51 47.437790184     20.6   16.616 B0-2IV-Ve 117 0
72 4U 1850-03 HXB 18 48 17.7 -02 25 13           Be? 114 1
73 XTE J1855-026 HXB 18 55 30.4058947392 -02 36 16.737653700   16.451 14.512 14.056   B0Iaep 104 0
74 XTE J1858+034 HXB 18 58 35.6252850353 +03 26 10.535956648           B?e 94 0
75 2MASS J19044747+0902419 HXB 19 04 47.4654450192 +09 02 41.756177328           Be? 32 0
76 4U 1907+09 HXB 19 09 38.0514267264 +09 49 47.270139132   19.41 16.35 15.570 12.53 O9.5Iab 362 0
77 XTE J1946+274 HXB 19 45 39.3568693200 +27 21 55.501637040   18.76 16.92 15.62 14.38 B0-1IV-Ve 138 0
78 GRO J2014+34 XB* 19 54 +30.1           ~ 33 1
79 V* V2306 Cyg XB* 19 58 14.4693586728 +32 32 42.003103200 15.16 15.94 15.71 15.759   ~ 74 0
80 V* V2246 Cyg HXB 20 32 15.2749858128 +37 38 14.843024844   22.16 19.41 17.32 15.18 B0Ve 480 0
81 GRO J2058+42 HXB 20 58 47.5371521256 +41 46 37.180486128   15.97 14.74 14.74 13.35 O9.5-B0IV-Ve 95 0
82 SAX J2103.5+4545 HXB 21 03 35.7100848936 +45 45 05.568751692   15.34 14.20 13.991 12.75 B0Ve 197 0
83 V* V490 Cep HXB 21 39 30.6903047304 +56 59 10.421969280   15.407 14.441 14.119   B1-B2Ve 186 0
84 BD+53 2790 HXB 22 07 56.2366802328 +54 31 06.408879888 9.4 10.11 9.84 9.64 9.43 O9.5Vep 233 0
85 2E 4673 HXB 23 01 08.14 +58 52 44.5           ~ 673 1

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