2016ApJ...829...30C


Query : 2016ApJ...829...30C

2016ApJ...829...30C - Astrophys. J., 829, 30-30 (2016/September-3)

Tracing the lowest propeller line in Magellanic high-mass X-ray binaries.

CHRISTODOULOU D.M., LAYCOCK S.G.T., YANG J. and FINGERMAN S.

Abstract (from CDS):

We have combined the published observations of high-mass X-ray binary (HMXB) pulsars in the Magellanic Clouds with a new processing of the complete archival data sets from the XMM-Newton and Chandra observatories in an attempt to trace the lowest propeller line below which accretion to polar caps is inhibited by the centrifugal force and the pulsations from the most weakly magnetized pulsars cease. Previously published data reveal that some of the faster-spinning pulsars with spin periods of P_S < 12 s, detected at relatively low X-ray luminosities L_X, appear to define such a line in the PS–LX diagram, characterized by a magnetic moment of µ=3 x 10^29 G cm^3. This value implies the presence of surface magnetic fields of B >= 3 x 10^11 G in the compact objects of this class. Only a few quiescent HMXBs are found below the propeller line: LXP4.40 and SXP4.78, for which XMM-Newton and Chandra null detections respectively placed firm upper limits on their X-ray fluxes in deep quiescence; and A0538-66, for which many sub-Eddington detections have never measured any pulsations. On the other hand, the data from the XMM-Newton and Chandra archives show clearly that, during routine observation cycles, several sources have been detected below the propeller line in extremely faint, nonpulsating states that can be understood as the result of weak magnetospheric emission when accretion to the poles is centrifugally stalled or severely diminished. We also pay attention to the anomalous X-ray pulsar CXOU J010043.1-721134 that was reported in HMXB surveys. Its pulsations and locations near and above the propeller line indicate that this pulsar could be accreting from a fossil disk.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): accretion, accretion disks - Magellanic Clouds - stars: magnetic field - stars: neutron - X-rays: binaries - X-rays: binaries

CDS comments: LXP 28.8, LXP 4.40, LXP 61.6 and LXP 69.5 are not in SIMBAD.

Simbad objects: 38

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Number of rows : 38
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 IC 10 G 00 20 23.16 +59 17 34.7   13.6 9.5     ~ 1082 0
2 AX J0043-737 X 00 42 39.9 -73 40 25           ~ 14 0
3 SXP 11.87 HXB 00 48 13.47 -73 22 03.1   14.54 14.66     ~ 13 0
4 SXP 25.5 HXB 00 48 14.1209478096 -73 10 03.933642936 15.06 15.56 15.30   15.51 B1.5e 27 1
5 RX J0049.0-7250 HXB 00 49 03.3 -72 50 52   17.01 16.92   16.68 B3:V 49 0
6 SXP 18.3 HXB 00 49 11.4583157496 -72 49 37.499240568 15.16 15.80 15.61 15.42 15.525 ~ 39 0
7 RX J0049.2-7311 HXB 00 49 13.6255324536 -73 11 37.869710892   16.52 16.51   16.21 B1e 46 1
8 [MA93] 413 HXB 00 50 56.9992401408 -72 13 34.582439136   14.97 15.05     B0.5III-V 58 0
9 SXP 4.78 HXB 00 51 38.7742234656 -72 17 04.796861748 14.63 15.66 15.63   15.44 B0V-B1Ve 48 0
10 AzV 102 HXB 00 51 53.1358981896 -72 31 48.721904580 13.66 14.79 14.38   14.40 B0-5(II) 70 0
11 LIN 198 HXB 00 52 05.6251611744 -72 26 04.228773036 13.86 14.91 14.91 14.91   B0-5(II)e 152 0
12 SXP 82.4 HXB 00 52 08.9591015832 -72 38 03.307691544 14.33 15.15 15.23   14.83 B1-5(II)e 36 0
13 LIN 203 HXB 00 52 13.9956976512 -73 19 18.812945496   14.66 14.67   14.534 O9.5IIIe/B0Ve 85 0
14 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10530 1
15 RX J0053.9-7226 HXB 00 53 55.181 -72 26 44.88   14.65 14.72     B1III 91 0
16 X SMC X-2 HXB 00 54 33.43 -73 41 01.3 13.77 16.40 16.38   14.67 O9.5III-V 123 0
17 CXOU J005437.1-722637 X 00 54 37.1 -72 26 37           ~ 2 0
18 [MA93] 798 HXB 00 54 46.3702539288 -72 25 22.795778784 14.39 15.50 15.36   15.25 B1e 22 0
19 [MA93] 810 HXB 00 54 56.1754603176 -72 26 47.859057060 14.17 15.24 15.28   15.11 O9V 71 0
20 SXP 5.05 HXB 00 57 02.1884332608 -72 25 55.431870600 14.77 15.76 15.96   15.75 B0.5e 33 0
21 SXP 7.92 HXB 00 57 58.4 -72 22 30           ~ 18 0
22 RX J0059.2-7138 HXB 00 59 12.7444006824 -71 38 44.962383408   14.07 14.01 14.36   B1-B1.5II-III 82 0
23 PSR J0100-7211 Psr 01 00 42.86 -72 11 33.3   17.69 17.82     B3V 92 0
24 SXP 6.85 HXB 01 02 53.3180253744 -72 44 35.166214716   14.51 14.59     O9.5-B0IV-V 59 0
25 SXP 11.5 HXB 01 04 42.28 -72 54 03.7   14.81 14.81     O8.5-9.5IIIe 31 1
26 RX J0105.1-7211 HXB 01 05 09.941 -72 11 47.00   15.62 15.63 18.3   B1-B2III-V 52 1
27 SXP 65.8 HXB 01 07 12.6098206008 -72 35 33.884245680 14.72 15.52 15.64 15.5 15.73 B1-B1.5II-III 23 0
28 RX J0111.2-7317 HXB 01 11 08.5770101712 -73 16 46.308129384 14.40 15.42 15.52   15.29 B0.5-1Ve 71 0
29 SK 160 HXB 01 17 05.1457288392 -73 26 36.014808156 12.23 13.00 13.15   13.17 O9.7Ia+ 840 0
30 [MA93] 1845 HXB 01 17 40.1630558064 -73 30 50.523690888 13.30 14.14 14.18   14.09 B1-3(II)e 53 0
31 IGR J01572-7259 HXB 01 57 16.2115944744 -72 58 32.493128592   15.5   15.5   ~ 20 0
32 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6555 1
33 V* BQ Cam HXB 03 34 59.9116110096 +53 10 23.296879776   17.16 15.42 14.26 13.04 O8.5Ve 449 1
34 [HP99] 946 Be* 05 20 30.9009 -69 31 54.999   14.41 14.40     O8e 60 0
35 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16507 1
36 PSR B0525-66 Psr 05 26 00.7 -66 04 35           ~ 534 1
37 RX J0535.6-6651 HXB 05 35 40.9970566152 -66 51 53.547559416   13.7 13.8     B0.5IIIe 282 0
38 IGR J05414-6858 HXB 05 41 26.0 -68 58 23           ~ 15 0

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2023.01.27-15:03:30

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