2021ApJ...912..124B

Query : 2021ApJ...912..124B

2021ApJ...912..124B - Astrophys. J., 912, 124-124 (2021/May-2)

A deep Chandra X-Ray Observatory study of the millisecond pulsar population in the globular cluster Terzan 5.

BOGDANOV S., BAHRAMIAN A., HEINKE C.O., FREIRE P.C.C., HESSELS J.W.T., RANSOM S.M. and STAIRS I.H.

Abstract (from CDS):

We present an analysis of 745.8 ks of archival Chandra X-Ray Observatory Advanced CCD Imaging Spectrometer data accumulated between 2000 and 2016 of the millisecond pulsar (MSP) population in the rich Galactic globular cluster Terzan 5. Eight of the 38 MSPs with precise positions are found to have plausible X-ray source matches. Despite the deep exposure, the remaining MSPs are either marginally detected or have no obvious X-ray counterparts, which can be attributed to the typically soft thermal spectra of rotation-powered MSPs, which are strongly attenuated by the high intervening absorbing column (∼1022 cm–2) toward the cluster, and in some instances to severe source crowding/blending. For the "redback" MSP binaries PSR J1748-2446P and PSR J1748-2446ad and the "black widow" binary system PSR J1748-2446O, we find clear evidence for large-amplitude X-ray variability at the orbital period consistent with an intrabinary shock origin. The third redback MSP in the cluster, PSR J1748-2446A, shows order-of-magnitude variations in flux on timescales of years, possibly due to state transitions or intense flaring episodes from a magnetically active secondary star.

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

Journal keyword(s): Pulsars - Binary pulsars - Millisecond pulsars - Globular star clusters - X-ray astronomy - X-ray sources - X-ray identification - Astronomical methods - X-ray binary stars

Simbad objects: 68

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Number of rows : 68
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 PSR J0024-7204V Psr 00 24 05.359 -72 04 53.20           ~ 21 1
3 PSR B0021-72W Psr 00 24 06.0580 -72 04 49.088           ~ 87 1
4 1FGL J0212.3+5319 EB* 02 12 10.4774318712 +53 21 38.778250464   15.213 14.677 14.286   ~ 58 0
5 PSO J080.8044-25.5318 G 05 23 13.0748610986 -25 31 54.492620030           ~ 56 0
6 PSR J0744-2525 Psr 07 43 52.53 -25 25 30.4           ~ 30 0
7 PSR J0838-2827 Psr 08 38 30.15 -28 25 55.5           ~ 49 0
8 USNO-A2.0 0600-10964536 EB* 08 38 50.4163166184 -28 27 56.775234096   20.6   18.0   ~ 15 0
9 2FGL J0846.0+2820 gam 08 46 03 +28 20.9           ~ 24 0
10 CRTS J095527.8-394752 CV* 09 55 27.8212296096 -39 47 52.391744160     18.45     ~ 41 0
11 PSR J1023+0038 Psr 10 23 47.6841824712 +00 38 41.005893516     17.31     GV 470 0
12 PSR J1048+2339 Psr 10 48 43.4339582160 +23 39 53.577436140     19.47     ~ 82 0
13 XSS J12270-4859 Psr 12 27 58.7476831464 -48 53 42.824592960           ~ 321 0
14 PSR J1302-32 Psr 13 02 25.5358887 -32 58 36.833496           ~ 35 0
15 PSR J1306-4035 Psr 13 06 56.2808156568 -40 35 23.465480784   18.73   17.99 17.22 ~ 25 0
16 PSR J1417-4402 Psr 14 17 30.5732900514 -44 02 57.497992802     15.84     ~ 32 0
17 PSR J1431-4715 Psr 14 31 44.6313693632 -47 15 27.399549133           ~ 49 0
18 PSR J1622-0315 Psr 16 22 59.6408643864 -03 15 37.303251262           ~ 48 0
19 PSR J1628-3205 Psr 16 28 07.0056152 -32 05 48.966980           ~ 66 0
20 M 62 GlC 17 01 12.60 -30 06 44.5           ~ 668 0
21 PSR J1723-2837 Psr 17 23 23.1937506912 -28 37 57.210408048   16.81 15.77 15.71   ~ 105 0
22 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
23 PSR J1740-5340 Psr 17 40 44.589 -53 40 40.90   17.43   16.25   ~ 157 2
24 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
25 PSR J1748-2446al Psr 17 48.0 -24 46           ~ 2 0
26 PSR B1744-24A Psr 17 48 02.249 -24 46 37.65           ~ 235 0
27 PSR J1748-2446E Psr 17 48 03.411 -24 46 35.59           ~ 21 0
28 PSR J1748-2446K Psr 17 48 03.938 -24 46 47.75           ~ 15 0
29 CXOU J174804.4-244648 LX? 17 48 04.418 -24 46 48.78           ~ 2 0
30 PSR J1748-2446C Psr 17 48 04.534 -24 46 34.70           ~ 24 0
31 CXOGlb J174804.5-244641 LP* 17 48 04.606 -24 46 42.53         14.879 ~ 9 0
32 [HWC2006] CX 19 X 17 48 04.625 -24 46 45.32           ~ 3 0
33 CXOU J174804.6-244645 LX? 17 48 04.633 -24 46 46.01           ~ 6 0
34 CXOU J174804.6-244648 LX? 17 48 04.677 -24 46 48.74           ~ 2 0
35 PSR J1748-2446O Psr 17 48 04.682 -24 46 51.27           ~ 25 0
36 PSR J1748-2446L Psr 17 48 04.726 -24 46 35.88           ~ 15 0
37 PSR J1748-2446ae Psr 17 48 04.8 -24 46 45           ~ 12 0
38 [HWC2006] CX 9 X 17 48 04.823 -24 46 44.81           ~ 7 0
39 IGR J17480-2446 LXB 17 48 04.831 -24 46 48.87           ~ 204 0
40 PSR J1748-2446H Psr 17 48 04.9 -24 46 45           ~ 14 0
41 PSR J1748-2446Q Psr 17 48 04.9 -24 46 45           ~ 17 0
42 PSR J1748-2446J Psr 17 48 04.9 -24 46 45           ~ 30 0
43 PSR J1748-2446X Psr 17 48 04.9 -24 46 45           ~ 18 0
44 PSR J1748-2446ad Psr 17 48 04.9 -24 46 04           ~ 141 1
45 PSR J1748-2446N Psr 17 48 04.914 -24 46 53.75           ~ 24 0
46 PSR J1748-2446Z Psr 17 48 04.957 -24 46 45.93           ~ 16 0
47 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
48 PSR J1748-2446P Psr 17 48 05.034 -24 46 41.29           ~ 26 0
49 PSR J1748-2446F Psr 17 48 05.087 -24 46 38.24           ~ 15 0
50 PSR J1748-2446V Psr 17 48 05.102 -24 46 34.49           ~ 19 0
51 NAME TER 5 X-1 LXB 17 48 05.225 -24 46 47.66           ~ 229 1
52 MAXI J1747-249 LXB 17 48 05.3 -24 46 37           ~ 48 0
53 PSR J1748-2446an Psr 17 48 05.65898 -24 46 42.0300           ~ 3 0
54 [BSM2020b] CXOU J174805.66-244642.0 X 17 48 05.66 -24 46 42.0           ~ 1 0
55 PSR J1748-2446D Psr 17 48 05.913 -24 46 05.83           ~ 15 0
56 NGC 6440 GlC 17 48 52.67 -20 21 34.5           ~ 592 0
57 PSR J1816+4510 Psr 18 16 35.9342957160 +45 10 33.917516328           ~ 126 0
58 PSR J1824-2452A Psr 18 24 32.009 -24 52 11.10           ~ 529 2
59 IGR J18245-2452 LXB 18 24 32.50 -24 52 07.8           ~ 253 0
60 PSR J1824-2452H Psr 18 24 32.8 -24 52 11           ~ 29 0
61 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
62 PSR J1908+2105 Psr 19 09 32.0 +21 02 56           ~ 30 0
63 PSR J1959+2048 Psr 19 59 36.7643141520 +20 48 14.896407996   21.08 20.16 19.53 18.79 G: 854 3
64 PSR J2039-5617 Psr 20 39 34.9609502672 -56 17 09.033104197           ~ 84 0
65 PSR J2129-04 Psr 21 29 45.0469239408 -04 29 06.973600236     16.68     ~ 100 0
66 PSR J2215+51 Psr 22 15 32.6869149432 +51 35 36.400854912           ~ 176 0
67 PSR J2333-5526 Psr 23 33 08.6 -55 27 50           ~ 32 0
68 PSR J2339-0533 Psr 23 39 38.7412778376 -05 33 05.108592528     18.48     ~ 149 0

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