Robert Makemson Guide to Astronomy in Jacksonville

Neutron Stars and Pulsars

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Cluster/Pulsar Offset
(arcmin)
Period (a)
(ms)
dP/dt (a,b)
(10−20)
DM
(cm−3 pc)
Orbital Period
(days)
x
(s)
Eccentricity mc (c)
(M)
Notes References
47 Tuc (NGC 104)
rc = 0.44 rh = 2.79 rt = 47.25 l = 305.90 b = −44.89 D = 4.5



J0023−7204C 1.21 5.75678 −4.9850(6) 24.599(2) i i i i mlj+90,rlm+95
J0024−7204D 0.68 5.35757 −0.3429(7) 24.729(2) i i i i mlr+91,rlm+95
J0024−7205E 0.65 3.53633 +9.8510(6) 24.230(2) 2.25684 1.9818423(8) 0.0003152(9) 0.18 mlr+91,rlm+95,fcl+01
J0024−7204F 0.19 2.62358 +6.4500(4) 24.379(5) i i i i mlr+91,fcl+01
J0024−7204G 0.29 4.04038 −4.215(2) 24.441(5) i i i i mlr+91,fcl+01
J0024−7204H 0.77 3.21034 −0.183(1) 24.36(3) 2.35770 2.152813(3) 0.070560(3) 0.19 (i) mildly eccentric mlr+91,fcl+01,fck+03
J0024−7204I 0.29 3.48499 −4.587(2) 24.42(2) 0.22979 0.038447(2) < 0.0004 0.015 low-mass mlr+91,rlm+95,fcl+01
J0023−7203J 1.00 2.10063 −0.97922(9) 24.5848(9) 0.12066 0.0404022(2) < 0.00004 0.024 eclipsing, low-mass mlr+91,rlm+95,clf+00,fck+03
J0024−7204L 0.14 4.34617 −12.206(4) 24.38(5) i i i i mlr+91,fcl+01
J0023−7205M 1.05 3.67664 −3.844(3) 24.42(2) i i i i mlr+91,fcl+01
J0024−7204N 0.49 3.05395 −2.1870(9) 24.57(2) i i i i rlm+95,fcl+01
J0024−7204O 0.06 2.64334 +3.0354(9) 24.363(10) 0.13597 0.045151(2) < 0.00016 0.025 eclipsing, low-mass clf+00,fcl+01,fck+03
J0024−7204P * 3.64302 * 24.3 0.1472 0.0380 0.0 0.02 low-mass clf+00
J0024−7204Q 0.98 4.03318 +3.402(2) 24.29(2) 1.18908 1.462209(4) 0.000085(5) 0.21 clf+00,fcl+01
J0024−7204R * 3.48046 * 24.4 0.0662 0.0334 0.0 0.030 eclipsing, low-mass clf+00
J0024−7204S 0.19 2.83041 −12.054(2) 24.353(9) 1.20172 0.766270(3) 0.000394(7) 0.10 clf+00,fkl01,fck+03
J0024−7204T 0.34 7.58848 +29.37(1) 24.39(6) 1.12618 1.33850(2) 0.00040(2) 0.20 clf+00,fkl01,fcl+01
J0024−7203U 0.94 4.34283 +9.523(1) 24.335(4) 0.42911 0.526950(1) 0.000149(4) 0.14 clf+00,fcl+01,egh+01
J0024−7204V * 4.810 * 24.1 0.227(16)(g) 0.85(13)(g) 0.0 ? eclipsing? clf+00
J0024−7204W 0.08 2.35234 * 24.3 0.1330 0.2435 0.0 0.14 eclipsing clf+00,egc+02,bgb05
J0024−7204X * 4.771 * 24.0(2) * * * * lcf+03
J0024−7204Y * 2.19666(g) * 24.2(1)(g) 0.52194(g) 0.671759(g) 0.0 0.16 lcf+03
J0024−7204Z * 4.554 * 24.47(1) i i i i (g)
NGC 1851
rc = 0.06 rh = 0.52 rt = 11.70 l = 244.51 b = −35.04 D = 12.1



J0514−4002A 0.08 4.99058 +0.117(14) 52.1489(6) 18.78518 36.296588(9) 0.8879773(3) 1.1 (ii) eccentric, massive fgri04, frg07
M53 (NGC 5024)
rc = 0.36 rh = 1.11 rt = 21.75 l = 332.96 b = 79.76 D = 17.8



B1310+18 * 33.1632 * 24.0(1.5) 255.8(6) 84.2(7) 0.01 0.35 long orbit kapw91
M3 (NGC 5272)
rc = 0.55 rh = 1.12 rt = 38.19 l = 42.41 b = 78.71 D = 10.4



J1342+2822A * 2.545 * 26.5 * * * * hrs+07
J1342+2822B 0.14 2.389 +1.858 26.148(2) 1.41735 1.875655(2) 0.0 0.21 hrs+07
J1342+2822C * 2.166 * 26.5 * * * * needs confirmation hrs+07
J1342+2822D 0.23(12) 5.443 * 26.34(2) 128.752(5) 38.524(4) 0.0753(5) 0.21 long orbit,
mildly eccentric
hrs+07
M5 (NGC 5904)
rc = 0.42 rh = 2.11 rt = 12.07 l = 3.86 b = 46.80 D = 7.5



B1516+02A 0.50 5.55359 +4.122(6) 30.08(5) i i i i awkp97,fwbh08
B1516+02B 0.30 7.94694 −0.3306(12) 29.45(3) 6.85845 3.04856 0.137849(12) 0.13 (iii) mildly eccentric awkp97,fwbh08
J1518+0204C * 2.484 * 29.3 0.087 0.0573 0.0 0.038 eclipsing, low-mass hrs+07
J1518+0204D * 2.988 * 29.3 1.22 1.60 0.0 0.20 hrs+07
J1518+0204E * 3.182 * 29.3 1.10 1.15 0.0 0.15 hrs+07
NGC 5986
rc = 0.63 rh = 1.05 rt = 10.52 l = 337.02 b = 13.27 D = 10.4



J1546−3747A * 2.60567 * 92.17 1.34671 1.3833 0.0 0.18 lr11
M4 (NGC 6121)
rc = 0.83 rh = 3.65 rt = 32.49 l = 350.97 b = 15.97 D = 2.2



B1620−26 0.767 11.0758 −5.4693(3) 62.8633(5) 191.44281 64.809460(4) 0.02531545(12) 0.33 long orbit, triple
system with planet
lbb+88,ml88,tat+93,tacl99,srh+03
M13 (NGC 6205)
rc = 0.78 rh = 1.49 rt = 25.19 l = 59.01 b = 40.91 D = 7.7



B1639+36A * 10.3775 < 4.5 30.36(4) i i i i kapw91
B1639+36B * 3.52807 * 29.5(1.5) 1.25911 1.389(2) < 0.001 0.19 and92
J1641+3627C * 3.722 * 30.1 i i i i hrs+07
J1641+3627D * 3.118 * 30.6 0.591 0.924 0.0 0.18 hrs+07
J1641+3627E * 2.487 * 30.3 0.117(8) 0.037(4) 0.0 0.02 low-mass, eclipsing? hrs+07
M62 (NGC 6266)
rc = 0.18 rh = 1.23 rt = 8.97 l = 353.57 b = 7.32 D = 6.9



J1701−3006A 0.32 5.24157 −13.196(9) 115.03(4) 3.80595 3.483724(8) 0.000004 0.23 dlm+01,pdm+03, lfrj12
J1701−3006B 0.028 3.59385 −34.978(7) 113.44(4) 0.14455 0.252775(13) <0.00007 0.14 eclipsing pdm+03, lfrj12
J1701−3006C 0.175 7.61285 −6.378(22) 114.56(7) 0.21500 0.192880(12) < 0.00006 0.08 P, Pdot twice published pdm+03, lfrj12
J1701−3006D 0.200 3.41777 12.57(24) 114.224(11) 1.11790 0.9880 0.00045(2) 0.14 lfrj12
J1701−3006E 0.111 3.23374 31.03(27) 113.79(2) 0.15848 0.07016 0.0 0.035 eclipsing, low-mass lfrj12
J1701−3006F 0.041 2.294727 22.21(18) 113.29(3) 0.20549 0.0573 0.0 0.024 low-mass lfrj12
NGC 6342
rc = 0.05 rh = 0.88 rt = 14.86 l = 4.90 b = 9.73 D = 8.6



B1718−19 2.3 1004.04 +1.59(2)*10−15 71.0(2) 0.25827 0.3526(8) < 0.005 0.13 eclipsing, slow, young lbhb93,kkk+00
NGC 6397
rc = 0.05 rh = 2.33 rt = 15.81 l = 338.17 b = −11.96 D = 2.3



J1740−5340 0.917 3.65033 +16.8(7) 71.8(2) 1.35406 1.65284(7) < 0.0001 0.22 (iv) eclipsing dlm+01,dpm+01,fpds01
Terzan 5
rc = 0.18 rh = 0.83 rt = 9.84 l = 3.84 b = 1.69 D = 10.3



J1748−2446A 0.50 11.5632 −3.40(4) 242.1(2) 0.075646 0.11971(3) 0.0 0.10 eclipsing ljm+90,lmbm00,nat00
J1748−2446C 0.17 8.43610 −60.6(4) 237(1) i i i i lmbm00
J1748−2446D * 4.71398 * 243.83 i i i i ran01,rhs+05
J1748−2446E * 2.19780 * 236.84 60.06 23.6 0.02 0.25 long orbit rhs+05
J1748−2446F * 5.54014 * 239.18 i i i i rhs+05
J1748−2446G * 21.6719 * 237.57 i i i i rhs+05
J1748−2446H * 4.92589 * 238.13 i i i i rhs+05
J1748−2446I * 9.57019 * 238.73 1.328 1.818 0.428 0.24 (v) eccentric rhs+05
J1748−2446J * 80.3379 * 234.35 1.102 2.454 0.350 0.39 (vi) eccentric rhs+05
J1748−2446K * 2.96965 * 234.81 i i i i rhs+05
J1748−2446L * 2.24470 * 237.74 i i i i rhs+05
J1748−2446M * 3.56957 * 238.65 0.4431 0.596 0 0.16 rhs+05
J1748−2446N * 8.66690 * 238.47 0.3855 1.619 0.000045 0.56 rhs+05
J1748−2446O * 1.67663 * 236.38 0.2595 0.112 0 0.04 eclipsing, low-mass rhs+05
J1748−2446P * 1.72862 * 238.79 0.3626 1.272 0 0.44 eclipsing rhs+05
J1748−2446Q * 2.812 * 234.50 30.295 28.602 0.722 0.53 eccentric, massive rhs+05
J1748−2446R * 5.02854 * 237.60 i i i i rhs+05
J1748−2446S * 6.11664 * 236.26 i i i i rhs+05
J1748−2446T * 7.08491 * 237.70 i i i i rhs+05
J1748−2446U * 3.28914 * 235.46 3.57026 5.97248 0.60498 0.45 eccentric rhs+05
J1748−2446V * 2.07251 * 239.11 0.5036 0.567 0 0.14 rhs+05
J1748−2446W * 4.20518 * 239.14 4.877 5.869 0.015 0.34 rhs+05
J1748−2446X * 2.99926 * 240.03 4.99850 5.1071 0.3024 0.29 eccentric rhs+05
J1748−2446Y * 2.04816 * 239.11 1.16443 1.1785 0.00002 0.16 rhs+05
J1748−2446Z * 2.46259 * 238.85 3.48807 3.5304 0.7608 0.25 eccentric (g)
J1748−2446aa * 5.78804 * 237.42 i i i i (g)
J1748−2446ab * 5.11971 * 238.34 i i i i (g)
J1748−2446ac * 5.08691 * 238.72 i i i i (g)
J1748−2446ad * 1.39595 * 235.6 1.09443 1.1028 0 0.16 eclipsing, fastest
pulsar known
hrs+06
J1748−2446ae * 3.65859 * 238.75 0.17073 0.0406 0 0.019 low−mass (g)
J1748−2446af * 3.30434 * 237.34 i i i i (g)
J1748−2446ag * 4.44803 * 237.75 i i i i (g)
J1748−2446ah * 4.96515 * 237.75 i i i i (g)
J1748−2446ai * 21.22838 * 233.9 0.85088 2.8088 0.4400 0.57 eccentric, massive (g)
NGC 6440
rc = 0.13 rh = 0.58 rt = 6.31 l = 7.73 b = 3.80 D = 8.4



B1745−20 0.04 288.603 +0.39933(10)*10−15 219.4(2) i i i i slow, young lmd96,frb+08
J1748−2021B 0.07 16.7601 −32.913(16) 220.922(11) 20.55001 4.46699 0.57016 0.090 (vii) eccentric frb+08
J1748−2021C 0.45 6.22693 −5.984(16) 226.95(6) i i i i frb+08
J1748−2021D 0.55 13.4958 +58.678(16) 224.98(3) 0.28607 0.3972 0.00 0.14 eclipsing frb+08
J1748−2021E 0.13 16.2640 +31.24(4) 224.10(4) i i i i frb+08
J1748−2021F 0.09 3.79363 −1.055(18) 220.43(8) 9.83397 9.49757 0.0531 0.35 mildly eccentric frb+08
NGC 6441
rc = 0.11 rh = 0.64 rt = 8.00 l = 353.53 b = −5.01 D = 11.7



J1750−37A 0.21 111.608 +566.1(8) 233.82(3) 17.3343 24.439 0.71243 0.7 (viii) eccentric, massive
slow
pdm+01, frb+08
J1750−3703B 0.33 6.07454 +1.92(4) 234.391(9) 3.60511 2.8659 0.00404 0.19 frb+08
J1750−3703C 0.11 26.5687 −99.6(3) 230.67(2) i i i i frb+08
J1750−3703D 0.05 5.13994 +49.28(2) 230.09(17) i i i i frb+08
NGC 6517
rc = 0.06 rh = 0.62 rt = 4.10 l = 19.23 b = 6.76 D = 10.8



J1801−0857A 0.022 7.17561 −51.310(4) 182.56(1) i i i i lrfs11
J1801−0857B 0.022 28.96159 +219.10(5) 182.39(6) 59.83645 33.87545 0.038 0.38 long orbit lrfs11
J1801−0857C 0.057 3.73870 −6.5(2) 182.26(3) i i i i lrfs11
J1801−0857D 1.202 4.22653 +0.69(6) 174.71(9) i i i i lrfs11
NGC 6522
rc = 0.05 rh = 1.04 rt = 16.44 l = 1.02 b = −3.93 D = 7.8



J1803−30A * 7.101 * 192 i i i i pdm+01
J1803−3002B * 4.397 * 192.6 i i i i (g)
J1803−3002C * 5.840 * 194.5 i i i i (g)
NGC 6539
rc = 0.54 rh = 1.67 rt = 21.46 l = 20.80 b = 6.78 D = 8.4



B1802−07 0.25 23.1009 +47.0(4) 186.38(1) 2.61676 3.92059(5) 0.21206(2) 0.35 (ix) mildly eccentric dbl+93,tamt93
NGC 6544
rc = 0.05 rh = 1.77 rt = 2.05 l = 5.84 b = −2.20 D = 2.7



J1807−2459A 0.07 3.05945 −0.4335(3) 134.0040(6) 0.071091 0.01222 0.0 0.010 low-mass dlm+01,rgh+01, lfrj12
J1807−2500B 0.20 4.18618 8.23245(18) 137.1535(20) 9.95667 28.9204 0.74703 1.47 (x) eccentric, massive lfrj12
NGC 6624
rc = 0.06 rh = 0.82 rt = 20.55 l = 2.79 b = −7.91 D = 7.9



B1820−30A 0.05 5.44000 +338.5(1) 86.880(6) i i i i young MSP bbl+94, kbmo05, kni07, faa+11
B1820−30B 0.23 378.596 +0.0315(3)*10−15 87.0(1) i i i i slow bbl+94, lfrj12
J1823−3021C * 405.934 +0.2240(25)*10−15 86.88(24) i i i i slow, young lfrj12
J1823−3021D * 3.02006 * 86.8(1.1) i i i i lfrj12
J1823−3021E * 4.394 * 91.4 i i i i lfrj12
J1823−3021F * 4.850 * 86.7 * * * * eclipsing lfrj12
M28 (NGC 6626)
rc = 0.24 rh = 1.56 rt = 11.27 l = 7.80 b = −5.58 D = 5.6



B1821−24A 0.203 3.05431 +155(7) 120 i i i i young MSP lbm+87, fbtg88, cb04, rfk+04, bbs+11
J1824−2452B * 6.547 * 119.5 i i i i (g), bbs+11
J1824−2452C * 4.159 * 120.7 8.078 7.356 0.847 0.30 eccentric (g), bbs+11
J1824−2452D * 79.832 * 119.5 30.404 24.877 0.776 0.45 young, eccentric (g), bbs+11
J1824−2452E * 5.420 * 119.8 i i i i (g), bbs+11
J1824−2452F * 2.451 * 123.8 i i i i (g), bbs+11
J1824−2452G * 5.909 * 119.4 0.1046 0.0165 0.0 0.011 low-mass (g), bbs+11
J1824−2452H * 4.629 * 121.5 0.435 0.7195 0.0 0.20 eclipsing (g), bbs+11, pdf+10
J1824−2452I * 3.93185 * 119.0 0.45941 0.7658 0.0 0.20 eclipsing (g), bbs+11
J1824−2452J * 4.039 * 119.2 0.0974 0.0250 0.0 0.015 low-mass (g), bbs+11
J1824−2452K * 4.46105 * 119.8 3.91034 2.6050 0.001524(4) 0.16 (g), bbs+11
J1824−2452L * 4.10011 * 119.0 0.22571 0.0570 0.0 0.022 low-mass (g), bbs+11
M22 (NGC 6656)
rc = 0.77 rh = 1.10 rt = 5.21 l = 9.89 b = −7.55 D = 3.2



J1836−2354A 0.68 3.35434 +0.2318(3) 89.107(2) 0.20283 0.0464 0.0 0.020 low-mass lrfs11
J1836−2354B 0.21 3.23227 −0.048(6) 93.3(2) i i i i lrfs11
NGC 6749
rc = 0.77 rh = 1.10 rt = 5.21 l = 36.20 b = −2.20 D = 7.9



J1905+0154A 0.51(38) 3.193 * 193.692(8) 0.81255 0.58862(4) 0.0 0.090 hrs+07
J1905+0154B * 4.968 * 192 * * * * needs confirmation hrs+07
NGC 6752
rc = 0.17 rh = 2.34 rt = 55.34 l = 336.49 b = −25.63 D = 4.0



J1911−5958A 6.39 3.26619 +0.307(10) 33.68(1) 0.83711 1.206045(2) < 0.00001 0.22(xi) dlm+01,dpf+02,bvkh03,fpsd03,bkkv06,cfpd06
J1910−5959B 0.10 8.35780 −79.9(5) 33.28(4) i i i i dpf+02
J1911−6000C 2.70 5.27733 +0.22(7) 33.21(4) i i i i dpf+02
J1910−5959D 0.19 9.03529 +96.3(3) 33.32(5) i i i i dpf+02
J1910−5959E 0.13 4.57177 −43.7(1) 33.29(5) i i i i dpf+02
NGC 6760
rc = 0.33 rh = 2.18 rt = 12.96 l = 36.11 b = −3.92 D = 7.4



J1911+0102A 0.42 3.61852 −0.658 202.678(3) 0.140996 0.037658(2) <0.00013 0.020 low-mass dma+93,fhn+05
J1911+0101B 0.12 5.38432 −0.2 196.69(2) i i i i fhn+05
M71 (NGC 6838)
rc = 0.63 rh = 1.65 rt = 8.96 l = 56.74 b = −4.56 D = 4.0



J1953+1846A * 4.888 * 117 0.1766 0.0782 0.0 0.032 low-mass, eclipsing hrs+07
M15 (NGC 7078)
rc = 0.07 rh = 1.06 rt = 21.50 l = 65.01 b = −27.31 D = 10.3



B2127+11A 0.018 110.665 −2107(3) 67.31(5) i i i i slow wkm+89, and92,jcj+06
B2127+11B 0.079 56.1330 +956(6) 67.69(12) i i i i agk+91,and92,jcj+06
B2127+11C 0.944 30.5293 +499.1(2.5) 67.13(5) 0.33528 2.5183(12) 0.681386(16) 1.13(xii) double neutron star,
eccentric
agk+91,and92,jcj+06
B2127+11D 0.019 4.80280 −107.5(1.2) 67.28(21) i i i i and92
B2127+11E 0.135 4.65144 +17.8(7) 66.51(12) i i i i and92
B2127+11F 0.279 4.02704 +3.2(8) 65.52(15) i i i i and92
B2127+11G 0.106 37.6602 +195(45) 66.43(24) i i i i and92
B2127+11H 0.038 6.74339 +2.4(1.3) 67.15(12) i i i i and92
M30 (NGC 7099)
rc = 0.06 rh = 1.15 rt = 18.34 l = 27.18 b = −46.83 D = 8.0



J2140−2310A 0.067 11.0193 −5.181(20) 25.0640(41) 0.17399 0.2349416(48) < 0.00012 0.11 eclipsing rsb+04
J2140−2310B * 13.0 * 25.09(0.12) > 0.8 > 0.1 > 0.52 > 0.02 eccentric rsb+04