J/AZh/74/63 Cluster analysis of pulsar parameters (Malov+, 1997)
Cluster analysis of pulsar parameters
Malov I.F., Malov O.I.
<Astron. Zh. 74, 63 (1997)>
=1997AZh....74...63M 1997AZh....74...63M (SIMBAD/NED BibCode)
=1997ARep...41...56M 1997ARep...41...56M
ADC_Keywords: Pulsars ; Combined data
Description:
The catalogue of pulsars with several calculated data is used by the
cluster analysis for the division of pulsars into groups. Pulsars
with periods P>1s and P<0.1s form two separate classes; the
short-period objects, in turn, divide into two groups. One of these
consist of young pulsars that form in the galactic plane or in
globular clusters, while the other group consist of spun-up pulsars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 100 218 Pulsar catalogue
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq [001-218] Running number
5-13 A9 --- PSR Name of pulsar
15-19 F5.3 s Per Period
21-29 F9.5 fs/s Pdot Period derivative
31-38 F8.4 ms w50 ? Profile width at 50% of peak
40-44 F5.2 [10-7W] logL Log of integrated radio luminosity
48-52 F5.2 [gauss] logB Log of magnetic field in gauss at the surface
54-57 F4.2 [yr] logAge Log of characteristic age in years
59-62 F4.2 kpc |z| Distance from the galactic plane
65-67 F3.1 --- alf2 ? Spectral index of the linear part of
pulsar spectrum
69-72 F4.2 GHz numax ? Frequency of the maximum of the spectrum
74-77 F4.2 GHz nucut ? Frequency of the cutoff in the spectrum
80-83 F4.2 [gauss] logBlc Magnetic field in gauss at the light cylinder
85-88 F4.1 deg beta ? Angle between rotation and magnetic axes
90-94 F5.2 --- C ? Maximum derivative of linear polarization
position angle
96-100 F5.2 --- logeta Log of efficiency of the transformation of
rotation energy into radio emission
(always negative)
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Table 5: Pulsars with P<0.1s
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No. PSR P,s Pdot logL |z|
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p1 B0531+21 0.033 420.96 31.84 0.20
p2 0833-45 0.089 124.68 29.30 0.02
p3 1620-26 0.011 81.56E-5 30.57 0.61
p4 1821-24 0.003 0.00161 30.98 0.38
p5 1855+09 0.005 1.78E-5 28.35 0.02
p6 1937+21 0.002 1.05E-5 31.16 0.03
p7 1951+32 0.040 5.8494 28.76 0.06
p8 J0437-4715 0.006 0.00012 28.38 0.09
p9 B1257+12 0.006 1.21E-4 28.17 0.60
p10 1516+02A 0.006 6E-5 29.04 5.10
p11 1534+12 0.038 0.00243 28.56 0.51
p12 1802-07 0.023 0.00047 28.85 0.37
p13 1830-08 0.085 9.1698 29.89 0.01
p14 1913+16 0.059 8.63E-3 29.82 0.26
p15 1953+29 0.006 2.95E-5 30.20 0.04
p16 1957+20 0.002 1.68E-5 29.08 0.13
p17 J2019+2425 0.004 8.3E-6 28.40 0.10
p18 B2127+11G 0.038 0.0020 28.30 4.59
p19 2127+11H 0.007 2.4E-5 28.65 4.59
p20 2127+11B 0.056 0.00956 29.46 4.59
p21 2127+11E 0.005 1.78E-4 28.65 4.59
p22 2127+11F 0.004 3.2E-5 28.30 4.59
p23 2127+11C 0.031 6.00499 29.30 4.59
p24 J2322+2057 0.005 7E-6 27.41 0.47
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Table 6: The division of pulsars into groups on the basis of cluster analysis
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Cluster P(s) Pdot logL |z| n Pulsar number (tables 1 or 5)
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I 1.545 11.305 27.92 0.54 65 1,3,4,6,7,9,12,13,23,28,30,31,
37,39,40,43,45,51,53,55-57,60,61,
63,68,81-83,94-96,100,106,116,130,
144,146,150,151,158,159,162,163,
165,169,173,174,176-178,187,
196-198,201,202,205-207,211,
214-217
II 0.071 46.566 29.32 0.03 p2,p7,p13
III 0.015 0.00138 29.07 0.28 p1,p3-p6,p8-p12,p14-p24
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(End) Veta Avedisova [INASAN] 12-Dec-1998