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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      (SIMBAD/NED BibCode)
      =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:
--------------------------------------------------------------------------------
  FileName      Lrecl  Records   Explanations
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
   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  [G]      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  [G]      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)
--------------------------------------------------------------------------------

Table 5: Pulsars with P<0.1s
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    No.   PSR         P,s     Pdot        logL   |z|
-----------------------------------------------------
    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
-----------------------------------------------------

Table 6: The division of pulsars into groups on the basis of cluster analysis
-------------------------------------------------------------------------------
  Cluster P(s)    Pdot     logL   |z|    n   Pulsar number (tables 1 or 5)
-------------------------------------------------------------------------------
  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