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PULSAR: Help

PULSAR - Pulsar Catalog


Overview

This database is based on the 1995 May 3 electronic version of the Taylor et al. Pulsar Catalog and contains data on 706 pulsars, i.e., it contains 25% more entries than the version published by Taylor et al. in 1993 ApJS. The HEASARC obtained this electronic version from the Princeton University FTP site.

Catalog Bibcode

1993ApJS...88..529T

References

A printed version of the original catalog appeared in J. H. Taylor, R. N. Manchester, and A. G. Lyne 1993, ApJS. 88, 529. This updated version of the catalog should be referred to as J.H. Taylor, R.N. Manchester, A.G. Lyne, and F. Camilo, 1995, unpublished. A full list of the references used in the compilation of this database can be obtained as a gzipped postscript file pulsar.refs.ps.gz from the directory heasarc/dbase/misc_files in the anonymous FTP area of legacy.gsfc.nasa.gov.

PSR J1300+1240

PSR J1300+1240 = PSR B1257+12's has two binary orbits associated with it. The parameters of the first binary orbit are listed in the database; those of the second binary orbit are given below:
PERIOD_BIN= 98.2230
PERIOD_BIN_ERROR= 2.000E-03
A1= 1.4121E-03
A1_ERROR= 6.0000000000000E-07
OMEGA=  106.000
OMEGA_ERROR=  2.000
OMEGA_DOT= 0.00
OMEGA_DOT_ERROR= 0.00
ECCENTRICITY= 2.640E-02
ECCENTRICITY_ERROR= 9.000E-04
T0=  48783.90
T0_ERROR= 0.600
GAMMA= 0.0000000000000E+00
GAMMA_ERROR= 0.0000000000000E+00
PERIOD_BIN_DOT= 0.0000000000000E+00
PERIOD_BIN_DOT_ERROR= 0.0000000000000E+00
SIN_I= 0.0000000000000E+00
SIN_I_ERROR= 0.0000000000000E+00
RANGE= 0.0000000000000E+00
RANGE_ERROR= 0.0000000000000E+00

Parameters

Name
Name of the pulsar using the standard IAU method, based on J2000 coordinates.

Bname
Name of the pulsar using the standard IAU method, based on B1950 coordinates.

RA
The right ascension of the pulsar.

Dec
The declination of the pulsar.

LII
The galactic longitude of the pulsar.

BII
The galactic latitude of the pulsar.

RA_Error
Uncertainty in the RA in arcseconds.

Dec_Error
Uncertainty in the declination in arcseconds.

Min_Distance
Lower limit to the distance (from method other than dispersion) in kpc.

Max_Distance
Upper limit to the distance (from method other than dispersion) in kpc.

Distance
Adopted distance in kpc.

Z
Distance above or below the Galactic plane, z = distance * sin (bii)

Distance_Flag
A flag that describes whether the quoted distance is a measured value (value=0), a lower limit (1), or an upper limit(2).

Lower_Code
An estimate of the reliability of the distance on the lower side, where a means best, b means good, c means fair, and d means poor.

Upper_Code
An estimate of the reliability of the distance on the upper side, where a means best, b means good, c means fair, and d means poor.

Prop_RA
Proper motion in RA in milliarcseconds per year (mas/yr).

Prop_RA_Error
Uncertainty in proper motion in RA (mas/yr).

Prop_Dec
Proper motion in declination in milliarcseconds per year (mas/yr).

Prop_Dec_Error
Uncertainty in proper motion in declination (mas/yr).

Position_Epoch
Epoch of position measurement in MJD.

Period
Pulsar barycentric period in seconds.

Period_Error
Uncertainty in pulsar barycentric period.

Period_Dot
Derivative of the barycentric period in units of seconds per second (s/s).

Period_Dot_Error
Uncertainty in the Derivative of the barycentric period.

Ref_Epoch
Reference epoch for the timing parameters such as barycentric period in MJD.

Nu_Dotdot
Second time derivative of barycentric rotation frequency in s^-3.

Nu_Dotdot_Error
Uncertainty in second time derivative of barycentric rotation frequency.

Log_Tau_S
Log of the scattering time constant at 400 MHz in seconds.

Log_Tau_S_Flag
Flag for Log_Tau_S, where 0 means a measured value, 1 means a lower limit, and 2 means an upper limit.

T_408_MHz
Sky background temperature at 408 MHz in K.

DM
Dispersion measure in pc/cm^3.

DM_Error
Uncertainty in dispersion measure.

Rm
Rotation measure in radians/m^2.

Rm_Error
Uncertainty in rotation measure.

Pulse_Width
Equivalent width of the integrated pulse profile (effective pulse width) in ms.

Pulse_Width_50
Pulse profile width at 50% of peak in ms.

Pulse_Width_10
Pulse profile width at 10% of peak in ms.

Flux_400_MHz
Time-averaged flux density at 400 MHz in mJy.

Flux_600_MHz
Time-averaged flux density at 600 MHz in mJy.

Flux_1400_MHz
Time-averaged flux density at 1400 MHz in mJy.

Modcode
ID for distance model: 1 = Taylor & Cordes (1993)

Limcode
Set to 1 if the model distance is a lower limit, 0 otherwise.

Model_Distance
Distance of pulsar calculated from DM and model of Galactic electron density, according to Taylor & Cordes (1993), in kpc.

Log_Lum_Radio
Log of the radio luminosity at 400 MHz in mJy kpc^2.

Log_B_Surf
Log of surface dipole magnetic field strength B in Gauss.

Log_Age
log of characteristic age (0.5*P/Pdot) in years (zero if Pdot is not positive).

Log_E_Dot
Log of total energy loss rate in erg/s.

Ibin
Number of orbits for this pulsar.

Period_Bin
Binary orbital period in days.

Period_Bin_Error
Uncertainty in binary orbital period.

A1
Projected semi-major axis, a sin i, of orbit in seconds.

A1_Error
Uncertainty in projected semi-major axis, a sin i, of orbit.

Omega
Longitude of periastron, omega, of binary orbit in degrees.

Omega_Error
Uncertainty in longitude of periastron, omega, of binary orbit.

Omega_Dot
Rate of advance of binary periastron in degrees/Julian yr.

Omega_Dot_Error
Uncertainty in rate of advance of binary periastron.

Eccentricity
Eccentricity of binary orbit.

Eccentricity_Error
Uncertainty in eccentricity of binary orbit.

T0
Time of periastron passage of binary orbit in MJD.

T0_Error
Uncertainty in time of periastron passage of binary orbit.

Gamma
Post-Keplerian (time-dilation and gravitational-redshift) orbital parameter, gamma, in seconds.

Gamma_Error
Uncertainty in post-Keplerian (time-dilation and gravitational-redshift) gamma parameter.

Period_Bin_Dot
First time-derivative of binary orbital period in units of 10^-12.

Period_Bin_Dot_Error
Uncertainty in first time-derivative of binary orbital period.

Sin_I
Orbital inclination, sin(i).

Sin_I_Error
Uncertainty in Orbital inclination, sin(i).

O_Range
Orbital Shapiro-delay "range" parameter in microseconds.

O_Range_Error
Uncertainty in orbital Shapiro-delay "range" parameter.

Survey_Code
Octal code for radio surveys in which this pulsar has been detected; each survey has a unique code, the listed code being the sum of the codes of all the surveys which detected the pulsar. e.g., a value of 111 = 100 + 10 + 1 means that it was detected in the Molonglo 1 (1), Molonglo 2 (10), and Jodrell Bank 2 (100) surveys. The full key is given below:

         1  =  Molonglo 1 (Vaughan & Large 1970, Nature 225, 167)
         2  =  Jodrell Bank 1 (Davies et al. 1977, MNRAS, 179, 635)
         4  =  Arecibo 1 (Hulse & Taylor 1975, ApJ, 201, L55)
        10  =  Molonglo 2 (Manchester et al. 1978, MNRAS, 185, 409)
        20  =  Green Bank 1 (Damashek et al. 1978, ApJ, 225, L31)
        40  =  Green Bank 2 (Dewey et al. 1985, ApJ, 294, L25)
       100  =  Jodrell Bank 2 (Clifton & Lyne 1986, Nature, 320, 43)
       200  =  Green Bank 3 (Stokes et al. 1986, ApJ, 311, 694)
       400  =  Arecibo 2 (Stokes et al. 1986, ApJ, 311, 694)
      1000  =  Parkes 1 (Johnston et al. 1992, MNRAS, 255, 401)
      2000  =  Arecibo 3 (Nice et al. 1995, ApJ, 449, 156)
      4000  =  Parkes 70 (Manchester et al. 1996, 279, 1235)
     10000  =  Arecibo 4a (Camilo 1995, PhD thesis; Nice 1992, PhD thesis)
     20000  =  Arecibo 4b (Camilo 1995, PhD thesis)
     40000  =  Arecibo 4c (Ray et al. 1996, ApJ, 470, 1103)
    100000  =  Arecibo 4d (Ray et al. 1996, ApJ, 470, 1103)
    200000  =  Arecibo 4e (Foster et al. 1995, in Millisecond Pulsars.., p. 24)
    400000  =  Arecibo 4f (Anderson et al. 1995, in preparation)
  
The code 1000000 = Green Bank 4 (Sayer et al. 1997, ApJ, 474, 426) was never implemented in the current database.

Pulsar_Code
Octal code describing characteristics of this pulsar; each characteristic has a unique code, the listed code being the sum of the codes of all the characteristics of this pulsar. e.g., a value of 21 = 20 + 1 means that it is a millisecond pulsar (20) with an association with a globular cluster (1). The full key is given below:

         1  =  Globular cluster association
         2  =  SNR association
         4  =  Glitches in period
        10  =  Binary or multiple pulsar
        20  =  Millisecond pulsar (P < 25 millisec)
        40  =  Recycled pulsar
       100  =  Radio interpulse
       200  =  Optical, X-ray or Gamma-ray pulsed emission
       400  =  Extragalactic pulsar
  

Class
BROWSE classification type. All objects in this database have been assigned the class of radio pulsar (1800).


Contact Person

Questions regarding the PULSAR database table can be addressed to the HEASARC User Hotline.
If you have any problems, please consult the help page or mail ledas-help@star.le.ac.uk
 
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