PULSAR93 (E0): Princeton/Jodrell Bank/ATNF Pulsar Cat.; May 1993 (19950114)
FILE: pulsar93.e0 (558 pulsars)
CONTENTS: Princeton/Jodrell Bank/ATNF Pulsar Catalog; May 1993
DATASET: This file comes in HyperSky dataset E-10, version 19950114. Availability on HyperSky CD-ROM: Vol. 2 (1995)
DESCRIPTION: This file contains 558 pulsars from the Princeton / Jodrell Bank / ATNF pulsar database, version of May 1993. The ATNF is the Australia National Telescope Facility.
The original database is an up-to-date compilation of the principal observed parameters of 558 pulsars, including positions, timing parameters, pulse widths, flux densities, proper motions, distances, and dispersion, rotation, and scattering measures. It also lists the orbital elements of binary pulsars, and some commonly used parameters derived from the basic measurements. Because the database is regularly updated, the HyperSky datafile is effectively a snapshot of this database, displaying only a relatively small subset of its information.
The HyperSky file is based on a transformation of the Aug 1993 version of the database available through the U.S. National Space Sciences Data Center (NSSDC) as Astronomical Data Center (ADC) catalog #7156. It is also available from the Stellar Data Center (CDS), Strasbourg, France, as catalog VII/156.
DATA:
The HyperSky datafile contains the following data from the database:
POSITION: Right Ascension and Declination are based on the database J2000 position. Database positions in both RA and Dec were provided in decimal degrees to an accuracy of 10 decimal places in the ADC version of the database. Original database positions are in radians.
MAG: No magnitudes or equivalents are provided in the database.
IDENTIFICATION: The J2000 pulsar name, consisting of the letter "J", followed by the right ascension in hours and minutes and the declination in degrees, and in most cases, minutes. In some cases, this positional name may be followed by a letter when more than one pulsar would otherwise have the same identification. This occurs, for example where multiple pulsars are identified in a globular cluster.
COMMENTS: The comment lines following the identification contain the following information, if available, for each pulsar:
* A line containing the B1950 quasar identification, in a form analagous to the J2000 name described above.
* A line starting with "dis=", giving the approximate distance to the quasar in light-years (ly). This value has been converted from the "adopted distance" given in the database in units of kiloparsecs. The database itself also contains values for minimum and maximum likely distances, and confidence levels. Rather than include all this information, the HyperSky file merely displays the adopted distance to an accuracy of 3 significant figures.
* A line starting with "period=", giving the pulsar's barycentric period in seconds to 6 decimal places (1 microsecond accuracy). The original database provides this period to 19 decimal places, as well as providing a period epoch, and period derivatives. Hence the HyperSky value should be considered only approximate.
* A line of the form "flux(400MHz) = NN mJy", giving the pulsar's time averaged flux density at 400MHz in milli-Janskys, where NN is the flux density value. One jansky (originally, flux unit) equals 1E-26 watt per square meter per hertz.
* A line of the form "flux(600MHz) = NN mJy", giving the pulsar's time averaged flux density at 600MHz in milli-Janskys, where NN is the flux density value.
* A line of the form "flux(1400MHz) = NN mJy", giving the pulsar's time averaged flux density at 1400MHz in milli-Janskys, where NN is the flux density value.
* One or more of the following comments, based on an octal type code supplied in the database for each pulsar:
"Globular cluster assoc." (The pulsar is associated with a globular cluster)
"SNR assocation" (The pulsar is associated with a supernova remnant)
"Glitches in period"
"Binary/multiple pulsar"
"Millisecond pulsar"
"Radio interpulse"
"high energy emission" (Pulsed emission in optical, X-ray or Gamma-ray ranges)
"Extragalactic (LMC,SMC)" (The pulsar lies in one of the Magellanic Clouds. Note that this code is apparently missing for some pulsars whose distance suggests that they too are extragalactic.)
REFERENCE
TAYLOR J.H., MANCHESTER R.N., LYNE A.G.: 1993 Astrophys. J. Suppl. 88, 529 (Jodrell Bank Preprint 1070)