PulsarData

PulsarData["name","property"]
gives the value of the specified property for the pulsar .

PulsarData[{"name1","name2",},"property"]
gives a list of property values for the specified pulsar names.

PulsarData["name","property",annotation]
gives the specified annotation associated with the property.

DetailsDetails

  • The specified in PulsarData can be an Entity, EntityClass, or canonical name.
  • The specified should be an EntityProperty, EntityPropertyClass, canonical name, or list thereof.
  • PulsarData[] gives a list of all pulsar entities.
  • PulsarData["Properties"] gives a list of available properties.
  • Properties that do not apply or are not known in a particular case are indicated by Missing[].
  • Properties include:
  • "AlphanumericName"alphanumeric name
    "AlternateNames"alternate names
    "AltitudeMaximum"next maximum altitude
    "AltitudeTransit"next transit altitude
    "ApparentAltitude"apparent altitude
    "AzimuthRise"azimuth at rise
    "AzimuthSet"azimuth at set
    "BarycentricPeriodDerivative"rotation period derivative
    "BarycentricRotationFrequency"barycentric rotation frequency
    "BarycentricRotationFrequencyDerivative"barycentric rotation frequency derivative
    "BarycentricRotationFrequencyDerivative2"barycentric rotation frequency second derivative
    "BinaryPeriod"binary period
    "BooleanRise"above the horizon
    "CelestialAltitude"altitude
    "CelestialAzimuth"azimuth
    "Classes"classes
    "Constellation"constellation
    "CorrectedPeriodDerivative"corrected period derivative
    "Declination"declination
    "DiscoveryYear"discovery year
    "DispersionMeasure"dispersion measure
    "DispersionMeasureDerivative"dispersion measure derivative
    "DistanceFromEarth"distance from Earth
    "DistanceFromSun"distance from Sun
    "DMSinb"dispersion measure times sin(b)
    "Eccentricity"orbital eccentricity
    "EccentricityTimesCosPeriastronLongitude"eccentricity times cos(periastron longitude)
    "EccentricityTimesSinPeriastronLongitude"eccentricity times sin(periastron longitude)
    "EnergyFluxAtSun"energy flux measured at Earth
    "EquatorialAngularVelocity"equatorial angular velocity
    "EquatorialFrequency"equatorial frequency
    "GalacticLatitude"galactic latitude
    "GalacticLongitude"galactic longitude
    "GlitchCount"glitch count
    "HeliocentricLatitude"heliocentric latitude
    "HeliocentricLongitude"heliocentric longitude
    "HelioCoordinates"heliocentric XYZ coordinates
    "MagneticFieldAtLightCylinder"magnetic field at light cylinder
    "MaximalAltitudeTime"next maximum altitude time
    "MaximumApparentMagnitude"maximum apparent magnitude
    "MeanFluxDensityFourHundredMHz"mean flux density at 400 MHz
    "MeanFluxDensityFourteenHundredMHz"mean flux density at 1400 MHz
    "MeasuredSpectralIndex"measured spectral index
    "MedianCompanionMass"median companion mass
    "MinimumApparentMagnitude"minimum apparent magnitude
    "MinimumCompanionMass"minimum companion mass
    "Name"name
    "Parallax"parallax
    "PeriastronLongitude"periastron longitude
    "ProjectedSemimajorAxisLightSeconds"projected semimajor axis
    "ProperMotion"proper motion
    "ProperMotionDeclination"proper motion declination
    "ProperMotionRightAscension"proper motion right ascension
    "PulsarType"pulsar type
    "PulseWidthFiftyPercentPeak"pulse width at 50% peak
    "PulseWidthTenPercentPeak"pulse width at 10% peak
    "RadioLuminosityFourHundredMHz"radio luminosity 400 MHz
    "RadioLuminosityFourteenHundredMHz"radio luminosity 1400 MHz
    "RightAscension"right ascension
    "RiseTime"next rise
    "RotationMeasure"rotation measure
    "RotationPeriod"rotation period
    "SetTime"next set
    "SpinDownAge"spin down age
    "SpinDownAgeFromCorrectedPeriodDerivative"spin down age corrected for proper motion
    "SpinDownEnergyLossRate"spin down energy loss rate
    "SunElongation"elongation from the Sun
    "SurfaceMagneticDipoleFromCorrectedPeriodDerivative"surface magnetic flux density corrected for proper motion
    "SurfaceMagneticFluxDensity"surface magnetic flux density
    "Surveys"surveys
    "TemporalBroadening"temporal broadening
    "TransitTime"next transit time
    "TransverseVelocity"transverse velocity
    "VariableStarName"variable star name
    "VariableStarType"variable star type
  • Some properties are available for PulsarData as a whole and can be given using the form PulsarData["property"]. Such properties include:
  • "Entities"all available entities
    "EntityCount"total number of available entities
    "Classes"all available entity classes
    "EntityClassCount"total number of available entity classes
    "SampleEntities"list of sample entities
    "SampleEntityClasses"list of sample entity classes
    "EntityCanonicalNames"list of all entity canonical names
    "PropertyCanonicalNames"list of all property canonical names
    "EntityClassCanonicalNames"list of all entity class canonical names
    "RandomEntities"pseudorandom sample entities
    {"RandomEntities",n}n pseudorandom entities
    "RandomEntityClasses"pseudorandom sample entity classes
    {"RandomEntityClasses",n}n pseudorandom entity classes
  • The following annotations can be used in the third argument of PulsarData["name","property",annotation]:
  • "Qualifiers"the list of possible qualifiers for the property
    "QualifierValues"the list of possible values that can be given to each qualifier
    "DefaultQualifierValues"the list of default values for the property's qualifiers
    "Description"a brief textual description of the property
    "Definition"a detailed textual definition of the property
    "Source"source information for the property
    "Date"the date associated with the entity-property value (if any)
    "PhysicalQuantity"the physical quantity associated with the entity-property value
    "Unit"the unit associated with the entity-property value
    "EntityAssociation"an Association of entities and entity-property values
    "PropertyAssociation"an Association of properties and entity-property values
  • If a function is provided as an annotation, it will be used to aggregate the result data. Typical aggregation functions include:
  • Minthe minimum value
    Maxthe maximum value
    Meanthe mean value
    Commonestthe most frequently occurring value
    Medianthe median value
    Totalreturn the total
    Lengththe number of elements

ExamplesExamplesopen allclose all

Basic Examples  (4)Basic Examples  (4)

Use Ctrl+Equal for discovery:

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Determine the distance to a pulsar:

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Find the equatorial coordinates of a pulsar:

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Find the current sky position of a pulsar from your location:

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Introduced in 2014
(10.0)