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gptkbp:instanceOf
|
white dwarf
pulsar
|
|
gptkbp:age
|
about 970 years
|
|
gptkbp:associatedSupernova
|
gptkb:SN_1054
|
|
gptkbp:catalogue
|
gptkb:ATNF_Pulsar_Catalogue
gptkb:SIMBAD
|
|
gptkbp:catalogueNumber
|
gptkb:PSR_B0531+21
gptkb:PSR_J0534+2200
|
|
gptkbp:constellation
|
gptkb:Taurus
|
|
gptkbp:declination
|
+22° 00′ 52.1″
|
|
gptkbp:diameter
|
about 28 km
|
|
gptkbp:discoveredBy
|
gptkb:Jocelyn_Bell_Burnell
|
|
gptkbp:discoveredIn
|
1968
|
|
gptkbp:distanceFromEarth
|
6500 light-years
|
|
gptkbp:emits
|
gptkb:X-rays
gptkb:gamma_rays
gptkb:radio_waves
optical light
|
|
gptkbp:firstGammaRayPulsarDiscovered
|
yes
|
|
gptkbp:firstOpticalPulsarDiscovered
|
yes
|
|
gptkbp:firstXrayPulsarDiscovered
|
yes
|
|
gptkbp:glitchesObserved
|
yes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Crab Pulsar
|
|
gptkbp:locatedIn
|
gptkb:Crab_Nebula
|
|
gptkbp:magneticFieldStrength
|
3.8×10^12 Gauss
|
|
gptkbp:mass
|
1.4 solar masses
|
|
gptkbp:notableFor
|
emits pulses across the electromagnetic spectrum
first pulsar associated with a supernova remnant
used as a standard candle in X-ray astronomy
|
|
gptkbp:parentSupernovaRemnant
|
gptkb:Crab_Nebula
|
|
gptkbp:powerSource
|
rotational energy
|
|
gptkbp:pulsarWindNebula
|
gptkb:Crab_Nebula
|
|
gptkbp:pulsePeriodChange
|
increasing
|
|
gptkbp:pulseProfile
|
double-peaked
|
|
gptkbp:rightAscension
|
05h 34m 31.97s
|
|
gptkbp:rotationAxisInclination
|
about 60 degrees
|
|
gptkbp:rotationPeriod
|
33 milliseconds
about 30 Hz
|
|
gptkbp:spinDownRate
|
about 38 nanoseconds per day
|
|
gptkbp:temperature
|
~1.6 million K
|
|
gptkbp:timingNoise
|
significant
|
|
gptkbp:usedFor
|
testing general relativity
calibrating X-ray telescopes
studying high-energy astrophysics
studying neutron star physics
studying pulsar wind nebulae
studying supernova remnants
|
|
gptkbp:bfsParent
|
gptkb:white_dwarf
|
|
gptkbp:bfsLayer
|
5
|