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pulsar Definition

pul·sar (pul′sär′, -sər)

noun

any of several celestial objects, thought to be rotating neutron stars, which emit electromagnetic radiation, esp. radio waves, at short and very regular intervals: abbrev. PSR

Etymology: puls(e) + -ar

pulsar Usage Examples

Converse of object

  • discover: The MECS BeppoSAX mosaic image of four of the newly discovered pulsars in the SMC.
  • observe: The Italian pulsar group is looking forward to use this facility to observe radio pulsars.
  • detect: The survey using this fast, highly sensitive, system at Parkes is detecting one new pulsar for each hour of observation.
  • know: Over three quarters of the more than 1000 pulsars now known have been discovered by Jodrell Bank astronomers.
  • rotate: In the same time, the slower rotating pulsar spins only 22 times or every 2.8 seconds.
  • find: The Parkes survey has found 30 radio pulsars with ages less than 100,000 years.

Adjective modifier

  • binary: We will have more to say about this binary pulsar later in the course.
  • double: The discovery of the double pulsar was hailed by Science magazine as one of the Top 10 scientific advances of 2004.
  • young: In this diagram, young, high magnetic field radio pulsars are located in the upper part.
  • new: At the start of each new pulsar a header will be printed.
  • first: At the heart of the cluster is the first millisecond pulsar to be discovered, its neutron star rotating once every 11 milliseconds.

Modifies a noun

  • astronomy: There are several main active areas of research in the general area of pulsar astronomy which would support projects.
  • observation: We in Jodrell Bank have submitted a proposal to PPARC to construct and built an SKA prototype array for pulsar timing observations.
  • signal: PulSAR signal data files have a consistent naming convention to aid identification.
  • parameter: The pulsar parameters with their check boxes set will be fit for.
  • wind: We have also pioneered numerical simulations of neutron star magnetospheres that helped to understand how pulsar winds are launched by neutron stars.
  • period: These place a step in your data equal to the pulsar period.

Noun used with modifier

  • millisecond: At the heart of the cluster is the first millisecond pulsar to be discovered, its neutron star rotating once every 11 milliseconds.
  • X-ray: The binary X-ray pulsar Cen X-3 was observed over an orbital eclipse, and time variation of the iron line structure was studied.
  • radio: The Parkes survey has found 30 radio pulsars with ages less than 100,000 years.