| / English Dictionary |
PULSAR
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
A degenerate neutron star; small and extremely dense; rotates very fast and emits regular pulses of polarized radiation
Classified under:
Nouns denoting natural objects (not man-made)
Hypernyms ("pulsar" is a kind of...):
neutron star (a star that has collapsed under its own gravity; it is composed of neutrons)
Context examples:
To explore this uncharted area of gravitational wave science, researchers look to a natural experiment in the sky called a pulsar timing array.
(Listening for Gravitational Waves Using Pulsars, NASA)
Geminga was finally identified in March 1991, when flickering X-rays picked up by Germany’s ROSAT mission revealed the source to be a pulsar spinning 4.2 times a second.
(NASA’s Fermi Mission Links Nearby Pulsar’s Gamma-ray ‘Halo’ to Antimatter Puzzle, NASA)
While pulsars are often behind these gamma rays in our galaxy, other sources can be as well, including the outer shells of the supernova remnants, X-ray binary stars and star-formation regions.
(Pulse of a Dead Star Powers Intense Gamma Rays, NASA)
There's a new record holder for brightest pulsar ever found — and astronomers are still trying to figure out how it can shine so brightly.
(NuSTAR Helps Find Universe's Brightest Pulsars, NASA)
These distortions actually shift the position of Earth and the pulsars ever so slightly, resulting in a characteristic and detectable signal from the array of celestial lighthouses.
(Listening for Gravitational Waves Using Pulsars, NASA)
A pulsar naturally surrounds itself with a cloud of electrons and positrons.
(NASA’s Fermi Mission Links Nearby Pulsar’s Gamma-ray ‘Halo’ to Antimatter Puzzle, NASA)
While data from Chandra and the European Space Agency's XMM-Newton telescopes hinted that the power source was a pulsar, intervening clouds of gas blocked the view, making it difficult to see.
(Pulse of a Dead Star Powers Intense Gamma Rays, NASA)
It's now part of a small group of mysterious bright pulsars that are challenging astronomers to rethink how pulsars accumulate, or accrete, material.
(NuSTAR Helps Find Universe's Brightest Pulsars, NASA)
Because their rapid pulse of radio emission is so predictable, a large array of well-understood pulsars can be used to measure extremely subtle abnormalities, such as gravitational waves.
(Listening for Gravitational Waves Using Pulsars, NASA)
Nearby pulsars like Geminga were prime suspects.
(NASA’s Fermi Mission Links Nearby Pulsar’s Gamma-ray ‘Halo’ to Antimatter Puzzle, NASA)
YOU MAY ALSO LIKE
