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- PSR J2144-3933 és un púlsar a uns 180 parsecs (5,5 Em) de la Terra. S'havia pensat que tenia un període de 2,84 segons però ara se sap que és de 8,51 s, que és el més dilatat de qualsevol altre púlsar conegut (l'anterior més llarg era amb 5,09 s). (ca)
- PSR J2144−3933 is a pulsar about 180 parsecs (587 light-years) from Earth. It is the coldest known neutron star with a surface temperature less than 42000 Kelvin as measured by the Hubble Space Telescope. It was previously thought to have a period of 2.84 seconds but is now known to have a period of 8.51 seconds, which is among the longest-known radio pulsar. J2144−3933 is also notable for other reasons: its is very narrow in comparison to the pulse period with a half-intensity width of less than one degree of longitude. It also has the lowest of any pulsar at about 3×1021 watts. Writing in Nature, astrophysicists and coworkers consider this object and suggest that its existence throws current theories into doubt. They state: Moreover, under the usual model assumptions, based on the neutron-star equations of state, this slowly rotating pulsar should not be emitting a radio beam. Therefore either the model assumptions are wrong, or current theories of radio emission must be revised The fact that J2144−3933 is the coldest observed neutron star has been exploited to constrain the properties of dark matter. (en)
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- PSR J2144-3933 és un púlsar a uns 180 parsecs (5,5 Em) de la Terra. S'havia pensat que tenia un període de 2,84 segons però ara se sap que és de 8,51 s, que és el més dilatat de qualsevol altre púlsar conegut (l'anterior més llarg era amb 5,09 s). (ca)
- PSR J2144−3933 is a pulsar about 180 parsecs (587 light-years) from Earth. It is the coldest known neutron star with a surface temperature less than 42000 Kelvin as measured by the Hubble Space Telescope. It was previously thought to have a period of 2.84 seconds but is now known to have a period of 8.51 seconds, which is among the longest-known radio pulsar. J2144−3933 is also notable for other reasons: its is very narrow in comparison to the pulse period with a half-intensity width of less than one degree of longitude. It also has the lowest of any pulsar at about 3×1021 watts. (en)
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- PSR J2144-3933 (ca)
- PSR J2144−3933 (en)
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