This article relies largely or entirely on a single source. (June 2013)
Epoch J2000 Equinox J2000
|Right ascension||21h 44m 12.10s|
|Declination||−39° 33′ 55.2″|
|Distance||approx. 587 ly |
(approx. 180 pc)
PSR J2144−3933 is a pulsar about 180 parsecs (587 light-years) from Earth. 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 notable for other reasons: its mean pulse profile 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 spindown luminosity of any pulsar at about 3×1021 watts.
- 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
- ""Undead" Star Torpedoes Current Theories". Sciencedaily.com. 26 August 1999. Retrieved June 2013. Check date values in:
- Kohler, Susanna (25 March 2011). "A Pulsar Alone: The first deep X-ray and optical observations of the closest isolated radio pulsar". Astrobites.org. Retrieved June 2013. Check date values in:
|This variable star–related article is a stub. You can help Wikipedia by expanding it.|