PSR J2144-3933

Starbox begin
name=PSR J2144-3933Starbox observe
epoch=J2000
ra=21h 44m 12.10s
dec=-39° 33' 55.2"'
appmag_v=
constell=Microscopium Starbox character
class=Pulsar
b-v=?
u-b=?
variable=None Starbox astrometry
radial_v=
prop_mo_ra=
prop_mo_dec=
parallax=
p_error=
absmag_v=
- style="vertical-align: top;"
Distance
587.088 Ly (180 parsecs)Starbox detail
mass=?
radius=?
luminosity=?
temperature=?
metal=?
rotation=8.51 s
age=? Starbox catalog
names=

PSR J2144-3933 is a pulsar about 180 parsecs (5.5 Em) 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 s, which is the longest of any known radio pulsar (the previous longest was that of PSR J1951+1123 at 5.09 s).

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 3×10³¹ watts.

Writing in "Nature", astrophysicists M. D. Young 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" —from "Nature" 400, 848–849 (26 August 1999); doi:10.1038/23650)

References

* http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=PSR+J2144-3933&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id