About: PSR J2144−3933

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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.

Attributes	Values
rdf:type	Thing place dbo:Location schema:Place celestial body star
rdfs:label	PSR J2144-3933 (ca) PSR J2144−3933 (en)
rdfs:comment	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)
foaf:name	PSR J2144−3933 (en)
dct:subject	Rotation-powered pulsars Grus (constellation)
Wikipage page ID	1302372 (xsd:integer)
Wikipage revision ID	1110481510 (xsd:integer)
Link from a Wikipage to another Wikipage	dbr:M._D._Young dbr:Mean_pulse_profile dbr:Spindown_luminosity Hubble Space Telescope Second Nature (journal) Equation of state Rotation-powered pulsars Pulsar Dark matter Watt Grus (constellation) Parsec Grus (constellation) Neutron star Radio pulsar
Link from a Wikipage to an external page	https://www.sciencedaily.com/releases/1999/08/990825183711.htm%7Ctitle=%22Undead%22 http://astrobites.org/2011/03/25/a-pulsar-alone/%7Ctitle=A http://simbad.u-strasbg.fr/simbad/sim-id%3Fprotocol=html&Ident=PSR+J2144-3933&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id
sameAs	PSR J2144−3933 PSR J2144−3933 PSR J2144−3933 PSR J2144−3933
dbp:wikiPageUsesTemplate	dbt:Cite_web dbt:Reflist dbt:Short_description dbt:Starbox_astrometry dbt:Starbox_begin dbt:Starbox_catalog dbt:Starbox_character dbt:Starbox_detail dbt:Starbox_end dbt:Starbox_observe dbt:Starbox_reference dbt:Var-star-stub dbt:DEC dbt:RA dbt:Neutron_star dbt:Grus_(constellation)
dist ly	approx. 587 (en)
class	Pulsar (en)
constell	Grus (constellation)
dist pc	approx. 180 (en)
epoch	J2000 (en)
rotation	8.51 (second)
variable	None (en)
has abstract	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)
prov:wasDerivedFrom	wikipedia-en:PSR_J2144−3933?oldid=1110481510&ns=0
page length (characters) of wiki page	5006 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:PSR_J2144−3933
is Link from a Wikipage to another Wikipage of	Pulsar PSR J2144-3933
is Wikipage redirect of	PSR J2144-3933
is foaf:primaryTopic of	wikipedia-en:PSR_J2144−3933

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