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- Black_Widow_Pulsar abstract "The Black Widow Pulsar (B1957+20) is an eclipsing binary millisecond pulsar that orbits with a brown dwarf companion with a period of 9.2 hours with an eclipse duration of approximately 20 minutes. When it was discovered in 1988 it was the first eclipsing binary pulsar known. The prevailing theoretical explanation for the system implied that the companion is being destroyed by the gravitational environment (Roche lobe overflow) caused by the neutron star, and so the sobriquet black widow was applied to the object. Subsequent to this, other objects with similar features have been discovered, and the name has been applied to the class of millisecond pulsars with an ablating companion.Later observations of the object showed a bow shock in H-alpha and a smaller-in-extent shock seen in X-rays (as observed by the Chandra Space Telescope), indicating a forward velocity of approximately a million kilometers per hour.In 2010 it was estimated that the neutron star’s mass was at least , and possibly as high as (the latter of which, if true, would surpass PSR J1614–2230 for the title of most massive neutron star yet detected, and place it within range of the Tolman–Oppenheimer–Volkoff limit).".
- Black_Widow_Pulsar thumbnail B1957_comp.jpg?width=300.
- Black_Widow_Pulsar wikiPageID "28059841".
- Black_Widow_Pulsar wikiPageRevisionID "592003721".
- Black_Widow_Pulsar appmagV "20.4".
- Black_Widow_Pulsar bV "0".
- Black_Widow_Pulsar constell Sagitta.
- Black_Widow_Pulsar dec "+20° 48' 15.12"".
- Black_Widow_Pulsar epoch "J2000".
- Black_Widow_Pulsar hasPhotoCollection Black_Widow_Pulsar.
- Black_Widow_Pulsar ra "71976.77".
- Black_Widow_Pulsar rotation "1.667 ms".
- Black_Widow_Pulsar subject Category:Eclipsing_binaries.
- Black_Widow_Pulsar subject Category:Millisecond_pulsars.
- Black_Widow_Pulsar subject Category:Objects_named_with_variable_star_designations.
- Black_Widow_Pulsar subject Category:Sagitta_(constellation).
- Black_Widow_Pulsar subject Category:X-ray_binaries.
- Black_Widow_Pulsar type BinaryStar109221070.
- Black_Widow_Pulsar type CelestialBody109239740.
- Black_Widow_Pulsar type EclipsingBinaries.
- Black_Widow_Pulsar type MillisecondPulsars.
- Black_Widow_Pulsar type NaturalObject100019128.
- Black_Widow_Pulsar type NeutronStar109369692.
- Black_Widow_Pulsar type Object100002684.
- Black_Widow_Pulsar type PhysicalEntity100001930.
- Black_Widow_Pulsar type Pulsar109400987.
- Black_Widow_Pulsar type Star109444100.
- Black_Widow_Pulsar type Whole100003553.
- Black_Widow_Pulsar type X-rayBinaries.
- Black_Widow_Pulsar type CelestialBody.
- Black_Widow_Pulsar type Star.
- Black_Widow_Pulsar type PhysicalBody.
- Black_Widow_Pulsar comment "The Black Widow Pulsar (B1957+20) is an eclipsing binary millisecond pulsar that orbits with a brown dwarf companion with a period of 9.2 hours with an eclipse duration of approximately 20 minutes. When it was discovered in 1988 it was the first eclipsing binary pulsar known.".
- Black_Widow_Pulsar label "Black Widow Pulsar".
- Black_Widow_Pulsar label "Schwarze Witwe (Astronomie)".
- Black_Widow_Pulsar label "ブラックウィドウパルサー".
- Black_Widow_Pulsar sameAs Schwarze_Witwe_(Astronomie).
- Black_Widow_Pulsar sameAs ブラックウィドウパルサー.
- Black_Widow_Pulsar sameAs m.0cmbkgp.
- Black_Widow_Pulsar sameAs Q2253763.
- Black_Widow_Pulsar sameAs Q2253763.
- Black_Widow_Pulsar sameAs Black_Widow_Pulsar.
- Black_Widow_Pulsar wasDerivedFrom Black_Widow_Pulsar?oldid=592003721.
- Black_Widow_Pulsar depiction B1957_comp.jpg.
- Black_Widow_Pulsar isPrimaryTopicOf Black_Widow_Pulsar.
- Black_Widow_Pulsar name "Black Widow Pulsar".