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X-ray flares from postmerger millisecond pulsars.
Dai, Z G; Wang, X Y; Wu, X F; Zhang, B.
Afiliación
  • Dai ZG; Department of Astronomy, Nanjing University, Nanjing 210093, China. dzg@nju.edu.cn
Science ; 311(5764): 1127-9, 2006 Feb 24.
Article en En | MEDLINE | ID: mdl-16497927
ABSTRACT
Recent observations support the suggestion that short-duration gamma-ray bursts are produced by compact star mergers. The x-ray flares discovered in two short gamma-ray bursts last much longer than the previously proposed postmerger energy-release time scales. Here, we show that they can be produced by differentially rotating, millisecond pulsars after the mergers of binary neutron stars. The differential rotation leads to windup of interior poloidal magnetic fields and the resulting toroidal fields are strong enough to float up and break through the stellar surface. Magnetic reconnection-driven explosive events then occur, leading to multiple x-ray flares minutes after the original gamma-ray burst.
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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2006 Tipo del documento: Article País de afiliación: China
Buscar en Google
Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2006 Tipo del documento: Article País de afiliación: China
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