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Trazar las fusiones de agujeros negros a través de la morfología del lóbulo radioeléctrico
1Department of Physics and Astronomy, Rutgers University, New Brunswick, NJ, 08903, USA. merritt@physics.rutgers.edu
Science (New York, N.Y.)
|August 3, 2002
Resumen
Las fusiones galácticas pueden crear agujeros negros supermasivos binarios. Incluso pequeñas fusiones alteran dramáticamente la orientación del giro del agujero negro, causando jet flips y permitiendo la detección por interferómetros de ondas gravitacionales.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- Cosmología Cosmología.
- Astronomía de las ondas gravitacionales Astronomía de las ondas gravitacionales
Sus antecedentes:
- Los agujeros negros supermasivos binarios se forman a partir de fusiones galácticas.
- Se espera que estos sistemas eventualmente se fusionen, emitiendo ondas gravitacionales.
- La dinámica del giro del agujero negro durante las fusiones no se entiende completamente.
Objetivo del estudio:
- Para investigar el impacto de las fusiones galácticas en la orientación de la rotación del agujero negro supermasivo.
- Para identificar las firmas observacionales de estos cambios de espín.
- Para estimar la tasa de eventos de fusión de agujeros negros detectables.
Principales métodos:
- Simulaciones de fusiones galácticas menores que involucran agujeros negros supermasivos.
- Análisis de la morfología de la fuente de radio, identificando específicamente las radiogalaxias aladas o de tipo X.
- Comparación de las tasas de fusión inferidas con las tasas de fusión de galaxias observadas.
Principales resultados:
- Las fusiones galácticas menores pueden causar cambios dramáticos en la orientación del eje de giro de un agujero negro.
- Esta reorientación del espín conduce a cambios repentinos en la dirección de los chorros relativistas asociados.
- Las fuentes de radio aladas o de tipo X se identifican como galaxias donde se han producido estos giros.
Conclusiones:
- El estudio proporciona evidencia observacional de la reorientación del espín en la fusión de agujeros negros supermasivos.
- La tasa inferida de coalescencia de agujeros negros es comparable a la tasa de fusión de galaxias.
- Los interferómetros de ondas gravitacionales podrían potencialmente detectar aproximadamente un evento de fusión de este tipo al año.
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