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Boquilla de chorro de precesión conectada a un agujero negro giratorio en M87
Yuzhu Cui1,2,3,4, Kazuhiro Hada5,6, Tomohisa Kawashima7
1Research Center for Intelligent Computing Platforms, Zhejiang Laboratory, Hangzhou, China. yuzhu_cui77@163.com.
Nature
|September 27, 2023
Resumen
Los investigadores analizaron 22 años de observaciones por radio de la galaxia M87. Descubrieron un período de 11 años en el jet
Área de la Ciencia:
- La astrofísica
- La radioastronomía
- Física de los agujeros negros
Sus antecedentes:
- La radiogalaxia M87 proporciona un laboratorio único para el estudio de agujeros negros supermasivos y chorros relativistas.
- Las observaciones anteriores indicaron un amplio ángulo de apertura del chorro y un desplazamiento lateral posiblemente vinculado a una cuasi-periodicidad de 8-10 años.
- El Event Horizon Telescope resolvió la fuente de radio central, revelando una estructura de anillo asimétrica.
Objetivo del estudio:
- Para investigar el origen del desplazamiento de chorro lateral observado en M87.
- Para analizar observaciones de radio a largo plazo para identificar variaciones periódicas en la posición del chorro.
- Para entender la dinámica del disco de acreción y la interacción del agujero negro.
Principales métodos:
- Análisis de 22 años de datos de observación por radio de M87.
- Análisis de series temporales para detectar variaciones periódicas en el ángulo de posición del chorro.
- Modelado para inferir los procesos físicos responsables del comportamiento del chorro observado.
Principales resultados:
- Se identificó un período de 11 años en la variación del ángulo de posición del chorro.
- La precesión del chorro observado es consistente con un agujero negro giratorio.
- Los hallazgos sugieren la precesión de Lense-Thirring de un disco de acreción desalineado.
Conclusiones:
- La precesión del chorro de 11 años en M87 es probablemente causada por un agujero negro giratorio y un disco de acreción desalineado.
- La precesión de chorros puede ser un fenómeno común en los núcleos galácticos activos, aunque a menudo es difícil de detectar.
- Este estudio proporciona información significativa sobre la compleja relación entre los agujeros negros, los discos de acreción y los chorros relativistas.
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